Bently 3500-65 145988-02 16‑Channel Temperature 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: 16‑Channel High‑Density RTD / Isolated‑Tip‑TC Temperature Monitor Module ‑ Channel quantity: 16 multi‑functional temperature input channels ‑ Supported transducers:  ‑ RTD: Pt‑100(α=0.00385), Ni‑120, Cu‑10 (2‑wire /3‑wire /4‑wire)  ‑ Thermocouple: Isolated‑tip Type J, K, T, E, N, R, S ‑ RTD excitation current:925 μA typical ‑ Input impedance: ≥1 MΩ per leadBaker Hugh… ‑ Measuring range:‑200 ℃ ~ +1760 ℃ (depends on sensor type) ‑ Measurement accuracy: RTD ±0.1 %FS; TC ±1‑2 ℃; built‑in cold‑junction compensation for thermocouple ‑ Scan rate: All‑channels update within 1.6 seconds ‑ Typical power consumption:3 W, powered by rack backplane busBaker Hugh… ‑ Front‑panel Indicators: OK LED, TX/RX LED, Bypass LED ‑ Matching Parts: Main‑board 145988‑02 must pair with rear I/O:172103‑01(Internal Termination) or 172109‑01(External Termination), sold separatelyBaker Hugh… ‑ Hot‑swap: Supports hot‑swap; during replacement, sixteen‑channel temperature 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, CE, CSA hazardous‑area approvals available

Environmental Specifications

‑ Operating Temperature:‑30 ℃ ~ +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 0.91 kgbentlyplc

Core Functions

1. Multi‑sensor signal conditioning: Process RTD and isolated‑tip thermocouple signals, mixed‑sensor configuration allowed on different channels.
2. High‑density multi‑point temperature monitoring: Bearing‑metal temperature, lube‑oil temperature, generator‑stator temperature, casing and auxiliary‑system‑temperature measurement, saving rack slot resources.
3. Flexible alarm configuration: Alert and Danger temperature setpoints with configurable delay and hysteresis; generate rack‑system events, trigger relay‑module alarm output.
4. TMR redundant support: Can form triple‑modular‑redundant system with three identical modules installed in adjacent slots for high‑safety machinery‑protection applicationBaker Hugh….
5. Self‑diagnosis: Continuous open‑circuit / short‑circuit fault detection for RTD and TC sensors; report module hardware fault to rack‑system log.

Installation, Replacement & Critical Warnings

1. Supports hot‑swap; sixteen‑channel temperature 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 (match external terminal‑block 172115‑01). Select I/O type according to site‑wiring schemeBaker Hugh…. ‑ Cannot swap main‑board or rear‑I/O between 3500/65 and 3500/60 / 3500/61 temperature‑monitor modules. ‑ TMR triple‑redundant mode requires three identical 145988‑02 modules to be installed in adjacent slots of rack.
3. After replacement, check OK / Bypass LED status; download rack‑configuration project, verify temperature reading and alarm‑trigger function.

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