Bently Nevada 3500/42M Proximitor Seismic Monitor Module

Bently Nevada 3500/42M is a four‑channel proximitor seismic monitor module for the 3500 machinery protection system. It processes eddy‑current probe displacement signals and seismic vibration sensor signals, realizing real‑time measurement of shaft displacement, vibration amplitude and phase for rotating machinery.

This front‑end monitor board works together with rear I/O terminal module such as 128229‑01. It supports configurable alarm and trip thresholds, outputs alarm relay signals and uploads monitoring data to host system. Widely adopted as replacement spare parts for turbine, compressor and large rotating equipment protection cabinet maintenance and retrofit projects.

Main Specifications

• Brand: Bently Nevada (Emerson)
• Model: 3500/42M
• Product Type: 4‑Channel Proximitor Seismic Monitor Module
• Applicable System: Bently Nevada 3500 Machinery Protection System
• Input Signal: Proximity probe signal, seismic vibration sensor signal
• Channel Quantity: 4 independent measuring channels
• Matching Part: 128229‑01 rear I/O terminal module
• Function: Threshold alarm, trip output, data uploading
• Certification: UL, CE industrial compliance certification
• Operating Temperature Range:‑30°C ~ +65°C

Core Functions

• Complete four‑channel vibration and displacement signal acquisition and processing for rotating machinery
• Measure shaft radial vibration, shaft displacement and casing vibration parameters of rotating equipment
• Support user‑configurable alarm and danger trip threshold for machinery protection logic judgment
• Cooperate with rear terminal module to receive sensor signals from field site
• Output alarm and trip relay signals to interlock protection system of main equipment
• Transmit monitoring data and fault alarm information through 3500 rack backplane bus
• Front‑panel LED indicators reflect channel status, alarm and fault diagnostic information
• Support parameter configuration via 3500 system configuration software
• Built‑in hardware self‑diagnosis detects channel abnormal and sensor fault condition
• Provide core measuring and protection function for 3500 machinery protection hardware station

Application Scenarios

• Power plant steam turbine and generator unit 3500 machinery protection monitoring cabinets
• Petrochemical plant compressor, large pump rotating‑equipment vibration‑protection control racks
• Metallurgy industry large fan and rotary equipment online condition‑monitoring projects
• Chemical plant key rotating machinery vibration displacement monitoring and interlock‑protection stations
• Paper‑making industry large‑scale rotating equipment safety monitoring application scenarios
• Equipment renovation, monitor module replacement and 3500 system function upgrade projects
• 3500 rack maintenance and spare‑parts backup for legacy industrial production facilities
• Bently Nevada 3500 spare‑parts inventory and on‑site monitoring cabinet maintenance supporting projects