Compressor Vibration Monitoring & Mechanical Condition Engineering

COMPRESSOR VIBRATION MONITORING & MECHANICAL CONDITION ENGINEERING

Mandatory High-Pressure / Rental Application Engineer + Safety Reviewer review applies. The legacy safeguard prohibits inferring booster flow from maximum pressure or quoting a model without feed-condition and supplier confirmation. That route remains separately preserved.

Provisional new-series slug: /compressed-air-engineering/vibration-monitoring-mechanical-condition/ | Primary CTA: Review My Compressor Vibration Programme

Vibration data is only useful when the measurement point, machine state, speed, load and mechanical failure mechanism are known

It governs how compressor, motor, airend, bearing, coupling, belt, gear, fan and pump vibration evidence is collected and compared without converting generic vibration charts into universal machine limits.

Vibration diagnosis is method- and machine-specific. Overall vibration, spectra, waveform, phase, envelope/demodulation and other specialist techniques can support diagnosis, but exact severity limits, frequency interpretations and acceptance criteria require appropriate equipment data, measurement standards and competent vibration analysis.

1 — Asset Identity

Vibration Programme Foundation: govern asset identity using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

2 — Machine Train

Vibration Programme Foundation: govern machine train using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

3 — Rotating Component Map

Vibration Programme Foundation: govern rotating component map using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

4 — Failure-Mechanism Map

Vibration Programme Foundation: govern failure-mechanism map using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

5 — Criticality

Vibration Programme Foundation: govern criticality using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

6 — Monitoring Objective

Vibration Programme Foundation: govern monitoring objective using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

7 — Measurement Strategy

Vibration Programme Foundation: govern measurement strategy using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

8 — Baseline Reference

Vibration Programme Foundation: govern baseline reference using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

9 — Route-Based Monitoring

Vibration Programme Foundation: govern route-based monitoring using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

10 — Permanent Monitoring

Vibration Programme Foundation: govern permanent monitoring using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

11 — Specialist Survey

Vibration Programme Foundation: govern specialist survey using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

12 — Data Owner

Vibration Programme Foundation: govern data owner using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

13 — Analysis Owner

Vibration Programme Foundation: govern analysis owner using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

14 — Action Owner

Vibration Programme Foundation: govern action owner using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

15 — Revision Control

Vibration Programme Foundation: govern revision control using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

16 — Motor Drive-End Point

Measurement Point Engineering: govern motor drive-end point using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

17 — Motor Non-Drive-End Point

Measurement Point Engineering: govern motor non-drive-end point using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

18 — Airend Drive-End Point

Measurement Point Engineering: govern airend drive-end point using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

19 — Airend Non-Drive-End Point

Measurement Point Engineering: govern airend non-drive-end point using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

20 — Gearbox Point

Measurement Point Engineering: govern gearbox point using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

21 — Fan Bearing Point

Measurement Point Engineering: govern fan bearing point using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

22 — Pump Bearing Point

Measurement Point Engineering: govern pump bearing point using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

23 — Horizontal Direction

Measurement Point Engineering: govern horizontal direction using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

24 — Vertical Direction

Measurement Point Engineering: govern vertical direction using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

25 — Axial Direction

Measurement Point Engineering: govern axial direction using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

26 — Sensor Mounting

Measurement Point Engineering: govern sensor mounting using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

27 — Surface Preparation

Measurement Point Engineering: govern surface preparation using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

28 — Point Marking

Measurement Point Engineering: govern point marking using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

29 — Measurement Repeatability

Measurement Point Engineering: govern measurement repeatability using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

30 — Unsafe/Inaccessible Point

Measurement Point Engineering: govern unsafe/inaccessible point using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

31 — Running Speed

Operating Context: govern running speed using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

32 — Vsd Frequency/Speed

Operating Context: govern VSD frequency/speed using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

33 — Load Percentage

Operating Context: govern load percentage using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

34 — Loaded State

Operating Context: govern loaded state using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

35 — Unloaded State

Operating Context: govern unloaded state using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

36 — System Pressure

Operating Context: govern system pressure using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

37 — Flow Demand

Operating Context: govern flow demand using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

38 — Ambient Temperature

Operating Context: govern ambient temperature using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

39 — Machine Temperature

Operating Context: govern machine temperature using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

40 — Recent Start

Operating Context: govern recent start using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

41 — Steady-State Window

Operating Context: govern steady-state window using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

