BENTLY 133442-01 Tachometer & Vibration Monitoring I/O Module

Product Overview

The BENTLY 133442-01 is a high-performance dual-function I/O module purpose-built for the renowned BENTLY Nevada 3500 Series Machinery Protection System. This module plays a critical role in safeguarding critical rotating machinery by providing precise, real-time monitoring of shaft speed, rotor acceleration, and rotational direction. By integrating these essential tachometer functions with advanced vibration monitoring capabilities, the BENTLY 133442-01 delivers a comprehensive solution for predictive maintenance and machine condition assessment. It accepts input signals from a variety of sensors, including proximity probes, magnetic pickups, and accelerometers, converting these raw analog signals into actionable digital data for the 3500 system’s central processing unit.

Engineered for reliability in the most demanding industrial environments, the BENTLY 133442-01 features a rugged design that withstands extreme temperatures, humidity, and mechanical vibration. Its internal terminal design significantly simplifies field wiring, reducing installation complexity while enhancing connection integrity and overall system reliability. As a cornerstone of the 3500 Series, the BENTLY 133442-01 seamlessly integrates with other modules, allowing for user-configurable alarm setpoints that provide immediate warning when critical parameters deviate from normal operating ranges. This capability is essential for preventing catastrophic equipment failures, minimizing costly downtime, and optimizing maintenance schedules. Whether deployed in power generation, oil and gas, or heavy manufacturing, the BENTLY 133442-01 provides the data integrity and operational intelligence needed to protect high-value assets and extend the service life of rotating machinery.

Category: FUJI

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Description

Technical Specifications

Parameter Name	Parameter Value
Product Model	133442-01
Manufacturer	Bently Nevada (Baker Hughes)
Product Type	Tachometer / Vibration Monitoring I/O Module with Internal Terminals
Series	3500 Series Machinery Protection System
Input Channels	2 dedicated channels for tachometer inputs; supports up to 8 analog/digital inputs for general monitoring
Compatible Sensors	Proximity probes, magnetic pickups, accelerometers -5 -8
Input Signal Range	+10.0 V to -24.0 V DC (module limits signals outside this range) -3 -5
Input Impedance	20 kΩ (standard), 40 kΩ (TMR configuration), 7.15 kΩ (internal barrier) -3
Maximum Speed Range	99,999 rpm -8
Input Frequency Range	0.0167 Hz to 20 kHz -8
Module Power Consumption	5.8 W, typical -3
Power Supply Voltage	18–36 V DC -5 -6
Operating Temperature	-30°C to +65°C (ambient); Extended range: -40°C to +85°C for storage -1 -5 -8
Communication Protocols	Modbus TCP/IP, RS-232, RS-485 -2 -5
Certifications	CE, UL, SIL 2 compliance, IECEx, ATEX for hazardous areas -1 -5
Physical Dimensions	220 mm × 110 mm × 45 mm (alternate spec: 160 mm × 160 mm × 120 mm) -3 -5
Weight	Approximately 0.8 kg -3
Mounting	Occupies one full-height rear slot in a 3500 Series rack -3

Main Features and Advantages

The BENTLY 133442-01 distinguishes itself through its unique dual-function capability, simultaneously monitoring both rotational speed and vibration parameters. This integrated approach eliminates the need for separate dedicated modules, reducing system complexity, saving rack space, and lowering overall costs while providing a more holistic view of machinery health.

High-precision speed measurement lies at the core of the BENTLY 133442-01. Utilizing advanced signal conditioning and data conversion technology, it accurately captures signals from proximity probes and magnetic pickups, delivering reliable data for critical parameters like shaft speed, rotor acceleration, and rotational direction. This precision is vital for detecting subtle changes that may indicate the early onset of mechanical faults, such as bearing wear, imbalance, or misalignment.

The module’s internal terminal design is a significant advantage, drastically simplifying field wiring compared to models requiring external termination panels. This reduces the risk of wiring errors, minimizes the number of external connection points vulnerable to environmental factors, and expedites installation, which translates directly to lower commissioning costs.

Programmable alarm functionality enhances the BENTLY 133442-01‘s value as a protective device. Users can configure custom setpoints for overspeed, underspeed, acceleration, and reverse rotation. When these thresholds are breached, the module generates an immediate alarm, enabling rapid operator intervention and preventing potentially catastrophic equipment damage -5 -8. Furthermore, the module can be configured to supply conditioned Keyphasor® signals to the 3500 rack’s backplane, potentially eliminating the need for a separate Keyphasor® module in certain system configurations -3 -8. Its robust design, certified for harsh environments and hazardous locations, ensures dependable operation in power plants, offshore platforms, and chemical.