Four-Channel Machinery Protection Monitor for Proximity and Seismic Transducers
The Bently Nevada 3500/42-06-00 Proximitor Seismic Monitor is a four-channel monitoring module for the 3500 Machinery Protection System. It accepts inputs from both proximity probes and seismic transducers, conditions the signals, calculates vibration and position parameters, and continuously compares measured values against user-configured alarm setpoints to provide machinery protection and condition monitoring.
The 3500/42 monitor is programmable using the 3500 Rack Configuration Software and can simultaneously monitor a wide range of machinery parameters, including radial vibration, thrust position, shaft absolute vibration, differential expansion, velocity, acceleration, eccentricity, and REBAM.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model | 3500/42 |
| Part Number | 3500/42-06-00 |
| Product Type | Proximitor Seismic Monitor |
| Monitor Channels | 4 |
| Rack Compatibility | Bently Nevada 3500 Machinery Protection System |
| Input Types | Proximity probes, Velomitor® sensors, accelerometers, velocity transducers |
| Typical Power Consumption | Approximately 7.7 W |
| Buffered Outputs | One buffered output per channel |
| Recorder Output | 4–20 mA per channel |
| Configuration | Via 3500 Rack Configuration Software |
| Compliance | API 670 compatible applications |
Monitoring Functions
The 3500/42 can be configured to monitor:
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Radial shaft vibration
-
Shaft absolute vibration
-
Thrust position
-
Differential expansion
-
Eccentricity
-
Acceleration
-
Velocity
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REBAM (Rolling Element Bearing Activity Monitor)
-
Circular Acceptance Region
Channels are programmed in pairs, allowing two different measurement functions to operate simultaneously.
Key Features
Four Independent Monitoring Channels
Provides continuous monitoring of up to four machinery signals with configurable alarm and danger setpoints.
Supports Multiple Sensor Types
Compatible with:
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Proximitor® systems
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Velomitor® velocity sensors
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Accelerometers
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Velocity transducers
This flexibility allows one monitor to support a variety of rotating equipment applications.
Machinery Protection
Continuously compares measured values with configurable Alert and Danger limits and communicates alarm status to the 3500 rack.
Buffered Outputs
Each channel provides a buffered transducer output for portable analyzers and diagnostic equipment without disturbing the protection system.
4–20 mA Outputs
Each channel includes an independent recorder output for connection to DCS, PLC, or SCADA systems.
API 670 Applications
Designed for critical rotating machinery protection in accordance with applications requiring API 670 functionality.
Frequently Asked Questions
1. What is the primary function of the 3500/42-06-00?
It provides continuous machinery protection by monitoring vibration and position signals from proximity and seismic transducers while generating alarms when configured limits are exceeded.
2. How many channels does it support?
The monitor has four independent input channels.
3. What does the "06" option indicate?
The 06 option specifies an I/O module with internal barriers, internal terminations, and four Velomitor inputs.
4. What does the "00" suffix mean?
The 00 approval option indicates the standard version without additional hazardous-area or country-specific approvals. For installations requiring regional certifications, other approval options (such as CN) are available.
5. Which sensors are compatible?
It accepts signals from:
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Proximitor® proximity transducer systems
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Velomitor® sensors
-
Accelerometers
-
Velocity transducers
6. Can it be configured for different measurement types?
Yes. Using the 3500 Rack Configuration Software, each channel pair can be configured for different vibration or position measurements.
7. Does the monitor provide buffered outputs?
Yes. Each channel includes a buffered transducer output for diagnostic measurements.
8. Is it compatible with the 3500 Machinery Protection System?
Yes. The 3500/42-06-00 is designed specifically for installation in the Bently Nevada 3500 Machinery Protection System.
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