Description
The Bently Nevada 140471-01 is a Prox/Velom I/O module designed for use with the 3500/42M Proximitor/Seismic Monitor system. This module serves as the physical interface between field-mounted transducers and the monitor signal conditioning circuitry within a 3500 rack. It features internal termination circuitry, eliminating the need for external termination blocks.
Features
- 4-channel input capability for proximity and seismic transducers.
- Provides power, common, signal, and shield connections for each transducer channel.
- Internal termination design for simplified field wiring.
- Supports channel pair programming for monitoring functions such as radial vibration, thrust position, acceleration, or shaft absolute measurement.
- Routes transducer signals to the main monitor module for alarm comparison and static value generation.
- Includes recorder outputs and OK relay contacts for system status monitoring.
Applications
- Upstream Production Platforms: Protection for offshore/FPSO pumps, compressors, and turbines.
- Refineries: Monitoring of FCCU/H2 compressors and crude pumps.
- LNG Plants: Safeguarding refrigeration and methane compressors.
- Power Generation: Protection for turbines, generators, and boiler feed pumps.
- Hydroelectric Facilities: Monitoring of low-speed alignment and thrust for hydro-turbines.
Technical Specifications
| Model |
140471-01 |
| Function |
Prox/Velom I/O Module |
| Terminations |
Internal |
| Probe Excitation |
-24V DC, 4-20 mA |
| Gap Voltage |
-2V to -18V DC |
| Frequency Response |
0.5 Hz to 10 kHz |
| Acceleration Range |
0-10 g RMS |
| Humidity |
5-95% RH (non-condensing) |
Installation Guidelines
- Ensure the 3500 rack power supply is de-energized before inserting or removing any module to prevent damage from transient voltages.
- Locate the I/O slot at the rear of the 3500 rack that corresponds to the front-mounted 3500/42M monitor module.
- Align the top and bottom edges of the 140471-01 module with the rack guide rails.
- Slide the module into the slot until the connectors are fully seated against the backplane.
- Verify that all field wiring is properly secured to the internal terminals according to the system wiring diagram.
FAQs
What is the 140471-01?
The Bently Nevada 140471-01 is a 4-channel I/O module with internal terminations, designed for the 3500/42M Proximitor/Seismic Monitor system to provide machinery protection and vibration monitoring.
What types of sensors does the 140471-01 support?
It supports proximity probes for radial vibration and thrust position, as well as velocity and acceleration sensors for case vibration monitoring.
Can I use external termination blocks with this module?
No, the 140471-01 is specifically designed with internal terminations; external termination blocks are not compatible with this specific model.