Product Overview

The EPRO PR6424/010-040+CON010 16mm Eddy Current Sensor is an industrial non-contact measurement configuration designed for monitoring shaft displacement, vibration, and position in rotating machinery. It belongs to the EPRO PR6424 16 mm eddy current sensor family, which is used in machinery protection and condition-monitoring applications.

The sensor operates using the eddy current measurement principle. Rather than making physical contact with the rotating shaft, it generates an electromagnetic field near the target surface. Changes in the distance between the sensor tip and the conductive target affect the electrical characteristics of the sensor system. These changes can be converted into measurement signals for monitoring equipment.

The PR6424 series is designed for critical rotating machinery, including steam turbines, gas turbines, compressors, pumps, and fans. It can provide measurement information related to radial and axial shaft displacement, shaft position, eccentricity, and rotational behavior.

The 16 mm sensing head is intended for applications requiring a larger probe diameter than smaller eddy current sensor designs. Its mechanical configuration and installation dimensions must be considered when selecting mounting locations and replacement components.

The complete model designation includes PR6424/010-040 and CON010. The probe and signal-conditioning equipment should be treated as parts of a measurement system. Before installation or replacement, engineers should verify the precise connector arrangement, cable configuration, and converter compatibility.

Technical Specifications

Note: The technical values above describe the PR6424 sensor family where applicable. Exact cable length, connector type, probe construction, converter interface, and operating limits should be confirmed against the complete product label and configuration documentation.

Function and Working Principle

The PR6424/010-040+CON010 measurement configuration is intended to provide non-contact information about the movement and position of a conductive rotating target.

1. Eddy Current Measurement Principle

The sensor generates a high-frequency electromagnetic field near its sensing tip. When the probe is positioned close to a conductive target, such as a suitable steel shaft, eddy currents are induced in the target surface.

The strength and characteristics of these currents change as the distance between the sensor and the target changes. The sensor system detects these variations and converts them into an electrical measurement signal.

Because the measurement does not require physical contact, the sensor can monitor rotating shafts without introducing mechanical friction between the probe and the measured surface.

2. Shaft Displacement Measurement

Shaft displacement is an important parameter in rotating machinery. Excessive movement may indicate bearing wear, mechanical looseness, rotor imbalance, alignment problems, or other abnormal operating conditions.

The PR6424 sensor can measure changes in the distance between the probe and the shaft surface. When installed at an appropriate position and calibrated correctly, it provides information that can be used to evaluate shaft movement.

3. Vibration Monitoring

In rotating machinery, shaft vibration may change because of imbalance, misalignment, bearing deterioration, mechanical looseness, or changes in operating conditions.

A non-contact eddy current sensor measures shaft movement relative to its mounting position. Monitoring equipment can process this information to help maintenance teams identify changes in machine behavior.

The sensor itself is only one part of the monitoring system. Signal conditioning, monitoring modules, configuration parameters, and installation quality all influence the final measurement.

4. Signal Conditioning

The CON010 designation identifies the associated converter configuration in the supplied product description. Signal-conditioning equipment is used to prepare sensor signals for connection to a monitoring or control system.

The exact electrical interface, supply requirements, output characteristics, and connector arrangement must be confirmed from the documentation for the specific CON010 unit. These details should not be assumed to be identical to other EPRO converter models.

Role in Industrial Machinery Monitoring Systems

The PR6424/010-040+CON010 can be incorporated into a machinery monitoring arrangement that collects shaft movement information and provides it to protection or condition-monitoring equipment.

Turbine Monitoring

Steam and gas turbines contain high-speed rotating assemblies that require continuous monitoring. Shaft displacement and vibration measurements can help operators evaluate rotor behavior and identify changes that may require inspection.

A properly installed PR6424 sensor can provide non-contact shaft measurement information for compatible turbine monitoring systems.

Compressor Protection

Industrial compressors operate under mechanical and process loads that can change during operation. Monitoring shaft movement can help maintenance teams assess machine condition and investigate abnormal vibration trends.

Sensor placement must be selected according to the compressor design, bearing arrangement, target surface, and monitoring requirements.

Pump Condition Monitoring

Large industrial pumps may experience vibration changes caused by imbalance, alignment issues, bearing wear, or hydraulic operating conditions.

A non-contact displacement sensor can provide useful shaft movement information when installed in a compatible monitoring arrangement.

Integration with Monitoring Equipment

The sensor system may be connected to compatible machinery protection or condition-monitoring equipment. The complete measurement chain can include:

• PR6424 eddy current probe.
• Compatible sensor cable and connector.
• CON010 signal-conditioning equipment.
• Machinery monitoring or protection module.
• Control-system interface or data acquisition equipment.

