Bently 133442-01 Input module

1. Product Detailed Description

The 133442-01 module serves as the interface between speed sensors (transducers) and the 3500/50M Tachometer Monitor. Unlike standard modules that require external terminal blocks, this version features Internal Terminations, allowing sensors to be wired directly to the back of the rack, which saves space and simplifies installation.

It is a 2-channel module capable of processing signals from proximity probes or magnetic pickups. It can also provide conditioned Keyphasor® signals to the rack backplane, eliminating the need for a dedicated Keyphasor module in many configurations.

2. Product Parameters (Specifications)

3. Product Advantages

• Integrated Design: Internal terminations reduce the need for external hardware, lowering overall system cost and footprint.

• Versatile Monitoring: Supports shaft rotative speed, rotor acceleration, and rotor direction (reverse rotation).

• High Accuracy: Provides precise RPM measurements (±1 RPM for speeds up to 10,000 RPM) and peak-hold features for tracking maximum speeds.

• Keyphasor Functionality: Can supply conditioned phase reference signals to other modules in the 3500 rack.

• Robust Diagnostics: Includes "OK" status LEDs and internal self-tests to ensure signal integrity.

4. Cautions & Precautions

• Not for Control: This module is designed for monitoring and protection, not as a primary speed control or overspeed protection system.

• Wiring Safety: Ensure the power is off before connecting or disconnecting wires to the internal terminals to prevent short circuits.

• Signal Limits: Do not exceed the input voltage range (+10V to -24V). Signals outside this range will be clipped and may cause inaccurate readings.

• Magnetic Pickup Limits: Note that passive magnetic pickups require a minimum frequency (approx. 3.3 Hz) to provide a reliable signal.

5. Product Applications

The 133442-01 is used across industries where large rotating equipment is critical to operations:

• Power Generation: Steam and gas turbines, generators, and large motors.

• Oil & Gas: Centrifugal compressors, pumps, and expanders.

• Manufacturing: Large fans, blowers, and mixers.

• Water Treatment: High-capacity pumps and aerators.

Shipping Port: Xiamen, China

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