42 — Valve/Control State

Operating Context: govern valve/control state using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

43 — Maintenance State

Operating Context: govern maintenance state using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

44 — Foundation Condition

Operating Context: govern foundation condition using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

45 — Production Context

Operating Context: govern production context using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

46 — Overall Velocity

Basic Vibration Parameters: govern overall velocity using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

47 — Overall Acceleration

Basic Vibration Parameters: govern overall acceleration using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

48 — Displacement Boundary

Basic Vibration Parameters: govern displacement boundary using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

49 — Peak Value

Basic Vibration Parameters: govern peak value using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

50 — Rms Value

Basic Vibration Parameters: govern RMS value using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

51 — Frequency Range

Basic Vibration Parameters: govern frequency range using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

52 — Spectral Resolution

Basic Vibration Parameters: govern spectral resolution using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

53 — Time Waveform

Basic Vibration Parameters: govern time waveform using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

54 — Crest Factor Boundary

Basic Vibration Parameters: govern crest factor boundary using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

55 — Envelope/Demodulation Boundary

Basic Vibration Parameters: govern envelope/demodulation boundary using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

56 — Phase Boundary

Basic Vibration Parameters: govern phase boundary using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

57 — Orders Boundary

Basic Vibration Parameters: govern orders boundary using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

58 — Trend Value

Basic Vibration Parameters: govern trend value using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

59 — Alarm Basis

Basic Vibration Parameters: govern alarm basis using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

60 — Measurement Uncertainty

Basic Vibration Parameters: govern measurement uncertainty using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

61 — Unbalance Indication

Mechanical Fault Patterns: govern unbalance indication using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

62 — Misalignment Indication

Mechanical Fault Patterns: govern misalignment indication using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

63 — Mechanical Looseness

Mechanical Fault Patterns: govern mechanical looseness using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

64 — Soft-Foot Suspicion

Mechanical Fault Patterns: govern soft-foot suspicion using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

65 — Bearing Defect Suspicion

Mechanical Fault Patterns: govern bearing defect suspicion using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

66 — Belt Condition

Mechanical Fault Patterns: govern belt condition using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

67 — Belt Resonance

Mechanical Fault Patterns: govern belt resonance using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

68 — Coupling Condition

Mechanical Fault Patterns: govern coupling condition using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

69 — Gear-Mesh Condition

Mechanical Fault Patterns: govern gear-mesh condition using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

70 — Shaft-Related Condition

Mechanical Fault Patterns: govern shaft-related condition using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

71 — Rub/Contact Suspicion

Mechanical Fault Patterns: govern rub/contact suspicion using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

72 — Structural Resonance

Mechanical Fault Patterns: govern structural resonance using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

73 — Foundation Looseness

Mechanical Fault Patterns: govern foundation looseness using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

74 — Piping-Induced Vibration

Mechanical Fault Patterns: govern piping-induced vibration using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

75 — Fan/Pump Mechanical Condition

Mechanical Fault Patterns: govern fan/pump mechanical condition using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

76 — Bearing Identity

Bearing Condition: govern bearing identity using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

77 — Bearing Load Context

Bearing Condition: govern bearing load context using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

78 — Bearing Temperature Correlation

Bearing Condition: govern bearing temperature correlation using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

79 — Low-Frequency Vibration

Bearing Condition: govern low-frequency vibration using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

80 — High-Frequency Vibration

Bearing Condition: govern high-frequency vibration using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

81 — Envelope Trend

Bearing Condition: govern envelope trend using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

82 — Lubrication Interaction

Bearing Condition: govern lubrication interaction using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

83 — Contamination Interaction

Bearing Condition: govern contamination interaction using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

84 — Installation Damage

Bearing Condition: govern installation damage using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

85 — Electrical Bearing Damage Boundary

Bearing Condition: govern electrical bearing damage boundary using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

86 — False Brinelling Boundary

Bearing Condition: govern false brinelling boundary using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

87 — Standby-Machine Bearing Condition

Bearing Condition: govern standby-machine bearing condition using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

88 — Bearing-Noise Correlation

Bearing Condition: govern bearing-noise correlation using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

89 — Inspection Correlation

Bearing Condition: govern inspection correlation using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

90 — Post-Replacement Baseline

Bearing Condition: govern post-replacement baseline using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

91 — Airend Rotational Signature

Airend & Compressor-Specific Condition: govern airend rotational signature using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