The exact combination must be checked against the manufacturer’s compatibility documentation. A connector that physically fits does not necessarily establish electrical compatibility.

Industrial Applications

1. Steam Turbines

Steam turbines operate at high rotational speeds and require monitoring of shaft movement and vibration. Eddy current sensors can provide non-contact measurements that help operators assess rotor behavior and identify abnormal changes.

The PR6424 family is designed for critical turbomachinery applications, making it relevant to suitable turbine monitoring installations.

2. Gas Turbines

Gas turbines are used in power generation and industrial mechanical-drive applications. Their rotating assemblies operate under demanding thermal and mechanical conditions.

Shaft displacement monitoring can contribute to machinery protection strategies by providing information about rotor movement relative to the sensor mounting position.

3. Industrial Compressors

Compressors are widely used in petrochemical plants, refineries, gas processing facilities, and manufacturing operations.

Continuous shaft monitoring can help maintenance teams identify changes in vibration behavior and investigate possible mechanical faults before they develop into more serious equipment problems.

4. Pumps and Fluid-Handling Equipment

Industrial pumps are used in water treatment, chemical processing, power generation, and general manufacturing.

Where the pump design and monitoring arrangement require shaft displacement measurement, an eddy current sensor can provide non-contact measurement data for condition assessment.

5. Fans and Blowers

Large fans and blowers may operate continuously in industrial ventilation, combustion-air, and process-gas systems.

Shaft vibration and displacement measurements can help identify mechanical changes associated with imbalance, bearing deterioration, or mounting problems.

Installation and System Integration

Correct installation is essential for obtaining reliable measurement results. The sensor must be mounted with suitable mechanical positioning, electrical connections, and calibration.

1. Verify the Sensor Configuration

Before installation, confirm the complete model designation:

PR6424/010-040+CON010.

Check the probe’s thread, mounting length, cable arrangement, connector type, and converter interface. If replacing an existing sensor, compare the original nameplate and wiring documentation with the replacement unit.

Do not assume that another PR6424 sensor with the same 16 mm head diameter will have identical electrical or mechanical characteristics.

2. Select the Mounting Position

The sensor should be mounted securely and positioned toward the intended conductive target surface. The installation must provide sufficient mechanical clearance and maintain the specified measurement gap.

Avoid mounting locations where the probe may contact the rotating shaft during normal operation or under expected mechanical movement.

The mounting structure should be rigid enough to prevent unwanted movement from affecting the measurement signal.

3. Confirm the Target Surface

The PR6424 series is designed for use with suitable ferromagnetic steel targets. Target material and surface condition can affect measurement characteristics.

The target surface should be consistent with the manufacturer’s calibration requirements. Coatings, material differences, surface damage, or unsuitable shaft materials may influence measurement accuracy.

4. Check Cable Routing

Route the sensor cable according to the manufacturer’s installation instructions. Avoid sharp bends, excessive mechanical tension, and unnecessary proximity to high-interference power conductors.

Protect connectors from moisture, contamination, and mechanical damage. Verify that the cable length and connector arrangement are suitable for the distance between the sensor and converter.

5. Verify Converter Compatibility

Confirm that the CON010 unit is compatible with the specific PR6424/010-040 sensor configuration.

Check the electrical connection, supply requirements, output signal, and monitoring-system input requirements before energizing the equipment.

Do not substitute another converter model based only on physical connector similarity.

6. Calibrate and Test the Measurement Chain

After installation, follow the manufacturer’s calibration and commissioning procedures. Confirm the initial gap, signal response, and measurement direction.

Where the system is connected to machinery protection equipment, verify the alarm and trip settings against the equipment manufacturer’s requirements and the plant’s protection philosophy.

Record the installation details and final configuration for future maintenance.

Compatible System Components

The PR6424/010-040+CON010 should be treated as part of a complete measurement arrangement. The following components may be used in a compatible installation, subject to the manufacturer’s specifications.

The components listed above are examples of equipment used in machinery monitoring systems. They are not necessarily included in the supplied product package.

Alternative Models and Replacement Considerations

The PR6424 series includes different probe configurations. Although models may share a 16 mm sensing head, their mounting arrangements, cable options, and electrical configurations can differ.

When selecting a replacement, compare the following parameters:

• Sensor head diameter.
• Probe mounting thread and mechanical length.
• Cable length and cable construction.
• Connector type and pin arrangement.
• Compatible signal converter.
• Sensitivity and measurement range.
• Target material and calibration requirements.
• Operating temperature and environmental limits.
• Monitoring-system input characteristics.

