Module Configuration

Channel Configuration:

4 independent input channels

Supports grouped configurations (e.g. 2 + 2 channel functional combinations)

Sensor Compatibility:

Bently Nevada 3300 series eddy current probes

Vibration sensors (acceleration / velocity)

Measurement Functions

Supports multiple rotating machinery measurement parameters, including:

Radial vibration

Axial (shaft) displacement

Differential expansion

Eccentricity

REBAM® (Rotor Expansion Bearing Average Motion)

Absolute shaft vibration (Bently Nevada)

Signal Input

Eddy Current Probe Input: –10 VDC to +10 VDC

Vibration Sensor Input: Acceleration / velocity signals

Communication & Integration

System Interface: 3500 system bus

System Communication:

Communication with rack framework controllers

Data exchange with upper-level systems (e.g. Plantweb)

Mechanical & Electrical Specifications

Installation: Bently Nevada 3500 standard rack

Module Type: Half-height module

Slot Occupancy: 1 rack slot

Power Supply: Provided by 3500 rack

+5 VDC, ±15 VDC

Power Consumption: Approx. 10.5 W

Environmental Conditions

Operating Temperature: 0 °C to +60 °C

Relative Humidity: 5%–95% (non-condensing)

Product Lifecycle Status

Status: Legacy / Discontinued

Spare Parts Availability: No official new parts supply; limited to dismantled or refurbished units

Core Functions & Application Scenarios
Multi-Parameter Condition Monitoring

Compatible with both eddy current and vibration sensors, the module performs real-time acquisition and processing of key rotating machinery parameters. It supports diverse monitoring requirements such as radial vibration, axial displacement, and rotor dynamic behavior.

Alarm & Machinery Protection

Built-in programmable Alert and Danger thresholds enable automatic alarm triggering and protective shutdown actions when monitored parameters exceed preset limits, ensuring safe and reliable equipment operation.

BENTLY 3500/42 140471-01 Proximitor Seismic Monitor

Data Processing & Communication

Measurement data is transmitted via the 3500 system bus to the rack controller and upper-level systems, supporting remote monitoring, trending, fault diagnosis, and predictive maintenance strategies.

Flexible Channel Configuration

Input channels can be flexibly grouped and configured to support multiple monitoring functions. This adaptability makes the module well suited for complex machinery applications, such as combined monitoring of radial vibration and axial displacement in steam turbine shaft systems.

Typical Applications

Condition monitoring and protection of steam turbines in thermal power plants

Compressor monitoring in petrochemical facilities

Natural gas transmission pump units

Fan and blower shaft monitoring in metallurgical and heavy industries