Dedicated external wiring termination rear card matched with 3500/42M front monitor module, supports field connection of proximity probes, velocity and acceleration sensors, transmits measurement signals to front board for turbomachinery vibration and displacement protection, fully tested surplus spare parts

Product Overview

• PN: 3500/42 Rear I/O Module, Part No: 140471-01
• Brand: Bently Nevada (Baker Hughes)
• Series: 3500 Machinery Protection TSI System
• Type: External Termination Rear Input/Output Module

• Function: This rear termination board is specially paired with 3500/42M front monitor module with external termination design. It provides field wiring screw terminals for 4 groups of sensor cables, receives signals from eddy current proximity probes, Velomitor velocity transducers and ICP acceleration sensors, then forwards conditioned signals to the front 3500/42M module via rack backplane bus. It isolates field interference signals and realizes stable long-distance wiring between on-site sensors and the rack cabinet, and supports 4-20mA analog signal output terminals for DCS system data acquisition.

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Core Features

1. Four-channel independent wiring terminal area, one-to-one corresponding to four input channels of the matched front monitor module
2. Built-in EMI filtering and surge suppression circuit, effectively resist electromagnetic interference in power plant and petrochemical control rooms
3. Lockable screw terminal blocks prevent wire loosening caused by long-term mechanical vibration of rotating equipment
4. Strict front-rear slot paired installation, compatible with hot swapping under dual redundant rack power supply configuration

5. Reserved analog signal output terminals to transmit converted 4-20mA measurement values to external distributed control systems

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Technical Specifications

• Supported Input Sensors: 3300XL eddy current probes, velocity transducers, piezoelectric acceleration sensors
• Wiring Mode: External field cable direct termination
• Form Factor: Full-height rear I/O module
• Net Weight: 0.48kg
• Operating Temperature: -40℃ ~ +70℃
• HS Code: 8538900000
• Certifications: CE

• Product Status: Discontinued by original manufacturer, brand new original and fully tested refurbished modules available

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Compatibility

• Mandatory Matched Front Module: External termination version 3500/42M Proximitor & Seismic Monitor front card
• Applicable Rack: All 3500/05 series 12-slot and 14-slot panel mount monitoring chassis
• Distinction Note: Differentiated from internal termination rear card 128229-01 which is used with 140734-02 front module

• Incompatible Products: Internal termination rear I/O boards, 3500/40M dedicated proximitor rear cards, third-party non-3500 series rack chassis

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Application

1. On-site sensor signal wiring terminal for steam turbine, gas turbine and centrifugal compressor 3500 TSI protection racks
2. Long-distance signal transmission between field vibration/displacement sensors and cabinet-mounted monitoring rack
3. Spare replacement and wiring system renovation of legacy external termination type 3500/42M monitoring subsystems