System Type

Integrated vibration monitoring and protection system

Compact, standalone design

Inputs

Supports proximity probes (eddy current displacement sensors)

Supports velocity sensors

Supports accelerometers

Typical channel count: 1 to 4 channels (configuration-dependent)

Monitored Parameters

Shaft vibration

Bearing vibration

Axial position

Radial displacement

Overall vibration level

Outputs

4–20 mA analog outputs (for DCS / PLC integration)

Relay outputs for alarms and trips

Buffered dynamic outputs for signal analysis (BNC)

Alarm & Protection Functions

Programmable Alert and Danger setpoints

Time delay and latching logic

Suitable for machinery protection and basic shutdown functions

Frequency Response

Suitable for typical rotating machinery vibration ranges

Supports both static and dynamic measurements

Power Supply

Universal AC or DC power supply (model-dependent)

Designed for industrial power environments

Configuration & Communication

Configuration via PC-based software

Communication options typically include:

Modbus (for control system integration)

Serial / Ethernet (model-dependent)

Key Features

Compact alternative to full-scale 3500 rack systems

Easy installation and commissioning

Cost-effective solution for non-critical or balance-of-plant equipment

API-compliant measurement performance (application-dependent)

Typical Applications

Pumps

Fans and blowers

Compressors

Motors

Small to medium turbines

Auxiliary machinery in power plants and oil & gas facilities

The 1900/55 provides reliable vibration protection and monitoring while minimizing system complexity and cost.

BENTLY 1900/55 Fan Monitor