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- PR6423/015-000-CN
- 8mm Eddy Current Sensor
- Germany
- 8 mm
- 0.1 kg
- Xiamen, China
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Product Overview
The Epro PR6423/015-000-CN is an 8 mm eddy current sensor used for non-contact measurement of relative movement between a rotating shaft and the sensing point. It belongs to the PR6423 Series and is used as a field sensing element in machinery vibration, displacement, and position monitoring systems.
The sensor operates without physical contact with the monitored shaft, making it suitable for rotating equipment where continuous measurement is required without introducing mechanical wear at the sensing point. It can be installed on machinery such as turbines, compressors, pumps, generators, and motors.
During operation, the probe is positioned toward a suitable conductive target. Changes in the target-to-sensor relationship alter the electrical response of the eddy current sensing circuit, allowing the associated monitoring equipment to determine shaft movement.
The PR6423/015-000-CN is normally used with compatible signal-conditioning electronics and a machinery monitoring system. Probe alignment, installation gap, mounting rigidity, cable condition, and target characteristics all contribute to the quality of the resulting measurement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Epro |
| Model | PR6423/015-000-CN |
| Product Family | PR6423 Series |
| Product Type | 8mm Eddy Current Sensor |
| Primary Function | Non-contact shaft displacement measurement |
| Sensing Principle | Eddy Current |
| System Role | Rotating machinery displacement and vibration sensor |
| Typical Application | Turbine, compressor, pump, generator, and motor monitoring |
| Sensor Head Diameter | 8 mm |
| Weight | 0.1 kg |
Product Features
- 8 mm eddy current sensor for rotating machinery monitoring
- Non-contact detection of conductive target movement
- Suitable for shaft displacement and position measurement
- Supports vibration-related monitoring applications
- Part of the Epro PR6423 Series
- Suitable for continuous machinery condition monitoring
- Interfaces with compatible eddy current signal-conditioning equipment
- Applicable to turbines, compressors, pumps, generators, and motors
- Suitable for machinery protection and monitoring architectures
Working Principle
The PR6423/015-000-CN uses an eddy current sensing field to detect changes in the distance between the probe and a conductive target. When the rotating shaft moves relative to the fixed sensor, the electromagnetic response of the sensing circuit changes.
The associated signal-conditioning electronics interpret this response and produce a usable measurement signal for the machinery monitoring system. Depending on the installation, the measurement can be used to observe radial movement, axial displacement, shaft position, or vibration-related motion.
Conductive Shaft / Target → PR6423/015-000-CN Sensor → Eddy Current Signal Converter → Machinery Monitoring System → Alarm / Protection
The probe provides the physical measurement while downstream electronics perform signal conditioning and monitoring. The sensor itself does not independently determine alarm limits or initiate machine shutdown.
Role in an Eddy Current Machinery Monitoring Architecture
The PR6423/015-000-CN occupies the field sensing stage of an eddy current machinery monitoring system. It converts relative mechanical movement at the monitored target into a signal that can be processed by compatible measurement electronics.
Rotating Shaft → PR6423/015-000-CN → Signal Converter → Monitoring Module → Alarm / Trip → Machine Protection
| System Element | Function |
|---|---|
| Rotating Shaft | Provides the conductive target being monitored |
| PR6423/015-000-CN | Detects relative movement between the probe and target |
| Eddy Current Signal Converter | Conditions the sensor response for downstream monitoring |
| Monitoring Module | Evaluates shaft displacement and vibration-related signals |
| Alarm System | Indicates abnormal machinery conditions |
| Protection Logic | Determines the required protective response |
| Shutdown / Trip System | Initiates machine protection when configured conditions occur |
The arrangement separates physical displacement sensing from signal processing and machine protection, allowing each stage to perform its specific function within the overall monitoring chain.
