Bently 3500-64M 140734-05 Dynamic Pressure Monitor Main Board

Description

Hardware & Electrical Specifications

‑ Manufacturer: Bently Nevada (Baker Hughes) ‑ Compatible System: 3500‑05 full‑size / mini TSI rack, cooperates with 3500/22M TDI module ‑ Functional Type: 4‑Channel Dynamic Pressure / Combustion Pulsation Monitor Module ‑ Channel quantity: 4 independent dynamic pressure input channels ‑ Supported transducers: 2‑wire / 3‑wire high‑temperature dynamic pressure sensors ‑ Input impedance: 3‑wire:10 kΩ; 2‑wire:1.5‑3.5 MΩ typical ‑ Nominal sensitivity:100 mV/psi (1.45 mV/mBar) ‑ Filter modes:  ‑ Low mode: 5 Hz ~ 4 kHz band‑pass  ‑ High mode:10 Hz ~14.75 kHz band‑pass  ‑ Notch filter:50 Hz / 60 Hz optional ‑ Measurement update rate: ≤100 ms ‑ Typical power consumption:8.2 W, powered by rack backplane bus ‑ Front‑panel Indicators: OK LED, TX/RX LED, Bypass LED; four short‑circuit‑protected BNC buffered signal outputs ‑ Matching Parts: Main‑board 140734‑05 must pair with rear I/O:140471‑02(Internal Termination) or 140482‑02(External Termination), sold separatelyBaker Hugh… ‑ Hot‑swap: Supports hot‑swap; during replacement, four‑channel dynamic‑pressure measurement is temporarily invalid; other rack modules keep running normally. ‑ PCB Coating: Conformal coated for G3 harsh industrial cabinet environment ‑ Safety Certification: SIL‑2 capable within complete certified 3500 TMR system set; ATEX, IECEx, cNRTLus hazardous‑area approvals available

Environmental Specifications

‑ Operating Temperature:0 ℃ ~ +65 ℃ ‑ Storage Temperature:‑40 ℃ ~ +85 ℃ ‑ Relative Humidity:5%‑95 % non‑condensing ‑ Vibration & Shock: Complies with API‑670 power‑plant cabinet EMC standards

Mechanical Data

‑ Dimension(W×H×D):241.3 mm ×24.4 mm ×241.8 mm ‑ Weight: approx 0.82 kg

Core Functions

1. Dynamic‑pressure signal conditioning: Process 2‑wire / 3‑wire high‑temperature pressure‑transducer signals for combustion‑pulsation acquisition.
2. Dual‑mode band‑pass filtering: Low‑frequency and high‑frequency filter groups for different combustion‑oscillation frequency bands; built‑in power‑frequency notch filter suppresses site interference.
3. Cascade input function: One physical sensor input can be assigned to four channels with different filter parameters, multi‑frequency‑band simultaneous analysis.
4. Flexible alarm configuration: Alert and Danger dynamic‑pressure setpoints with configurable delay; generate rack‑system events, trigger relay‑module alarm output.
5. TMR redundant support: Can form triple‑modular‑redundant system with three identical modules for high‑safety machinery‑protection application.
6. Self‑diagnosis: Continuous transducer cable fault detection; report module hardware fault to rack‑system log.

Installation, Replacement & Critical Warnings

1. Supports hot‑swap; four‑channel dynamic‑pressure measurement loses effectiveness during pulling‑out; other rack modules keep running.
2. Compatibility warning: ‑ Two rear‑I/O options: internal‑termination (direct wiring to rear‑card) or external‑termination (via external terminal block and dedicated connecting cable). Select I/O type according to site‑wiring scheme. ‑ Cannot swap main‑board or rear‑I/O between 3500/64M and old‑generation 3500/64. ‑ For TMR triple‑redundant configuration, three identical 140734‑05 modules must be installed in adjacent slots of rack.
3. After replacement, check OK / Bypass LED status; download rack‑configuration project, complete dynamic‑pressure signal simulation test, verify channel reading and alarm‑trigger function.

4. Common failure mode: Front‑end high‑frequency signal‑conditioning‑circuit damage, BNC‑connector wear, component aging; sensor‑cable short‑circuit / open‑circuit may affect channel measurement.