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- PR6423/016-100
- 8mm Eddy Current Sensor
- Germany
- 8 mm
- 0.1 kg
- Xiamen, China
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Product Overview
The Epro PR6423/016-100 8mm Eddy Current Sensor is a non-contact displacement sensor used to monitor the relative position and movement of conductive targets in rotating machinery. It belongs to the PR6423 Series and is suitable for machinery monitoring arrangements where shaft movement must be measured without physical contact.
The sensor is commonly installed near a rotating shaft to detect changes in the distance between the sensing head and the conductive target. This measurement method is useful for observing radial shaft movement, axial displacement, shaft position, and vibration-related behavior in rotating equipment.
The PR6423/016-100 operates as the sensing element within a larger measurement chain. A compatible driver or signal-conditioning unit processes the sensor response and passes the resulting measurement to a machinery monitoring system, where the signal can be used for condition monitoring, alarm, or protection functions.
For field maintenance, the sensor mounting position and target relationship are particularly important. Probe gap, alignment, target surface condition, cable routing, and compatibility with the associated signal-conditioning equipment should all be checked when installing or replacing the sensor.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Epro |
| Model | PR6423/016-100 |
| Product Family | PR6423 Series |
| Product Type | 8mm Eddy Current Sensor |
| Primary Function | Non-contact displacement measurement |
| Sensing Principle | Eddy Current |
| System Role | Rotating machinery displacement sensing |
| Typical Application | Shaft vibration and position monitoring |
| Sensor Head Diameter | 8 mm |
| Weight | 0.1 kg |
Product Features
- PR6423 Series 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 of rotating equipment.
- Can be applied to radial and axial shaft movement monitoring.
- Works with compatible eddy current signal-conditioning equipment.
- Suitable for continuous machinery measurement applications.
- Applicable to turbines, compressors, generators, pumps, motors, and other rotating machinery.
- Requires controlled mounting and correct sensor-to-target positioning.
Working Principle
The PR6423/016-100 uses an eddy current sensing method to detect changes in the distance between the sensor and a conductive target. An electromagnetic field generated by the sensing element interacts with the target, and movement of the target changes the electrical response of the sensing circuit.
As a rotating shaft moves relative to the sensor, these changes are transferred to the associated driver or signal converter. The conditioned output can then be interpreted by the machinery monitoring system as displacement, position, or vibration-related information.
Rotating Shaft / Conductive Target → PR6423/016-100 → Signal Converter / Driver → Machinery Monitoring System → Alarm / Protection
The sensor does not independently perform machinery protection or final alarm processing. Measurement quality depends on the complete installation, including probe mounting, sensor-to-target gap, target material and geometry, cable condition, and compatible signal-conditioning equipment.
Role in an Epro Eddy Current Monitoring Architecture
The PR6423/016-100 occupies the field sensing stage of an eddy current monitoring channel. It converts relative mechanical movement between the sensor and conductive target into a corresponding electrical sensing response.
Rotating Machinery → PR6423/016-100 → Eddy Current Driver → Monitoring System → Alarm / Protection
| System Element | Function |
|---|---|
| Rotating Shaft | Provides the conductive target being monitored |
| PR6423/016-100 | Detects changes in target-to-sensor distance |
| Eddy Current Driver | Supplies the sensor interface and conditions its response |
| Monitoring System | Evaluates displacement, position, or vibration information |
| Alarm System | Indicates configured abnormal conditions |
| Protection System | Initiates configured protective actions |
The sensor should be evaluated together with the driver, cable, mounting arrangement, and monitoring system when diagnosing abnormal measurements.
Industrial Applications
| Application | Typical Use |
|---|---|
| Steam Turbines | Shaft displacement and position monitoring |
| Gas Turbines | Radial shaft movement monitoring |
| Turbo Compressors | Shaft vibration and displacement measurement |
| Generators | Rotor movement and position monitoring |
| Large Motors | Shaft condition monitoring |
| Pumps | Rotating machinery displacement monitoring |
| Expanders | High-speed shaft movement monitoring |
| Industrial Turbomachinery | Continuous shaft-position measurement |
| Process Plants | Critical rotating equipment protection |
Installation and Maintenance
- Confirm that the PR6423/016-100 is compatible with the intended Epro eddy current measurement system.
