Four-Channel Machinery Protection Monitor for Proximity Transducers
The Bently Nevada 3500/40-01-00 is a 3500/40M Proximitor Monitor, a four-channel monitoring module designed for the Bently Nevada 3500 Machinery Protection System. It accepts signals from Bently Nevada proximity transducers (such as the 3300 XL series), conditions those signals into vibration and position measurements, and compares them against user-configurable alarm setpoints to provide continuous machinery protection and condition monitoring.
The monitor is widely used on critical rotating equipment including steam turbines, gas turbines, compressors, pumps, and generators, where continuous monitoring of shaft vibration and position is essential.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model | 3500/40M Proximitor Monitor |
| Part Number | 3500/40-01-00 |
| Product Type | Four-channel Machinery Protection Monitor |
| Number of Channels | 4 |
| Compatible Sensors | Bently Nevada proximity transducers (3300 XL and compatible systems) |
| Measurements | Radial Vibration, Thrust Position, Differential Expansion, Eccentricity, REBAM® |
| Configuration | Programmable using 3500 Rack Configuration Software |
| Typical Power Consumption | Approximately 7 W |
| Transducer Supply | -24 VDC |
| Dimensions | 24.18 × 2.44 × 24.13 cm (9.50 × 0.96 × 9.52 in.) |
| Weight | Approximately 0.91 kg |
Typical Applications
The 3500/40-01-00 is commonly installed on:
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Steam turbines
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Gas turbines
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Centrifugal compressors
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Pumps
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Electric motors
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Generators
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Industrial fans
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Process compressors
Typical monitoring functions include:
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Shaft radial vibration
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Axial (thrust) position
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Differential expansion
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Rotor eccentricity
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Continuous machinery protection
Key Features
Four Independent Monitoring Channels
The module accepts up to four proximity transducer inputs. Channels are configured in pairs, allowing the monitor to perform up to two different machinery monitoring functions simultaneously.
Multiple Machinery Measurements
Each channel can be configured for applications including:
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Radial vibration
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Thrust position
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Differential expansion
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Eccentricity
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REBAM® (Rolling Element Bearing Activity Monitor)
Machinery Protection
The monitor continuously compares measured values against programmable Alert and Danger alarm setpoints, providing outputs that can activate alarm annunciation and protective relay logic.
Flexible Configuration
All monitoring functions, alarm levels, and channel assignments are configured using the 3500 Rack Configuration Software, allowing adaptation to different machinery types and operating requirements.
Integration with the 3500 System
The module operates within the 3500 Machinery Protection System, integrating with power supplies, rack interfaces, relay modules, communication gateways, and operator software.
Frequently Asked Questions
1. What is the purpose of the 3500/40-01-00?
It continuously monitors vibration and shaft position using proximity transducers while providing alarm-based machinery protection.
2. How many channels does the monitor support?
It supports four independent input channels.
3. Which sensors are compatible?
It accepts inputs from Bently Nevada proximity transducers, including the 3300 XL series and other compatible Proximitor® systems.
4. What does the "01" option indicate?
It specifies a Proximitor I/O Module with Internal Terminations.
5. What does the "00" approval option mean?
It indicates no hazardous-area approval. Other approval options are available for certified installations.
6. Which monitoring functions are available?
The module supports radial vibration, thrust position, differential expansion, eccentricity, and REBAM® monitoring.
7. Is the monitor programmable?
Yes. Configuration is performed using 3500 Rack Configuration Software, allowing measurement type and alarm settings to be customized.
8. Is it part of the 3500 Machinery Protection System?
Yes. It is one of the primary vibration monitoring modules within the 3500 Machinery Protection System.
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