PR6423/014‑040 EPRO | High-Precision Shaft Displacement Sensor

EPRO CON021 + PR6423/014‑040 Eddy-Current Sensor System

Product Summary

The EPRO CON021 + PR6423/014‑040 is a high-performance eddy-current sensor system designed for industrial machinery monitoring. It measures shaft displacement, vibration, eccentricity, and speed/keyphasor signals with exceptional precision. Moreover, its rugged probe and fast-response converter ensure accurate real-time monitoring in turbines, compressors, pumps, and motors. Therefore, it supports critical machinery protection and predictive maintenance programs in API 670-compliant environments.

Technical Specifications

CON021 Signal Converter

• Frequency Range (–3 dB): 0–20,000 Hz

• Rise Time: <15 µs

• Compatible Probes: PR6422, PR6423, PR6424, PR6425, PR6426

• Supply Voltage Range: –23 V to –32 V (Output –4 V to –20 V), –21 V to –32 V (Output –2 V to –18 V)

• Output Signal: Voltage proportional to shaft displacement

• Housing Material: LMgSi 0.5 F22 alloy

• Weight: 120 g

• Mounting: Panel mount with 4 × M5×20 screws

• Protection Class: IP20

• Operating Temperature: –30 °C to +100 °C

• Shock & Vibration Resistance: 5 g @ 60 Hz @ 25 °C

PR6423/014‑040 Probe

• Probe Tip Diameter: 8 mm

• Nominal Measuring Range: 0–2.0 mm (extendable to 2.5 mm with converter)

• Sensitivity: 8 V/mm (203.2 mV/mil)

• Air Gap (Center): 1.0 mm nominal

• Dynamic Range: ±1.0 mm

• Frequency Response: 0–20 kHz (–3 dB)

• Target Material: Ferromagnetic steel (42CrMo4 standard)

• Maximum Surface Speed: 2,500 m/s

• Minimum Shaft Diameter: ≥20 mm

• Cable Length: 4 m

• Long-Term Drift: ≤ ±1.5% max

Environmental Ratings

• Operating Temperature Range: –35 °C to +180 °C

• Short-Term Excursions (<4 h): up to +200 °C

• Maximum Cable Temperature: +200 °C

• Temperature Error: <2% per 100 K

• Pressure Resistance: 10,000 hPa (145 psi)

• Shock & Vibration Resistance: 5 g @ 60 Hz @ 25 °C

• Certification: ATEX approved for hazardous areas

FAQ

Q: What does the CON021 + PR6423/014‑040 system measure?
It measures shaft displacement, vibration, eccentricity, and keyphasor signals for critical machinery protection.

Q: Can the system operate in high-temperature environments?
Yes, the probe and converter handle operating temperatures from –35 °C up to +180 °C.

Q: Is it suitable for hazardous industrial areas?
Yes, ATEX certification ensures safe use in zones with explosive atmospheres.

Q: What is the maximum frequency response of this system?
The system operates reliably up to 20 kHz, suitable for dynamic vibration monitoring.

Q: What installation options are available for the probe?
The 8 mm probe comes with a 4 m cable and can be mounted flexibly for turbines, compressors, and motors.