These accelerometers are designed for critical machinery applications where casing acceleration measurements are required, such as gear mesh monitoring. The 330400 model meets American Petroleum Institute Standard 670 requirements for accelerometers, providing an amplitude range of 50 g peak and a sensitivity of 100 mV/g.

• Mounting Thread: 1 ¼-28 UNF integral stud
• Agency Approval: Multiple approvals (CSA, ATEX, IECEx)
• Sensitivity: 10.2 mV/m/s² (100 mV/g) ±5%
• Acceleration Range: 490 m/s² (50 g) peak overall acceleration over 10 Hz to 15 kHz range
• Amplitude Linearity: ±1% up to 490 m/s² (50 g) peak
• Broadband Noise Floor: 0.039 m/s² (0.004 g) rms (10 Hz to 15 kHz)
• Frequency Response: 10 Hz to 15 kHz (600 cpm to 900,000 cpm) ±3dB; 30 Hz to 10 kHz (1800 cpm to 600,000 cpm) ±10%
• Temperature Sensitivity: -11% to +3% typical over operating temperature range

• Gearbox Monitoring: Wide frequency range (up to 15 kHz) detects gear mesh signals and identifies worn or broken teeth
• Rolling Element Bearing Analysis: Captures high-frequency impacts caused by pits and cracks in ball or roller bearings
• Casing Vibration Measurement: Used on machines where internal shaft vibration transmits to exterior, such as small pumps or motors
• High-Speed Turbomachinery: Applied to steam turbines and compressors for condition monitoring of machines and supporting components
• Harsh & Hazardous Environments: -05 approval rating enables safe installation in oil refineries, gas processing plants, and chemical facilities (Class I, Div 1/Zone 0 areas)
• API 670 Compliance: Meets American Petroleum Institute standards for vibration monitoring in critical machinery protection systems