EPRO PR6423/015-000-CN CON021 Eddy Current Proximity Sensor System Core Analysis
I. Product Positioning and Core Functions
EPRO PR6423/015-000-CN is a high-precision eddy current proximity sensor under the EPRO brand of Emerson. It needs to be used in conjunction with the preamplifier CON021 to form a complete eddy current measurement system. Its core functions are non-contact displacement and vibration measurement, which are widely applied in the monitoring of shaft vibration, shaft displacement, eccentricity, and temperature difference of rotating machinery such as steam turbines, compressors, and fans. It is a key component for industrial equipment condition monitoring and fault diagnosis.

Technical parameters and performance indicators Measurement range
Axial/Radial Displacement: ±0.5mm to ±4mm (for specific models such as PR6423/015-000-CN, the range usually covers ±1mm).
Vibration Measurement: Capable of capturing dynamic vibration signals of the shaft, with a frequency response range covering typical mechanical vibration frequency bands (such as 5Hz – 1kHz).
Other Parameters: Supports static/dynamic displacement measurements such as shaft eccentricity, bearing wear, oil film thickness, etc.
Sensor Characteristics
Probe Size: Diameter is typically Φ6mm, Φ10mm or Φ18mm, and the length is customized according to the model (such as 45mm, 55mm, etc.).
Material: The probe housing is made of stainless steel, with strong corrosion resistance, suitable for harsh industrial environments.
Cable: Standardly equipped with high-temperature resistant cables (maximum +200℃), and optional armored cables to enhance anti-interference capability.
Preamplifier CON021 Performance
Output Signal: Converts the eddy current signal generated by the sensor into a DC voltage superimposed with an AC voltage signal, for analysis by the monitoring system.
Linearity: After factory calibration, the linear error is ≤1.0% (depending on the model and measurement range).
Temperature Stability: Working temperature range is -20℃ to +70℃, with temperature drift ≤0.05%/℃.
Protection Grade: IP20 (the sensor probe part can reach IP65, and a protective cover needs to be selected).

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