2. Product Overview

Model suffix rule difference vs 330400-01-05

• 330400-01-05: ¼-28 UNF external stud mounting thread
• 330400-02-05: M8 internal threaded mounting hole (core difference)

  Suffix -05 consistently represents 5 meters pre-integrated armored shielded cable.

  It complies fully with API 670 turbomachinery protection standard, with global explosion-proof intrinsic safety certifications, perfectly matched with Bently 3500 monitoring system, 1701 monitor and Trendmaster Pro online vibration protection rack, mainly used for high-frequency vibration detection such as gear meshing, bearing fatigue damage and casing resonance.

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3. Full Technical Specifications

• Brand: Bently Nevada (Baker Hughes, USA)
• Model: 330400-02-05
• Warranty: 1 Year
• Condition: 100% New Original
• Working Principle: Compression piezoelectric IEPE sensor with built-in charge amplifier
• Standard Sensitivity: 100 mV/g (10.2 mV/(m/s²)), tolerance ±5%
• Maximum Measuring Range: 50g peak acceleration
• Frequency Response: 10 Hz ~ 15 kHz (±3dB), resonant frequency ≥28kHz
• Power Supply: 18~30VDC constant current 4mA IEPE loop power supply
• Output Signal: AC vibration signal superimposed on 8~12VDC DC bias voltage
• Mounting Interface: M8 internal threaded mounting hole (key difference from 330400-01-05)
• Integrated Cable: 5m stainless steel armored 3-core shielded cable
• Housing Material: 316L stainless steel, IP68 waterproof and dustproof
• Operating Temperature: -55℃ ~ +125℃
• Linearity Error: ≤1% FS within full 50g range
• Certifications: ATEX, IECEx, CSA intrinsically safe Ex ia IIC T4, CE, API 670 compliant
• Compatible Systems: Bently 3500 Protection System, 1701 Monitor, Trendmaster Pro TSI system
• Remark: Active production model, critical spare part for turbomachinery protection

4. Application Scenarios

1. Thermal Power Plant Steam/Gas Turbine Unit

   Install on turbine bearing pedestals and gearbox casings to collect high-frequency acceleration vibration signals for 3500 system alarm and safety trip interlock protection.

2. Petrochemical Centrifugal Compressor & Turboexpander

   Monitor casing vibration of large process compressors, early warning of gear tooth breakage, bearing wear, rotor unbalance and misalignment faults.

3. Heavy Industrial Rotating Equipment Predictive Maintenance

   Applied to large blowers, fans, pumps in metallurgy, coal and chemical plants for real-time equipment health diagnosis and condition-based maintenance.

Bently Nevada 330400 Series Summary Update

1. 1/4-28 UNF external thread: 330400-01-05 (5m cable)
2. M8 internal thread version: 330400-02-05 (5m cable)
3. Matching armored extension cable: 167563-10 (10ft for 200350 accelerometer)