Description
Bently 135137-01 Position Monitor Backplane
Product Dimensions:
1. Product Detailed Description
The 135137-01 module is an essential component of the Bently Nevada 3500 Series machinery protection system. Its primary role is to receive signals from position sensors, condition them, and pass them to the 3500/45 monitor for processing.
As an “Internal Termination” version, it allows for direct field wiring to the back of the 3500 rack, eliminating the need for external terminal blocks or specialized cables, which simplifies the overall system architecture and reduces installation footprint.
2. Product Parameters (Specifications)
| Parameter | Specification |
| Part Number | 135137-01 |
| Module Type | Position I/O Module (Internal Terminations) |
| Channels | 4 Independent Channels |
| Supported Transducers | Proximitors, Rotary Position Transducers (RPTs), DC LVDTs |
| Input Range | 0 to 10 V, 4 to 20 mA, or ±10 V (Configuration dependent) |
| Accuracy | Within ±0.25% of full-scale range |
| Alarm Delay | Alert: 1–60s; Danger: 0.1–60s |
| Dimensions | 241 mm x 24.4 mm x 99.1 mm |
| Weight | Approximately 0.44 kg (0.97 lbs) |
| Operating Temp | -30°C to +65°C (-22°F to +150°F) |
3. Product Advantages
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Reduced Complexity: The internal termination design removes the need for external junction boxes, saving space and reducing wiring errors.
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Multi-Function Monitoring: When paired with the 3500/45 monitor, it supports diverse measurements including Axial (Thrust) Position, Differential Expansion, Case Expansion, and Valve Position.
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High Reliability: Features built-in self-test and “OK” diagnostics that continuously verify the integrity of the transducers and field wiring.
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Flexible Programming: Channels are programmed in pairs, allowing the module to monitor two different types of position measurements simultaneously.
4. Cautions & Precautions
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Module Matching: Ensure this I/O module (135137-01) is used specifically with the 3500/45 Position Monitor. It is not compatible with standard vibration monitors.
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Transducer Compatibility: While it supports DC LVDTs, it does not support AC LVDTs (which require the 139554-01 module) or Rotary Potentiometers (which require the 139978-01 module).
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Installation Safety: Always de-energize the rack before inserting or removing the I/O module to prevent “hot-swap” damage to the backplane or sensors.
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Software Configuration: The module must be correctly configured using the 3500 Rack Configuration Software to match the specific transducer scale and units.
5. Product Applications
The 135137-01 is used to monitor critical mechanical clearances in large-scale industrial machinery:
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Steam Turbines: Monitoring thrust (axial) position and differential expansion to prevent rotor-to-stator contact.
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Gas Turbines: Tracking case expansion and valve positions for fuel and air control.
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Hydro Turbines: Measuring gate position and shaft alignment.
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Large Compressors: Monitoring axial movement of high-speed rotors in the oil and gas industry.
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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