Products Description

The Bently Nevada 135137-01 is a rear-mounted Position I/O Module designed for the 3500/45 Position Monitor. It provides internal termination points for Proximitor Sensor, Rotary Position Transducer (RPT), and DC Linear Variable Differential Transformer (DC LVDT) signals.
Installed in the full-height rear slot directly behind the 3500/45 monitor, the module transfers field signals to the monitor for conditioning, measurement and alarm processing. Depending on the connected transducer and channel configuration, the system can monitor axial position, differential expansion, ramp differential expansion, complementary differential expansion, case expansion or valve position.
Key Features
- Designed for the Bently Nevada 3500/45 Position Monitor
- Provides internal field-wiring terminations
- Accepts connections from Proximitor Sensors
- Supports Rotary Position Transducers
- Supports DC LVDT inputs
- Handles up to four position measurement channels

Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Part number | 135137-01 |
| Product type | Position I/O Module |
| Termination type | Internal terminations |
| Compatible monitor | 3500/45 Position Monitor |
| Installation location | Rear of the 3500 rack |
| Proximitor/RPT input impedance | 10 kΩ |
| DC LVDT input impedance | 1 MΩ |
| Proximitor/RPT power supply | −24 VDC from the monitoring system |
| DC LVDT power supply | +15 VDC |
| Typical system power consumption | 7.7 W when the 3500/45 uses Position I/O |
| Recorder output | 4–20 mA, proportional to monitor full scale |
| Recorder load resistance | 0–600 Ω |
| Recorder voltage compliance | 0–12 VDC across the load |
| Recorder resolution | 0.3662 µA per bit |
| Recorder update rate | 100 ms or less |
| Dimensions | 241.2 × 24.4 × 99.1 mm |
| Weight | 0.45 kg |
| Operating temperature | −30°C to +65°C |
| Storage temperature | −40°C to +85°C |
| Relative humidity | 95%, non-condensing |
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About PLC Export
PLC Export supplies worldwide industrial automation equipment and spare parts. We stock PLC, HMI, drive and module parts for modern and legacy systems. Every item is fully inspected before delivery. Relying on global sourcing and efficient logistics, we help clients lower maintenance expenses and sustain stable production.
Application Areas
Competitive advantage
The company conducted a competitive advantage analysis to identify its strengths and weaknesses compared to its rivals.
Steam turbines
Connects proximity transducer systems used for thrust-position and differential-expansion monitoring.
01
Gas turbines
Provides rear I/O termination for compatible axial-position and valve-position transducers.
02
Turbine differential expansion
Interfaces with 25 mm, 35 mm and 50 mm extended-range Proximitor systems supported by the 3500/45.
03
Case expansion monitoring
Accepts compatible DC LVDT signals used to measure thermal movement of machine casings.
04
Valve-position monitoring
Connects compatible Rotary Position Transducers for monitoring valve movement.
05
FAQ
Q1: What is the Bently Nevada 135137-01?
Q2: Which transducers can be connected to the 135137-01?
Q3: Does the 135137-01 operate as a standalone monitor?
Q4: Does this module require an external termination block?
Q5: Where is the 135137-01 installed?
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