- Verify the associated driver, signal converter, monitoring system, and field wiring before installation.
- Isolate the monitored machinery and follow applicable safety procedures before working near rotating equipment.
- Inspect the sensor body and sensing head for mechanical damage or contamination.
- Ensure that the mounting arrangement securely holds the sensor without unwanted movement.
- Position the sensor correctly relative to the conductive shaft or target surface.
- Establish the required sensor-to-target gap according to the applicable monitoring-system requirements.
- Route the sensor cable to avoid excessive bending, mechanical stress, and avoidable electrical interference.
- Check connectors and terminations for secure attachment and signs of contamination or damage.
- Verify the sensor response through the associated signal-conditioning equipment after installation.
- Investigate unstable readings by checking probe position, target condition, cable integrity, and driver operation.
- After replacement, verify the complete measurement channel and confirm correct monitoring-system response before returning the machinery to normal operation.
Compatible System Components
| Component | Function |
|---|---|
| Epro PR6423 Series Driver | Provides the required sensor interface and signal handling |
| Eddy Current Signal Converter | Conditions the sensor measurement response |
| Proximity Extension Cable | Connects the sensor to associated electronics |
| Machinery Monitoring System | Processes displacement and vibration information |
| Monitoring Rack / Module | Receives and evaluates the conditioned signal |
| Alarm System | Indicates abnormal machinery conditions |
| Protection System | Generates configured alarm or shutdown responses |
| Rotating Shaft / Conductive Target | Provides the monitored target surface |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Epro PR6423 Series | Eddy Current Sensor Family | Rotating machinery displacement sensing |
| Epro PR6423/013 Series | 8mm Eddy Current Sensor | Shaft movement monitoring |
| Epro PR6423/014 Series | 8mm Eddy Current Sensor | Rotating machinery monitoring |
| Epro PR6423/015 Series | 8mm Eddy Current Sensor | Shaft displacement and position sensing |
| Epro PR6423/016 Series | 8mm Eddy Current Sensor | Conductive target displacement monitoring |
| Epro PR6423 Signal Converter | Eddy Current Signal Converter | Sensor signal conditioning |
| Epro CON021 | Eddy Current Signal Converter | PR6423 sensor signal interface |
| Epro CON031 | Eddy Current Signal Converter | PR6423 sensor signal interface |
Key Advantages
- Provides non-contact measurement of conductive target movement.
- Suitable for continuous shaft displacement and position monitoring.
- Supports vibration-related applications on critical rotating equipment.
- Integrates with compatible Epro driver and signal-conditioning equipment.
- Suitable for turbines, compressors, generators, motors, pumps, and other rotating machinery.
- Allows shaft movement to be measured without physical contact with the monitored target.
Technical FAQs
What is the role of the PR6423/016-100 in a complete monitoring channel?
It serves as the field sensing element that detects relative movement between the sensor and a conductive target. Signal conditioning and final monitoring functions are handled by the associated driver and machinery monitoring equipment.
Why is sensor mounting stability important for eddy current measurement?
The monitoring system measures relative distance between the sensor and target. If the sensor itself moves because of a loose mounting arrangement, that movement can appear as a change in shaft position and produce an incorrect measurement.
What should be considered when installing the sensor near a rotating shaft?
The sensor-to-target gap, alignment, target material, target geometry, mounting rigidity, cable routing, and compatibility with the driver should all be checked. These factors directly influence the quality of the resulting measurement.
How can a suspected sensor fault be separated from a target or driver problem?
Check the mechanical installation and target relationship first, then inspect the cable and connections and verify the driver or signal converter. Comparing the affected measurement channel with a known-good channel can help determine whether the sensor itself is the source of the abnormal signal.