92 — Male/Female Rotor Context

Airend & Compressor-Specific Condition: govern male/female rotor context using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

93 — Bearing Support Condition

Airend & Compressor-Specific Condition: govern bearing support condition using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

94 — Gear-Driven Airend

Airend & Compressor-Specific Condition: govern gear-driven airend using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

95 — Direct-Driven Airend

Airend & Compressor-Specific Condition: govern direct-driven airend using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

96 — Oil-Injected Airend Context

Airend & Compressor-Specific Condition: govern oil-injected airend context using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

97 — Oil-Free Airend Context

Airend & Compressor-Specific Condition: govern oil-free airend context using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

98 — Internal Contact Suspicion

Airend & Compressor-Specific Condition: govern internal contact suspicion using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

99 — Capacity-Loss Correlation

Airend & Compressor-Specific Condition: govern capacity-loss correlation using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

100 — Temperature Correlation

Airend & Compressor-Specific Condition: govern temperature correlation using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

101 — Oil-Analysis Correlation

Airend & Compressor-Specific Condition: govern oil-analysis correlation using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

102 — Separator/Pulsation Influence

Airend & Compressor-Specific Condition: govern separator/pulsation influence using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

103 — Load/Unload Influence

Airend & Compressor-Specific Condition: govern load/unload influence using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

104 — Overhaul Assessment

Airend & Compressor-Specific Condition: govern overhaul assessment using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

105 — Post-Overhaul Baseline

Airend & Compressor-Specific Condition: govern post-overhaul baseline using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

106 — Motor Electromagnetic Influence

Motor Drive Coupling Belt: govern motor electromagnetic influence using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

107 — Motor Mechanical Influence

Motor Drive Coupling Belt: govern motor mechanical influence using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

108 — Coupling Alignment

Motor Drive Coupling Belt: govern coupling alignment using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

109 — Coupling Element

Motor Drive Coupling Belt: govern coupling element using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

110 — Belt Tension

Motor Drive Coupling Belt: govern belt tension using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

111 — Belt Wear

Motor Drive Coupling Belt: govern belt wear using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

112 — Pulley/Sheave Condition

Motor Drive Coupling Belt: govern pulley/sheave condition using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

113 — Direct-Drive Alignment

Motor Drive Coupling Belt: govern direct-drive alignment using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

114 — Gear Drive

Motor Drive Coupling Belt: govern gear drive using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

115 — Vsd Speed Effect

Motor Drive Coupling Belt: govern VSD speed effect using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

116 — Motor Base Condition

Motor Drive Coupling Belt: govern motor base condition using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

117 — Hold-Down Bolts

Motor Drive Coupling Belt: govern hold-down bolts using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

118 — Thermal Growth Context

Motor Drive Coupling Belt: govern thermal growth context using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

119 — Post-Maintenance Verification

Motor Drive Coupling Belt: govern post-maintenance verification using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

120 — Drive-Train Baseline

Motor Drive Coupling Belt: govern drive-train baseline using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

121 — Natural Frequency Boundary

Resonance Structure & Installation: govern natural frequency boundary using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

122 — Operating-Speed Resonance

Resonance Structure & Installation: govern operating-speed resonance using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

123 — Variable-Speed Resonance Crossing

Resonance Structure & Installation: govern variable-speed resonance crossing using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

124 — Foundation Stiffness

Resonance Structure & Installation: govern foundation stiffness using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

125 — Skid Condition

Resonance Structure & Installation: govern skid condition using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

126 — Anchor Condition

Resonance Structure & Installation: govern anchor condition using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

127 — Grouting Boundary

Resonance Structure & Installation: govern grouting boundary using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

128 — Floor Flexibility

Resonance Structure & Installation: govern floor flexibility using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

129 — Piping Support

Resonance Structure & Installation: govern piping support using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

130 — External Machine Influence

Resonance Structure & Installation: govern external machine influence using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

131 — Duct/Fan Influence

Resonance Structure & Installation: govern duct/fan influence using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

132 — Structural Amplification

Resonance Structure & Installation: govern structural amplification using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

133 — Temporary Installation

Resonance Structure & Installation: govern temporary installation using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

134 — Relocation Effect

Resonance Structure & Installation: govern relocation effect using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

135 — Corrective Verification

Resonance Structure & Installation: govern corrective verification using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

