1. Product Title

Bently Nevada 330425-02-05 IEPE Piezoelectric Accelerometer, M8 Internal Thread, 5m Integrated Armored Cable

2. Product Overview

Model Suffix Definition

• First segment 330425: Low-sensitivity, wide measuring range model (core difference from 330400)
• -02: M8 internal threaded mounting hole (same mechanical interface as 330400-02-05)
• -05: 5 meters pre-molded stainless steel armored shielded integral cable

Core difference vs 330400 series

• 330400: 100 mV/g sensitivity, 50g full scale
• 330425: 25 mV/g lower sensitivity, expanded 75g peak measuring range, ideal for heavy impact, large amplitude high-frequency vibration scenarios (gearbox severe meshing, reciprocating compressor casing shock vibration)

  Fully sealed 316L stainless steel housing, ATEX/IECEx intrinsically safe certification, compatible with Bently 3500 protection system, 1701 monitor and Trendmaster Pro TSI online condition monitoring rack.

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3. Full Technical Specifications

• Brand: Bently Nevada (Baker Hughes)
• Model: 330425-02-05
• Warranty: 1 Year
• Condition: 100% New Original
• Working Principle: Shear piezoelectric IEPE sensor with built-in charge amplifier
• Sensitivity: 25 mV/g (2.55 mV/(m/s²)), tolerance ±5%
• Max Acceleration Range: 75g peak (735 m/s²)
• Frequency Response: 10 Hz ~ 15 kHz (±3dB), resonant frequency ≥28kHz
• Linearity Error: ≤1% full scale within 75g range
• Power Supply: 18~30VDC constant current 4mA IEPE loop power
• Output Signal: AC vibration signal superimposed on 8~12VDC DC bias voltage
• Mounting Interface: M8 internal threaded blind hole
• Integrated Cable: 5m 3-core stainless steel armored shielded cable
• Housing: Hermetically sealed 316L stainless steel, IP68
• Operating Temperature: -55℃ ~ +121℃
• Shock Resistance: Max 5000g peak mechanical shock
• Certifications: ATEX, IECEx, CSA Ex ia IIC T4, CE, API 670 compliant
• Matching Monitoring System: 3500 Machinery Protection System, 1701 Monitor, Trendmaster Pro
• Remark: Active production model, spare part for heavy-duty high-amplitude vibration monitoring

4. Application Scenarios

1. Thermal Power Plant Turbo-Generator & Gearbox

   Install on turbine reduction gearbox casing to capture heavy gear meshing high-frequency vibration, used for gear tooth fatigue, bearing failure early warning and 3500 system safety trip interlock.

2. Petrochemical Reciprocating Compressor & Large Centrifugal Units

   Monitor casing shock vibration of reciprocating compressors, expansion turbines and large blowers; the 75g wide range avoids signal saturation under large vibration impact.

3. Mining & Heavy Industry Rotating Equipment

   High-load fans, large pumps, industrial turboexpanders for predictive maintenance and mechanical fault diagnosis.

Bently Nevada Accelerometer Series Consolidated List

1. 330400-01-05：100mV/g, 50g, 1/4-28 UNF external thread, 5m cable
2. 330400-02-05：100mV/g, 50g, M8 internal thread, 5m cable
3. 330425-02-05：25mV/g, 75g, M8 internal thread, 5m wide-range version
4. Extension cable：167563-10 (10ft armored cable for 200350 seismic accelerometer)