Description
Emerson PR6423/010-000-CN+CON021
The Emerson PR6423/010-000-CN+CON021 is an eddy current displacement sensor system.
Working Principle
Eddy Current Effect: The PR6423 sensor operates based on the eddy current effect. When the sensor probe approaches the metal surface under test, a high-frequency alternating current is passed through the coil inside the probe, generating an alternating magnetic field on the probe surface. This magnetic field induces eddy currents on the metal surface, which in turn produce a magnetic field opposite in direction to the original field, affecting the impedance of the probe coil. By measuring the change in coil impedance, the distance change between the probe and the metal surface can be determined, enabling non-contact displacement measurement.
Signal Processing: The CON021 preamplifier is used to process and convert the signals detected by the sensor. It transforms the impedance change signal of the sensor coil into standard output signals, such as 0-10V or 4-20mA analog signals, for easy transmission and processing/display by subsequent measurement and control devices.
Technical Parameters
Sensor:
- Probe Diameter: 8mm
- Measurement Range: Up to 30mm (specific to the model)
- Accuracy: ±0.1mm (typical value)
- Frequency Response: Up to 20,000Hz
- Operating Temperature: -40°C to 80°C
- Protection Class: IP67
Preamplifier:
- Rated Operating Voltage: Typically 12V DC or 24V DC (may vary by model)
- Output Signal: Generally 0-10V or 4-20mA analog signals; some models may output other signal forms such as square waves.
Features
- High Precision: Enables high-precision displacement measurement to meet the demand for accurate monitoring of equipment operating status in industrial production.
- Broadband Response: Exhibits excellent frequency response characteristics, capable of quickly and accurately tracking the dynamic changes of the measured object, suitable for measuring high-speed rotating or vibrating objects.
- Non-Contact Measurement: Adopts a non-contact measurement method to avoid wear and interference caused by direct contact with the measured object, improving the sensor's service life and measurement reliability.
- Robust and Durable: With a rugged structure, it can adapt to harsh industrial environments such as high temperature, high pressure, humidity, and dust, and can operate stably on equipment such as steam turbines, pumps, and compressors.
Application Fields
Primarily used in industrial monitoring of parameters such as vibration and displacement of rotating machinery, including steam turbines, gas turbines, compressors, pumps, and other equipment. It can measure physical quantities such as shaft vibration, eccentricity, thrust (axial displacement), differential expansion, valve position, and air gap, helping staff promptly understand equipment operating status, prevent equipment failures, and ensure the safe and stable operation of industrial production.