136 — Trend Review

Analysis Decision & Work Management: govern trend review using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

137 — Single-Point Anomaly

Analysis Decision & Work Management: govern single-point anomaly using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

138 — Repeat Measurement

Analysis Decision & Work Management: govern repeat measurement using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

139 — State-Matched Comparison

Analysis Decision & Work Management: govern state-matched comparison using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

140 — Spectral Review

Analysis Decision & Work Management: govern spectral review using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

141 — Specialist Escalation

Analysis Decision & Work Management: govern specialist escalation using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

142 — Severity Classification

Analysis Decision & Work Management: govern severity classification using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

143 — Continued-Operation Decision

Analysis Decision & Work Management: govern continued-operation decision using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

144 — Shortened Monitoring Interval

Analysis Decision & Work Management: govern shortened monitoring interval using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

145 — Work-Order Generation

Analysis Decision & Work Management: govern work-order generation using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

146 — Shutdown Planning

Analysis Decision & Work Management: govern shutdown planning using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

147 — Physical Inspection

Analysis Decision & Work Management: govern physical inspection using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

148 — As-Found Confirmation

Analysis Decision & Work Management: govern as-found confirmation using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

149 — As-Left Vibration

Analysis Decision & Work Management: govern as-left vibration using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

150 — Baseline Reset

Analysis Decision & Work Management: govern baseline reset using repeatable measurement and machine context. Record exact asset and point, sensor/mounting, direction, units, frequency range, speed, load, pressure, temperature, operating mode, baseline, trend, confidence and reviewer. Do not diagnose a component from one generic spectral feature without corroborating evidence. Where severity or failure interpretation affects continued operation, overhaul or safety, use competent vibration/mechanical review and current equipment/measurement guidance.

151 — Premium Vibration Measurement Register

152 — Mechanical Condition Diagnostic Matrix

153 — Technical / Vibration Verification Gate

Measurement points/directions are permanently identifiable where practical.

Sensor/mounting/method are repeatable enough for trending.

Speed/load/pressure/operating state accompany readings.

VSD machines are compared at meaningful speed/load states.

Healthy baseline is established from accepted operation.

Generic vibration charts are not treated as universal machine limits.

Spectral indications are treated as diagnostic evidence, not automatic root-cause proof.

Vibration findings correlate with temperature, lubricant, performance and inspection where useful.

Unsafe/inaccessible points use an engineered alternative rather than unsafe collection.

After intrusive maintenance, as-left vibration is captured where material.

Rapid deterioration receives appropriate escalation even if an absolute limit is not crossed.

Resonance and installation effects are separated from internal machine defects where possible.

Specialist analysis governs high-impact continued-operation/overhaul decisions.

Superseded baselines remain recoverable after overhaul/relocation.

What vibration should be monitored on an air compressor?

Monitor parameters appropriate to the machine and failure modes at repeatable points on motor, airend, bearings, drives and auxiliaries, with speed/load context.

Where should vibration be measured?

At defined structural/bearing locations suitable for the machine and measurement method; exact points should be repeatable and safely accessible.

Can one high vibration reading prove a bearing is bad?

No. Verify the measurement and correlate spectrum, speed/load, temperature, lubrication and inspection evidence.

How does VSD speed affect vibration?

Different speeds can excite different mechanical or structural responses, so state-matched baselines and speed correlation are important.

What is a vibration baseline?

A controlled vibration reference from known acceptable operation at a defined point, method, speed/load and configuration.

Can vibration detect misalignment?

It can support a misalignment diagnosis, but alignment should be verified through appropriate mechanical evidence rather than one vibration feature alone.

What is resonance?

A condition where excitation approaches a structural or component natural frequency, potentially amplifying vibration.

Should vibration be checked after maintenance?

Where the work affects the rotating train, alignment, bearings, foundation or drive, post-maintenance vibration can verify the new condition.

Can oil analysis and vibration be used together?

Yes. Correlated wear-debris, temperature and vibration trends can strengthen a mechanical-condition diagnosis.

Does a low overall vibration mean the machine is healthy?

Not necessarily. Some developing faults require frequency-specific or other condition evidence.

Can AI diagnose vibration spectra?

AI can screen patterns, but high-impact diagnoses require trustworthy measurement context and competent vibration analysis.

When should vibration trigger shutdown?

Use equipment/site protection limits and competent risk review; there is no universal shutdown value for every compressor.