
Product Overview
In industrial condition monitoring systems, precise and stable measurement of shaft displacement and vibration is critical for maintaining the safety and efficiency of rotating machinery. The Epro CON021 + PR6424/010-120 Eddy Current Sensor is engineered to deliver high-accuracy, non-contact measurement using advanced eddy current technology.
This system integrates a 16 mm probe (PR6424/010-120) with a signal converter (CON021), enabling accurate monitoring of shaft position, vibration, and dynamic behavior in turbines, compressors, and other high-value industrial equipment.
Technical Specifications
| Parameter |
Details |
| Manufacturer |
Epro |
| Model |
CON021 + PR6424/010-120 |
| Product Type |
Eddy Current Sensor |
| Sensor Head Diameter |
16 mm |
| Measurement Type |
Non-contact displacement / vibration |
| Output Signal |
Analog signal (via converter) |
| Sensitivity |
4 V/mm (±1.5%) |
| Measurement Range |
Static ±2.0 mm / Dynamic up to 1000 µm |
| Frequency Range |
0 – 20,000 Hz |
| Nominal Air Gap |
Approx. 2.7 mm |
| Power Supply |
24 VDC (converter) |
| Operating Temperature (Probe) |
-35°C to +150°C |
| Operating Temperature (Converter) |
-30°C to +100°C |
| Protection Class |
IP66 (probe), IP20 (converter) |
| Weight |
0.32 kg |
| Installation |
Threaded mounting / panel installation |
| Application |
Rotating machinery monitoring |
| Environment |
Industrial-grade |
| Reliability |
Designed for continuous operation |
Function and Working Principle
The CON021 + PR6424/010-120 operates based on the eddy current sensing principle. The probe generates a high-frequency electromagnetic field that interacts with a conductive target surface such as a rotating shaft.
This allows:
Non-contact measurement of displacement and vibration
Detection of shaft position, eccentricity, and dynamic movement
High-speed response to mechanical changes
Stable operation in harsh industrial environments
The variation in the probe-to-target gap is converted into electrical signals by the CON021 converter, enabling precise real-time monitoring and analysis.
Role in Industrial Control Systems
This sensor system plays a key role in machinery protection and condition monitoring systems, supporting:
Turbine and compressor monitoring
Shaft displacement measurement
Vibration monitoring systems
Equipment protection and safety systems
It enables early detection of mechanical abnormalities, helping to reduce downtime and prevent equipment failure.
Industrial Applications
The Epro eddy current sensor is widely used in:
Steam and gas turbines
Compressors and pumps
Power generation plants
Oil and gas processing facilities
Industrial automation systems
Predictive maintenance programs
Its 16 mm probe size makes it ideal for medium-range displacement measurement in critical machinery.
Installation and System Integration
Proper installation ensures optimal performance:
Mounted close to the shaft or conductive surface
Requires precise air-gap calibration
Connected to CON021 signal converter
Integrated into PLC, DCS, or monitoring systems
Installation must follow alignment and mounting standards
Correct setup ensures long-term accuracy and system stability.
Compatible System Components
The CON021 + PR6424/010-120 typically works with:
Epro monitoring systems
Signal converters and interface modules
Vibration monitoring systems
Control and protection units
Data acquisition systems
These components form a complete industrial monitoring solution.
Recommended Alternative Models
| Model |
Type |
Key Feature |
Application |
| PR6424/010-120 |
Eddy Current Sensor |
16 mm probe |
Standard monitoring |
| PR6424 Series |
Eddy Sensor |
Multiple variants |
General applications |
| PR6423 Series |
Eddy Sensor |
Smaller probe size |
Compact installations |
| PR6426 Series |
Eddy Sensor |
Larger probe size |
Heavy-duty applications |
| CON020 |
Signal Converter |
Standard signal processing |
General systems |
Key Advantages
Non-contact measurement with no mechanical wear
High precision and fast response
Stable performance in harsh industrial environments
Suitable for continuous industrial operation
Reliable signal conversion with CON021 module
Supports predictive maintenance strategies
Technical FAQs
What is the main function of this sensor?
It measures shaft displacement and vibration using non-contact eddy current technology.
What does the CON021 module do?
It converts probe signals into standardized outputs for monitoring systems.
Where is it typically used?
It is used in turbines, compressors, pumps, and rotating machinery requiring precise monitoring.
Conclusion
The Epro CON021 + PR6424/010-120 Eddy Current Sensor (16 mm) is a reliable and high-performance solution for industrial condition monitoring. Its non-contact measurement capability, combined with robust design and accurate signal conversion, makes it an essential component in machinery protection systems.
For engineers and maintenance professionals, it provides a dependable way to improve equipment reliability, reduce downtime, and ensure safe operation in demanding industrial environments.