Industrial Applications
| Application | Typical Use |
|---|---|
| Steam Turbines | Shaft displacement and vibration monitoring |
| Gas Turbines | Rotor movement and machinery protection |
| Compressors | Shaft position and radial movement monitoring |
| Pumps | Non-contact shaft displacement measurement |
| Generators | Rotor movement and vibration monitoring |
| Motors | Shaft condition monitoring |
| Expanders | High-speed rotating machinery monitoring |
| Industrial Turbomachinery | Continuous shaft monitoring |
| Process Plants | Critical rotating equipment protection |
| Power Generation | Turbine and generator condition monitoring |
Installation and Maintenance
- Verify the complete PR6423/015-000-CN model designation before installation.
- Confirm compatibility with the existing PR6423 signal-conditioning and monitoring arrangement.
- Isolate the monitored machinery before installing or replacing the sensor.
- Inspect the probe head for physical damage or contamination.
- Check the mounting arrangement and ensure that the sensor can be positioned correctly toward the conductive target.
- Establish the probe-to-target gap according to the requirements of the associated measurement system.
- Maintain correct alignment between the sensor and the monitored shaft or target surface.
- Inspect sensor cables, connectors, and terminations for damage or loose connections.
- Verify that the signal converter and monitoring equipment are correctly connected.
- Check the sensor output during commissioning and confirm stable measurement behavior.
- Investigate abnormal readings by checking sensor position, target condition, mounting, wiring, and signal-conditioning electronics.
- After replacement, verify the complete measurement chain and confirm correct monitoring operation before returning the machinery to service.
Compatible System Components
| Component | Function |
|---|---|
| Epro PR6423 Series Signal Converter | Conditions the eddy current sensor response |
| Epro PR6423 Series Sensors | Provides non-contact displacement measurement |
| Proximity Extension Cable | Connects the sensor to associated electronics |
| Probe Mounting Hardware | Maintains sensor position relative to the monitored target |
| Machinery Monitoring Module | Evaluates shaft displacement and vibration information |
| Rotating Shaft / Rotor | Provides the conductive measurement target |
| Alarm System | Indicates abnormal machinery operating conditions |
| Machine Protection System | Performs configured protective actions |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Epro PR6423/014-010 | 8mm Eddy Current Sensor | Shaft displacement monitoring |
| Epro PR6423/014-030 | 8mm Eddy Current Sensor | Rotating machinery monitoring |
| Epro PR6423/014-040 | 8mm Eddy Current Sensor | Shaft movement measurement |
| Epro PR6423/014-121 | 8mm Eddy Current Sensor | Non-contact shaft monitoring |
| Epro PR6423/015-000-CN | 8mm Eddy Current Sensor | Rotating machinery displacement sensing |
| Epro PR6423/014-121+CON031 | Sensor + Signal Converter | Complete eddy current measurement chain |
| Epro PR6423 + CON021 | Sensor + Signal Converter | Machinery displacement monitoring |
| Epro PR6423 + CON031 | Sensor + Signal Converter | Eddy current signal conditioning |
Key Advantages
- Provides non-contact sensing of conductive shaft movement.
- Suitable for continuous rotating machinery monitoring.
- Supports shaft displacement, position, and vibration-related measurements.
- Fits into established PR6423 eddy current measurement architectures.
- Can be connected to compatible signal-conditioning and machinery protection equipment.
- Suitable for critical rotating equipment in industrial and power-generation applications.
Technical FAQs
What is the PR6423/015-000-CN used to monitor?
It is used to detect relative movement between the sensor and a conductive target, such as a rotating shaft. The resulting measurement can support shaft displacement, position, and vibration-related monitoring.
Why is an eddy current sensor suitable for rotating machinery?
Because the sensing method is non-contact, the probe can monitor shaft movement without physically contacting the rotating component. This is useful for continuous monitoring of high-speed machinery.
What should be checked if the PR6423/015-000-CN produces an unstable signal?
Check the probe-to-target gap, alignment, mounting condition, target surface, cable connections, and associated signal-conditioning electronics. These factors can affect the measurement before any sensor failure is assumed.
What needs to be verified when replacing this PR6423 sensor?
The complete sensor configuration should be matched to the existing installation, including the associated signal converter, mounting arrangement, wiring, and monitoring interface. The measurement chain should then be tested after replacement.