Channel Configuration

4 measurement channels, configurable in paired programmable mode

Compatible with Bently Nevada 3300XL and other proximity probes

Each channel supports multiple measurement types, including:

Radial vibration

Thrust position

Differential expansion

Eccentricity

REBAM (Rotor Expansion Bending and Misalignment), etc.

Signal Input & Conditioning

Input type: Eddy current / capacitance probe signals

Signal range: –20 VDC to +20 VDC

Probe drive current: approx. 5 mA

Integrated signal conditioning including amplification and filtering

Measurement accuracy: ±0.5% of full scale (FS)

Alarms & Outputs

Fully programmable Alert and Danger alarm thresholds

Supports alarm relay linkage via 3500/32 Relay Module

Output options:

3500/40M: No native 4–20 mA output

3500/42M: Supports single-channel 4–20 mA output

Power Supply & Consumption

Power input: 24 VDC ±10%

Typical power consumption: 7.7 W

Compatible with 3500 redundant power supply modules

Built-in overcurrent and reverse-polarity protection

Mechanical Specifications

Standard 3500 module form factor

Dimensions: 241.3 mm × 24.4 mm × 99.1 mm
(9.50 in × 0.96 in × 3.90 in)

Designed for 3500 standard 19-inch rack, rail-mounted installation

Environmental Specifications

Operating temperature range: –30 °C to +65 °C

Relative humidity: 5% to 95%, non-condensing

Industrial-grade conformal coating

High resistance to electromagnetic interference (EMI)

Complies with IEC 61010 safety standards

Software Compatibility

Configured using 3500 Rack Configuration Software (v4.xx and later)

Supports offline configuration and online diagnostics

Fully compatible with System 1 condition monitoring software

BENTLY 3500/40 4-Channel Proximity Monitoring Module