Bently Nevada 3500/40M-01-01 Proximitor Monitor Module

The Bently Nevada 3500/40M-01-01 is a four-channel proximitor monitor for the 3500 rack system. It processes signals from eddy current proximity probes to continuously measure shaft radial vibration, axial position and probe gap of critical rotating machinery.

This monitor supports configurable alert and danger alarm thresholds and comprehensive loop diagnostics. It provides analog outputs and relay alarm contacts for equipment protection and data upload to DCS systems. Widely used in turbine monitoring cabinet maintenance, system upgrades and spare parts stocking for power, oil & gas and petrochemical industries.

Main Specifications

• Brand: Bently Nevada (Emerson)
• Model: 3500/40M-01-01 Proximitor Monitor Module
• Applicable System: Bently Nevada 3500 series monitoring rack
• Supported Sensor: Eddy current non-contact proximity probe system
• Monitoring Parameters: Shaft vibration, axial position, transducer gap
• Channel Quantity: Four independent signal input channels
• Power Supply: Powered by the 3500 rack backplane
• Output: Analog 4–20mA output and relay alarm contact
• Mounting: Single slot plug-in rack module
• Operating Temperature: -20°C ~ +60°C

Core Functions

• Receive and condition raw signals from eddy current probes and extension cables
• Real-time measurement of radial vibration and axial displacement of rotating shafts
• Support independent setting of alert and danger alarm thresholds for each channel
• Continuous circuit self-test to detect cable breakage, short circuit and hardware faults
• Convert vibration measurement values into standard analog signals for DCS access
• Trigger relay contact output for interlock protection when dangerous values occur
• Transmit measurement data and alarm events to rack communication modules
• Support online parameter configuration and calibration via host monitoring software
• Work together with other modules to build complete rotating machinery protection system
• Ensure reliable long-term monitoring for continuously operating industrial equipment

Application Scenarios

• Thermal power plant steam turbine generator vibration monitoring racks
• Combined cycle power plant gas turbine safety monitoring systems
• Oil & gas plant large centrifugal compressor monitoring control cabinets
• Waste heat power generation unit rotating machinery protection platforms
• Petrochemical plant turbo-expander and large pump monitoring occasions
• Pipeline transportation turbomachinery online condition monitoring systems
• Metallurgical plant large fans and steam turbine monitoring projects
• Offshore platform rotating equipment vibration monitoring control racks
• Bently Nevada 3500 monitoring system overhaul and spare parts replacement
• All industrial sites requiring continuous protection monitoring of rotating equipment