Epro PR6424/104-101 16mm Eddy Current Sensor

The Epro PR6424/104-101 16 mm Eddy Current Sensor is a high-precision non-contact vibration and displacement monitoring device developed for industrial rotating machinery such as turbines, compressors, and generators. Using eddy-current technology, it provides accurate measurement of shaft vibration, axial position, and radial displacement under harsh operating conditions. This model is part of Epro’s renowned PR6424 series, known for reliability in critical process industries including power generation, oil & gas, and petrochemical plants.

Product Parameters

Applications

The PR6424/104-101 is designed for continuous condition monitoring of:

• Steam and Gas Turbines – monitoring rotor vibration and shaft axial displacement.

• Compressors and Pumps – detecting imbalance, misalignment, and early-stage bearing issues.

• Motors and Generators – long-term vibration trend analysis.

• Industrial Fans & Blowers – ensuring stable operation in power plants or chemical processing lines.

• Petrochemical Rotating Equipment – high-temperature and explosive environments.

Its robust construction and wide temperature tolerance make it suitable for hazardous or high-temperature zones such as refineries and offshore platforms.

Advantages

• High Measurement Accuracy: Maintains tight linearity for critical displacement readings.

• Wide Operating Temperature: Withstands extreme heat without signal drift.

• Excellent Electromagnetic Immunity: Low-noise design for accurate readings in electrically noisy environments.

• Non-Contact Measurement: Reduces mechanical wear and eliminates frictional errors.

• Long-Term Stability: Suitable for permanent installation in safety-critical machinery protection systems.

• Seamless Integration: Fully compatible with Epro CON021 and similar driver modules for flexible system configuration.

FAQ

1. What is the optimal gap voltage range for stable operation of the PR6424/104-101?

   Typically maintained between 7 V and 11 V DC, adjustable through the driver module to suit the target shaft material.

2. How does the sensor maintain accuracy in environments with strong electromagnetic fields?

   A shielded low-noise coaxial cable and internal filtering provide high resistance to electromagnetic interference.

3. What calibration method ensures consistent linearity across the measurement range?

   Each probe undergoes precision factory calibration against certified displacement standards, ensuring ≤ ±0.25 % full-scale linearity.

4. How can the PR6424/104-101 be configured to monitor both radial and axial displacement?

   By installing two probes at orthogonal angles and integrating them with a dual-channel monitoring system for simultaneous measurement.

5. Which shaft materials allow optimal eddy-current response with this sensor?

   Most ferromagnetic alloys, including carbon steel and nickel-based alloys, provide excellent signal strength without surface preparation.

6. What built-in features counteract temperature-induced measurement drift?

   Temperature-compensating circuitry and high-grade probe materials stabilize readings from –35 °C to +180 °C.

7. How should the sensor be grounded to avoid electrical noise and ground loops?

   Use a single-point grounding scheme at the monitoring rack or driver module to maintain signal integrity.

8. What sealing and housing characteristics support use in harsh industrial environments?

   The stainless-steel probe body with IP67 protection resists moisture, dust, and aggressive industrial atmospheres.

9. How does the probe’s frequency response benefit high-speed rotating machinery?

   A 0–10 kHz bandwidth allows accurate tracking of rapid vibration changes in turbines and compressors.

10. What certifications or precautions enable safe use in hazardous or explosive zones?

    When integrated with certified intrinsic-safety barriers and approved driver modules, the probe meets ATEX and comparable hazardous-area standards.