Description
The EPRO PR9376010-011 is a high-precision Non-Contacting Displacement Sensor, commonly referred to as an Eddy Current Probe. It is part of the PR9376 series used for measuring shaft vibration, axial position, and eccentricity in critical rotating machinery like turbines, compressors, and pumps.
Product Parameters (Datasheet)
- Model Number: PR9376/010-011
- Sensor Type: Eddy Current (Inductive)
- Tip Diameter: Typically 8 mm
- Measurement Range: 2.0 mm (standard for 8mm probes)
- Sensitivity: 8.0 V/mm (or 200 mV/mil) when used with a standard converter
- Operating Temperature: -35°C to +175°C (-31°F to 347°F)
- Cable Length: 1.0 meter (integral cable)
- Connector Type: Miniature coaxial connector
- Thread Size: M10 x 1 (standard metric threading)
- Material: Stainless steel body with technical ceramic or high-performance plastic tip
EPRO PR9376010-011
EPRO PR9376010-011
EPRO PR9376010-011
Country of Origin
This sensor was originally manufactured by EPRO GmbH in Germany (now part of the Emerson / AMS family).
Application Fields
The PR9376010-011 is a vital component for machine protection and condition monitoring:
- Steam & Gas Turbines: Measuring radial shaft vibration and axial thrust position.
- Hydroelectric Generators: Monitoring shaft run-out and air gap.
- Large Centrifugal Compressors: Detecting surge-induced axial movement.
- High-Speed Gearboxes: Tracking gear mesh vibration and bearing wear.
- Pumps & Fans: Providing early warning of mechanical loosening or misalignment.
Product Usage Instructions
- Mechanical Installation: Thread the probe into the machine housing or a specialized bracket. Ensure the probe tip is perpendicular to the shaft surface (the “target”).
- Gap Adjustment: Connect the probe to its corresponding signal converter (e.g., CON0x1 series). Monitor the DC output voltage while threading the probe in. Set the “Static Gap” (usually around -10V DC) to ensure the probe operates in its linear range.
- Cable Protection: Use flexible conduit or armor for the integral cable. Eddy current signals are extremely sensitive; avoid sharp bends or proximity to high-voltage power lines.
- Target Material: Ensure the shaft target area is made of 42CrMo4 or similar ferromagnetic steel. Non-ferrous materials like aluminum will require different calibration settings.
- Locking: Once the gap is set, tighten the locknut to the specified torque to prevent the probe from vibrating loose during machine operation.
Product Technical Description
Technically, the PR9376010-011 works on the Eddy Current Principle. The probe tip contains a coil that is energized with a high-frequency radio frequency (RF) signal. This creates an electromagnetic field. As the metal shaft moves closer to or further from the tip, it absorbs energy from this field through eddy currents. The signal converter detects this energy loss and converts it into a voltage proportional to the distance. This allows for the measurement of both static distance (axial position) and high-frequency movement (vibration).
Q&A (Common Questions)
Q: Can I use this probe with a Bently Nevada Proximitor? A: Generally, EPRO probes and Bently Nevada converters have different electrical characteristics (impedance and frequency). While both are eddy current sensors, they are not typically plug-and-play interchangeable without careful calibration and technical verification.
Q: What is the purpose of the “011” suffix? A: In EPRO nomenclature, these suffixes often denote the specific cable length, thread length, or connector type. “010-011” usually identifies a standard M10 thread with a specific integral cable configuration.
Q: Why is the tip of the probe made of a different material? A: The tip is made of a non-conductive, high-strength material (like PEEK or Ceramic) to protect the internal coil while allowing the electromagnetic field to pass through to the target.
Q: How do I know if the probe is faulty? A: Check the resistance of the probe. An “Open” (infinite) or “Short” (near zero) reading across the coaxial center and shield usually indicates internal damage to the coil or cable.
Similar Model Recommendations
- EPRO PR9376/010-001 (Alternative cable length)
- EPRO CON021 (Compatible Signal Converter)
- EPRO PR6423 (High-temperature displacement sensor)
- EPRO PR6424 (Standard displacement sensor)
- Emerson AMS 6500 (Complete monitoring system)
For technical support or to procure the EPRO PR9376010-011, please contact our vibration monitoring specialists.
