BENTLY 3500/44-01-00 A key module in the 3500 series mechanical protection system

The BENTLY 3500/44-01-00 is a critical module in the 3500 Series Machinery Protection System developed by Bently Nevada, specifically designed for vibration monitoring and protection of rotating machinery. Below is its comprehensive detailed information:

1. Product Overview

(1) Purpose

It is used to monitor parameters such as vibration, displacement, and velocity of rotating machinery (e.g., steam turbines, compressors, generators), providing continuous online monitoring and advanced alarm functions.

(2) Design Features

Supports multiple sensor types, including eddy current sensors, velocity sensors, and acceleration sensors, to ensure data accuracy.
Each channel can be independently configured with filter options (e.g., 1X vibration tracking, band-pass filters) to meet different monitoring requirements.
Enables redundant configuration and can work in synergy with other modules of the 3500 system to enhance system reliability.
Equipped with automatic calibration and fault diagnosis functions, and supports hot-swapping for easy maintenance and expansion.

2. Technical Specifications

(1) Input Channels

Vibration Input: 4 channels, supporting 2-wire or 3-wire accelerometers, velocity sensors, or proximity sensors.
Temperature Input: 4 channels, supporting Type E, J, K, and T thermocouples (TC), as well as 2-wire or 3-wire resistance temperature detectors (RTD).

(2) Output Channels

6 relay outputs, configurable to be triggered by alarm or danger status.
4 recorder outputs with 4-20 mA current signal.
1 dedicated buffered output.

(3) Communication Interfaces

Supports multiple communication protocols such as Ethernet, Modbus, and RS232/485, enabling seamless connection with upper-level computers, monitoring systems, or alarm devices.

(4) Accuracy & Stability

Absolute accuracy error: ±0.2% of full scale (at 77°F/25°C).
Temperature coefficient: 0.004% of full scale per °C (typical value).
Maximum voltage drop: <30V at 25mA, ensuring stable signal transmission.

3. Application Fields

Power Industry: Used for vibration monitoring and protection of generators, steam turbines, and wind turbine generators.
Petrochemical Industry: Monitors the operating status of critical equipment (e.g., compressors, pumps) to prevent equipment failures.
Manufacturing Industry: Suitable for vibration analysis of rotating machinery such as fans, coal mills, and gearboxes.
Other Fields: Rotating mechanical equipment in industries like iron and steel, metallurgy, and chemical engineering.