Bently Nevada 3500/25 Keyphasor Monitor I/O Module

System Association

Part of the Bently Nevada 3500 series machinery protection system

Designed for use with the 3500/25 Keyphasor Monitor

Module Type

I/O module with integrated internal safety barrier

Equipped with internal wiring terminals, eliminating the need for external barrier modules

Channel Configuration

4 channels, configurable as Proximity / Acceleration (Prox/Accel) channels

Fully compatible with:

Keyphasor® signals

Proximity probe signals

Acceleration sensor signals

Wiring Method

Internal terminal wiring, simplifying installation and improving wiring reliability

Safety Features

Integrated intrinsic safety barrier, providing protection for field signals

Suitable for hazardous area signal access, including explosion-proof and intrinsically safe applications

Signal Adaptability

Supports acquisition and conditioning of:

Keyphasor (phase reference) signals

Speed signals

Shaft displacement signals

Vibration signals

Application Scenarios
This module is widely used in machinery condition monitoring systems for large rotating equipment, including:

Steam turbines

Compressors

Motors

It is commonly applied in industries such as power generation, petrochemicals, metallurgy, and related heavy industries. The module enables key phase, speed, and vibration signal acquisition, supporting predictive maintenance, fault diagnosis, and early warning of equipment abnormalities.
Its integrated safety barrier design makes it particularly suitable for explosion-hazard environments requiring direct access to hazardous area signals.

Bently Nevada 3500/25 135473-01｜Keyphasor I/O Module｜