Overview
The Bently Nevada 3500/40M-01-00 Proximitor Monitor is a four-channel machinery protection monitor designed for the 3500 Machinery Protection System. It accepts signals from Bently Nevada proximity transducers (such as 3300 XL and other compatible Proximitor® systems), conditions the signals into vibration and position measurements, and continuously compares them against configurable alarm setpoints for machinery protection. It complies with the requirements of API 670 for continuous online monitoring of critical rotating equipment.
Ordering Code Breakdown
| Code | Description |
|---|
| 3500/40M | Four-channel Proximitor Monitor |
| 01 | Proximitor I/O Module with Internal Terminations |
| 00 | No Hazardous Area Approval |
The 01-00 configuration includes an internal termination I/O module and no hazardous-area certification.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model | 3500/40M-01-00 |
| Product Type | Proximitor Monitor |
| Monitor Channels | 4 |
| Compatible Inputs | Bently Nevada proximity transducers |
| Rack Compatibility | 3500 Machinery Protection System |
| I/O Module | Internal Terminations |
| Power Consumption | Approximately 7 W (typical) |
| Transducer Supply | -24 VDC |
| Operating Temperature | -30°C to +65°C (with standard I/O module) |
| Storage Temperature | -40°C to +85°C |
| Humidity | 95%, non-condensing |
| Dimensions | Approximately 241.8 × 24.4 × 241.3 mm |
| Weight | Approximately 0.9 kg |
| Standard Compliance | API 670 |
Typical Applications
The 3500/40M-01-00 is widely used for protecting and monitoring:
-
Steam turbines
-
Gas turbines
-
Centrifugal compressors
-
Pumps
-
Electric motors
-
Generators
-
Blowers and fans
-
Gearboxes
Key Features
Four Independent Monitoring Channels
Provides continuous monitoring of up to four proximity transducer inputs for machinery protection and diagnostics.
API 670 Compliance
Designed to satisfy the requirements of API Standard 670 for critical rotating machinery monitoring.
Programmable Alarm Setpoints
Supports configurable Alert and Danger alarm thresholds for each monitored parameter, enabling automatic protection responses.
Buffered Outputs
Front-panel buffered outputs allow connection of portable analyzers and diagnostic equipment without interrupting machine protection.
Flexible Transducer Compatibility
Compatible with Bently Nevada proximity transducer systems, including:
- 3300 XL 8 mm
-
3300 XL 11 mm
-
3300 XL NSv
-
Other supported Proximitor® systems
Frequently Asked Questions
1. What does the 3500/40M monitor do?
It receives signals from proximity transducers, converts them into vibration and shaft position measurements, and compares them against configured alarm limits to protect rotating machinery.
2. What does the "01" option indicate?
It specifies a Proximitor I/O Module with Internal Terminations.
3. What does the "00" option indicate?
It indicates no hazardous-area approvals.
4. How many channels does the monitor support?
The monitor provides four independent input channels.
5. Which measurements can it perform?
Depending on configuration, it supports:
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Radial vibration
-
Thrust position
-
Differential expansion
-
Eccentricity
-
REBAM
6. Is the monitor compatible with 3300 XL proximity probes?
Yes. It is designed to work with compatible Bently Nevada Proximitor® transducer systems, including the 3300 XL family.
7. Does it meet API 670?
Yes. The 3500 System, including the 3500/40M monitor, is designed to meet API 670 requirements for machinery protection.
8. Where is the 3500/40M commonly installed?
It is installed in 3500 Machinery Protection System racks used for continuous online monitoring of critical rotating equipment in oil & gas, power generation, petrochemical, mining, and other heavy industrial facilities.
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