Bently Nevada 3500/40-03-01 Proximitor Monitor

The Bently Nevada 3500/40-03-01 Proximitor Monitor is a four-channel monitoring module designed to accept signals from Bently Nevada proximity transducers and process them into vibration and position measurements. It compares conditioned signals against user-programmable alarm setpoints. This configuration includes a Proximitor I/O module with internal barriers and internal terminations, together with the cNRTLus hazardous area approval option (Class 1, Division 2).

Key Features

• Four-channel input: Accepts signals from 1 to 4 proximity transducers.
• Multiple monitoring functions: Supports radial vibration, thrust position, eccentricity, differential expansion, and REBAM monitoring.
• Configurable alarms: Uses 3500 Rack Configuration Software to assign monitoring functions and configure alarm parameters for each channel.
• Internal barriers: The 03 I/O configuration incorporates internal barriers and internal terminations.
• Status indication: Front-panel OK, TX/RX, and Bypass LEDs indicate module condition, rack communication, and bypass status.
• Buffered outputs: Provides one coaxial buffered transducer output connector per channel, with short-circuit protection.

Technical Specifications

Monitoring Functions and Signal Processing

The 3500/40M processes proximity transducer signals to measure shaft vibration and mechanical position. Furthermore, its configurable channels allow one monitor to support different measurement functions according to the machinery monitoring requirements.

The available monitoring functions include:

• Radial Vibration: Measures shaft vibration relative to the proximity transducer reference.
• Thrust Position: Monitors axial shaft position to identify changes in thrust-related displacement.
• Eccentricity: Measures shaft eccentricity, including variations in shaft position during rotation.
• Differential Expansion: Monitors relative expansion between different parts of a machine.
• REBAM: Provides a dedicated monitoring function for REBAM measurements.

Meanwhile, the sensitivity options differ by measurement type. Therefore, the selected sensitivity must correspond to the transducer signal and the intended monitoring function.

I/O Configuration and Ordering Code

The complete model number 3500/40-03-01 identifies the monitor and its I/O and approval configuration.

The 03 configuration integrates the barriers and termination components within the I/O module. In addition, the 01 suffix identifies the specified hazardous area approval option. These details distinguish this version from configurations using external terminations or different approval options.

Front-Panel Indicators and Outputs

The front panel provides three LED indicators for operational status:

• OK: Indicates whether the Proximitor Monitor is operating properly.
• TX/RX: Indicates communication activity with other modules in the 3500 rack.
• Bypass: Indicates when the monitor is operating in Bypass Mode.

Furthermore, each channel provides a buffered transducer output through a coaxial connector. The outputs allow access to the transducer signals, and each connector includes short-circuit protection.

Frequently Asked Questions

Q: What is the difference between 3500/40-03-01 and other 3500/40M configurations?

A: The 03 option specifies a Proximitor I/O module with internal barriers and internal terminations. The 01 option specifies cNRTLus approval for Class 1, Division 2 hazardous locations. Other configurations may use different termination arrangements or approval options.

Q: How many proximity transducers can the 3500/40-03-01 monitor?

A: The monitor supports up to four proximity transducer signals, with each channel configurable for an available monitoring function through 3500 Rack Configuration Software.

Q: Which monitoring functions does this module support?

A: It supports radial vibration, thrust position, eccentricity, differential expansion, and REBAM monitoring. The selected function and sensitivity must match the intended measurement and transducer configuration.