



Precision Signal Extension Cable for Advanced Machinery Protection Systems
The Bently Nevada 21747-245-00 Pre-Amplifier Probe Extension Cable is a specialized cable assembly designed to provide dependable signal transmission between proximity sensing components and monitoring electronics in industrial machinery protection applications. Built for use within Bently Nevada proximity transducer systems, this extension cable helps maintain measurement accuracy and signal stability when additional installation distance is required.
With its extended cable configuration, the 21747-245-00 supports flexible equipment installation while preserving the performance of non-contact eddy current measurement systems. It is engineered for demanding rotating equipment environments where reliable vibration, shaft position, and displacement monitoring are essential for predictive maintenance and asset protection. Bently Nevada proximity systems use probe, extension cable, and Proximitor components together to measure both static and dynamic distances between the probe tip and the monitored shaft surface.
Technical Specifications
| Parameter | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 21747-245-00 |
| Product Type | Pre-Amplifier Probe Extension Cable |
| Cable Length | 24.5 ft (7.5 m) |
| Cable Configuration | Standard Extension Cable |
| Compatible System | Bently Nevada 7200 Series Proximity Transducer System |
| Signal Type | Proximity Probe Signal Transmission |
| Measurement Technology | Eddy Current Non-Contact Sensing |
| Cable Construction | Shielded Industrial Cable |
| Application | Shaft Vibration, Position, and Displacement Monitoring |
| Installation Type | Machinery Monitoring System Integration |
| Dimensions | Approx. 7500 × 8 × 8 mm |
| Weight | Approx. 0.35 kg |
Industrial Applications
The 21747-245-00 extension cable is designed for critical machinery applications where dependable signal transmission is required.
- Steam Turbine Condition Monitoring
- Gas Turbine Protection Systems
- Centrifugal Compressor Monitoring
- Industrial Pump Diagnostics
- Generator Shaft Position Measurement
- Motor Vibration Analysis
- Refinery Rotating Equipment
- Petrochemical Processing Units
- Power Plant Machinery
- Heavy Industrial Automation Systems
Technical FAQs
1. What is the main function of the Bently Nevada 21747-245-00?
The cable extends the connection between the proximity probe assembly and the monitoring electronics, allowing greater installation flexibility while maintaining measurement performance.
2. Which monitoring systems are compatible with this cable?
The 21747 series extension cables are commonly used with Bently Nevada 7200 Series proximity transducer systems for non-contact displacement measurement applications.
3. What does the 245 designation indicate?
The model designation represents the extended cable length configuration of approximately 24.5 feet (7.5 meters).
4. What type of signals does this cable transmit?
It transmits proximity measurement signals used for monitoring shaft vibration, radial displacement, and position changes in rotating machinery.
5. Why is cable shielding important?
Shielding helps reduce electromagnetic interference and electrical noise, improving signal quality in industrial environments with motors, generators, and power equipment.
6. What measurement technology does the connected system use?
The compatible Bently Nevada proximity systems operate using eddy current sensing technology to measure the distance between the probe tip and the target surface.
7. Where is this extension cable commonly installed?
It is commonly used in power generation, oil and gas, petrochemical, marine, and manufacturing facilities with critical rotating equipment.
8. Can this cable support continuous machinery monitoring?
Yes. It is designed for permanent installation in machinery protection systems where reliable signal transmission is required.
9. What are the dimensions and weight of the cable assembly?
The cable assembly measures approximately 7500 × 8 × 8 mm and weighs approximately 0.35 kg, depending on packaging and connector configuration.
10. Why choose the 21747-245-00 extension cable?
Its extended reach, compatibility with Bently Nevada monitoring platforms, and dependable signal performance make it a practical solution for improving machinery monitoring reliability and reducing unexpected equipment downtime.