A sensor should not be considered interchangeable solely because it belongs to the same product family. The complete sensor and converter configuration must be evaluated.

Key Advantages

Non-Contact Measurement

The eddy current measurement principle allows shaft movement to be monitored without physical contact between the probe and the rotating target.

16 mm Sensing Head

The 16 mm probe design is intended for applications requiring the mechanical and measurement characteristics of the PR6424 sensor family.

Machinery Condition Monitoring

The sensor can provide displacement information used in monitoring shaft vibration, position, and eccentricity.

Industrial Turbomachinery Applications

The PR6424 family is designed for demanding rotating machinery applications, including turbines, compressors, pumps, and fans.

Continuous Measurement Capability

When integrated with compatible monitoring equipment, the sensor can support ongoing observation of shaft movement during machine operation.

Flexible System Integration

The sensor can form part of a larger machinery protection arrangement involving signal conditioning, monitoring modules, and plant control systems.

Technical FAQs

1. What is the EPRO PR6424/010-040+CON010?

It is a 16 mm eddy current sensor configuration intended for non-contact measurement of shaft displacement and vibration in industrial rotating machinery.

2. What is the sensor head diameter?

The sensor head diameter is 16 mm, as specified in the product designation and supplied product information.

3. What does an eddy current sensor measure?

An eddy current sensor measures changes in the distance between its sensing tip and a conductive target. In rotating machinery, this principle can be used to monitor shaft displacement, vibration, position, and eccentricity.

4. What is the typical sensitivity of the PR6424 series?

The PR6424 16 mm sensor specification sheet gives a typical sensitivity of 4 V/mm with linearity of approximately ±1.5%. The actual measurement arrangement must be calibrated and configured according to the applicable system documentation.

5. What machinery can use this sensor?

Suitable applications include steam turbines, gas turbines, compressors, pumps, and fans. The installation must be designed around the specific machine and monitoring requirements.

6. What is the function of the CON010?

CON010 is identified as the associated converter configuration in the supplied model designation. The converter forms part of the signal-conditioning arrangement. Its exact electrical interface and compatibility should be verified using the documentation for the specific unit.

7. Can the PR6424/010-040 be replaced with another PR6424 model?

Not automatically. Different PR6424 configurations may have different cable arrangements, connector types, mounting dimensions, and electrical characteristics. Compare the complete ordering codes before replacement.

8. Does the sensor contact the rotating shaft?

No. It uses the eddy current principle to measure the distance to a conductive target without normal physical contact.

9. What should be checked before purchasing this sensor?

Verify the complete model designation, sensor head diameter, probe configuration, cable length, connector type, converter compatibility, and physical condition. For critical machinery, confirm that the replacement matches the existing monitoring system.

10. What is the supplied weight?

The supplied product listing specifies a weight of 0.32 kg. Confirm whether this represents the sensor assembly alone or the complete packaged configuration before calculating shipping weight.

Procurement and Maintenance Recommendations

When sourcing the EPRO PR6424/010-040+CON010, verify the complete product designation and the configuration of the supplied probe and converter. The PR6424 family contains multiple mechanical and electrical variants, so checking only the 16 mm head diameter is insufficient for confirming compatibility.

For replacement projects, compare the existing unit’s label, mounting dimensions, cable arrangement, connector, and converter interface. Where possible, retain the original installation documentation and calibration information.

For used or refurbished equipment, request clear photographs of the sensor head, cable, connector, converter, and identification labels. Check for damaged cable insulation, bent connectors, corrosion, and physical damage to the sensing tip.

During maintenance, inspect the sensor mounting, cable routing, connectors, and converter connections. Avoid pulling or sharply bending the cable during service. If the monitoring signal changes unexpectedly, investigate the complete measurement chain rather than assuming that the probe itself is defective.

For critical turbines and compressors, sensor replacement and calibration should follow the plant’s machinery protection procedures and the manufacturer’s technical documentation.

Conclusion

The EPRO PR6424/010-040+CON010 is a 16 mm eddy current sensor configuration intended for non-contact shaft displacement and vibration measurement in industrial rotating machinery. Its applications include turbines, compressors, pumps, and fans where reliable shaft movement information is important for machinery monitoring.

The PR6424 series offers a typical sensitivity of 4 V/mm and a static measurement range of ±2.0 mm under its specified measurement conditions. Correct probe mounting, target material, cable configuration, converter compatibility, and system calibration are essential for reliable operation.

For industrial maintenance and procurement, verifying the complete model designation is the most important step when selecting this sensor or a replacement assembly.