Introduction & Technical Overview
The Epro PR6423/003-040 is an 8 mm eddy current displacement sensor designed for high-precision, non-contact vibration and position measurement in rotating machinery. It is commonly used as part of proximity measurement systems in turbines, compressors, pumps, and other critical rotating assets where continuous condition monitoring is required.
The sensor operates based on eddy current principle, where changes in distance between the probe tip and conductive target surface are converted into a proportional electrical signal. This enables highly stable measurements even under harsh industrial environments such as high temperature, oil contamination, and mechanical vibration.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Epro |
| Model | PR6423/003-040 |
| Sensor Type | Eddy Current Displacement Sensor |
| Measurement Principle | Non-contact eddy current |
| Sensor Head Diameter | 8 mm |
| Measurement Target | Conductive metals (e.g., steel) |
| Application | Vibration & displacement monitoring |
| Operating Temperature | -35°C to 180°C |
| Mounting Type | Proximity probe system |
| Output Type | Requires compatible signal conditioner |
| Dimensions | Probe length dependent on configuration |
| Weight | 0.1 kg (0.22 lb) |
Applications
This sensor is widely deployed in condition monitoring and protection systems for industrial rotating equipment. It is typically used to measure shaft displacement, vibration amplitude, eccentricity, and axial position.
In power generation plants, it is installed on steam and gas turbines for real-time rotor monitoring. In oil and gas facilities, it is used in compressors and pumps to detect early mechanical wear or misalignment. It is also applied in predictive maintenance systems where long-term trend analysis is required to prevent unplanned downtime.
Advantages
The PR6423/003-040 offers high measurement stability due to its eddy current operating principle, which is insensitive to oil, dust, and non-conductive contamination. Its compact 8 mm probe design allows installation in tight mechanical spaces without compromising accuracy.
The sensor provides excellent linearity and repeatability, making it suitable for critical machinery protection systems. It also supports wide temperature tolerance when paired with compatible extension cables and signal conditioners, ensuring reliable performance in demanding industrial environments.
Technical FAQs
1. What type of measurement principle does this sensor use?
It uses eddy current technology for non-contact displacement measurement.
2. Can it measure through oil or contaminants?
Yes, it is largely unaffected by oil, dust, and non-conductive contamination.
3. What parameters can it measure?
It measures shaft vibration, displacement, axial position, and eccentricity.
4. Is it suitable for high-speed rotating machinery?
Yes, it is designed for high-frequency dynamic vibration monitoring.
5. Does it require contact with the target surface?
No, it operates fully without physical contact.
6. What materials can it measure against?
It is typically calibrated for conductive metals such as steel.
7. Can it be used in turbine monitoring systems?
Yes, it is widely used in steam and gas turbine protection systems.
8. Does installation distance affect accuracy?
Yes, proper gap calibration is required for accurate linear response.
9. Is it compatible with standard eddy current monitoring systems?
Yes, it is designed for use with Epro signal conditioning systems.
10. What is its primary industrial use case?
It is mainly used for predictive maintenance and machinery protection.
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