Description
Product Description
Overview
The PR6423/004-030-CN from Emerson EPRO is a high-precision eddy current sensor engineered for continuous shaft monitoring in rotating machinery. It enables accurate detection of radial vibration, shaft displacement, and eccentricity without any mechanical contact, ensuring reliable performance in demanding industrial environments. Designed for long-term operation, this sensor is ideal for turbines, compressors, and other high-speed machinery.
Probe Features
The PR6423/004-030-CN probe is a compact 8 mm diameter eddy current sensor with a factory-attached 4-meter cable. It operates alongside the CON041 signal converter, which excites the probe, processes high-frequency return signals, and delivers proportional analog output suitable for control and protection systems. This configuration supports regional compliance and simplified installation practices.
Technical Specifications
PR6423/004-030-CN Eddy Current Probe
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Measurement Principle: Non-contact eddy current displacement
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Probe Tip Diameter: 8 mm
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Cable Length: 4 meters (factory-installed)
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Linear Measurement Range: 0–2 mm (typical)
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Extended Range: Up to 3 mm depending on calibration and target material
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Sensitivity: ~7.87 mV/μm (with matched CON041 driver)
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Frequency Response: DC to 10 kHz
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Target Material: Conductive ferromagnetic steels (e.g., 42CrMo4 / AISI 4140)
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Operating Temperature: -35°C to +180°C
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Environmental Protection: IP66–IP67
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Construction:
CON041 Signal Converter
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Function: Probe excitation, RF signal demodulation, linearization, and output conditioning
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Output Signal: Linear analog voltage (typically 0–10 V proportional to displacement)
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Frequency Bandwidth: 0–20 kHz (-3 dB)
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Dynamic Response: Rise time <15 μs
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Power Supply: 23–32 VDC (nominal 24 V)
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Operating Temperature: -30°C to +100°C
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Installation: DIN rail mounting with screw terminals
Applications
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Continuous shaft vibration and displacement monitoring in turbines and compressors
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Detection of rotor eccentricity and alignment issues
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Industrial machinery requiring non-contact measurement under harsh conditions
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Long-term condition monitoring and predictive maintenance programs
FAQ
Q: Can the PR6423/004-030-CN probe be used with non-ferromagnetic targets?
A: The probe is optimized for ferromagnetic conductive materials. Non-ferromagnetic targets may require calibration adjustments.
Q: What is the maximum measurement distance?
A: The typical linear range is 0–2 mm, with an extended range up to approximately 3 mm depending on target material.
Q: Is the sensor suitable for high-temperature environments?
A: Yes, the probe operates up to +180°C, and the signal converter up to +100°C.
Q: Are there similar models for comparison?
A: Emerson offers other PR64xx series probes with different cable lengths, tip diameters, and frequency ranges to match specific monitoring requirements.
