Description
Description
The Bently Nevada 3500/42M (Order Code 140734-02) is a four-channel monitor module designed for critical machinery protection. It serves as a core component of the 3500 rack-based monitoring system, accepting inputs from both proximity and seismic transducers. The module conditions these signals to provide essential vibration and position measurements, which are then compared against user-programmable Alert and Danger setpoints to ensure safe machine operation.
Features
- Four-channel monitoring capability for high-density rack configurations.
- Compatible with a wide range of proximity and seismic transducers.
- Provides continuous machinery protection through real-time signal processing.
- Configurable Alert and Danger setpoints for each channel.
- Includes buffered transducer outputs for external signal analysis and diagnostics.
- Supports integration with 3500 system relay modules for automated machinery tripping.
Applications
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Oil and Gas: Monitoring of large centrifugal and reciprocating compressors, turbine expanders, and pump sets in refineries and LNG facilities.
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Power Generation: Vibration monitoring for steam turbines, gas turbines, generators, and boiler feed pumps.
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Petrochemical: Protection for mixers, extruders, and large industrial fans.
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Heavy Industry: Monitoring of critical assets such as large ball mills, blast furnace blowers, and rolling mills.
Technical Specifications
| Model |
3500/42M |
| Order Code |
140734-02 |
| Channels |
4 |
| Transducer Power Supply |
-24 Vdc |
| Output Impedance |
550 Ohm |
| Voltage Compliance |
0 to +12 Vdc range across load |
| Gap Filter |
-3 dB at 0.09 Hz |
| Smax Accuracy |
Within +/- 5% maximum |
| Tariff Code |
8537101190 |
Installation Guidelines
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System Integration: This module is designed for installation in a standard Bently Nevada 3500 rack. Ensure the rack is powered down before inserting or removing the module to prevent electrical damage.
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Handling: Use proper ESD (Electrostatic Discharge) protection when handling the module to avoid damage to sensitive internal components.
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Wiring: Use shielded cabling for all transducer inputs to minimize EMI/RFI interference. Ensure proper grounding of cable shields at the rack entry point.
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Configuration: Use the 3500 Rack Configuration Software to set up channel parameters, alarm setpoints, and time delays (1 to 60 seconds) prior to full system operation.
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Cooling: Ensure the 3500 rack has adequate ventilation to maintain operating temperatures within the specified range for the system.
FAQs
What is the 3500/42M?
The Bently Nevada 3500/42M Proximitor Seismic Monitor is a 4-channel module designed for machinery protection, accepting inputs from proximity and seismic transducers to monitor vibration, position, and acceleration.
What does the 3500/42M monitor?
It monitors machinery parameters such as radial vibration, REBAM (Rolling Element Bearing Activity Monitoring), thrust position, shaft absolute, acceleration, velocity, and eccentricity.
Can the 3500/42M be used for SIL 3 applications?
Yes, Functional Safety (FS) versions of the 3500/42M can be used in a 2-out-of-3 (TMR) configuration for SIL 3 safety functions.
Does 3500/42M provide buffered outputs?
Yes, it provides buffered transducer outputs for each channel to allow for external signal analysis and troubleshooting.
