Emerson epro PR6424/010-100 Eddy Current Displacement Sensor

Product Overview

The Emerson epro PR6424/010-100 is a non-contact eddy current sensor engineered for critical machinery protection systems. Utilizing a 12mm tip diameter, this sensor provides an extended linear measurement range, making it the primary choice for monitoring axial thrust position and differential expansion in large rotating assets. We supply this unit as 100% Brand New and Original factory-sealed hardware.

Part Number Breakdown

The PR6424 alphanumeric configuration specifies the physical dimensions and cable protection:

• PR6424: Series designation for 12mm tip diameter sensors (Extended Range).

• 010: Indicates a 1.0-meter integrated cable length protected by stainless steel armor.

• 100: Specifies the mechanical mounting configuration, typically featuring an M14x1.5 threaded body with standard stud length.

Technical Specifications

• Sensor Tip Diameter: 12 mm.

• Measurement Principle: Non-contact eddy current technology.

• Linear Range: 4.0 mm (typically spanning from 1.0 mm to 5.0 mm gap).

• Frequency Response: 0 Hz (DC) to 10 kHz for static and dynamic measurements.

• Target Material: Ferromagnetic steel (Standard calibration for AISI 4140).

• Environmental Resistance: IP68 rated; hermetically sealed against oil, steam, and water.

• Operating Temperature: Rated for up to 180°C at the sensor head.

Engineering Advantages

The PR6424/010-100 addresses the requirements of massive turbomachinery where axial movement exceeds the capabilities of standard 8mm probes. The 12mm tip produces a larger electromagnetic field, allowing the sensor to maintain high linearity over a 4mm span. This is crucial for tracking thermal growth in turbine rotors to prevent catastrophic contact between rotating and stationary components. The stainless steel armor provides essential mechanical protection for the coaxial cable within the harsh, oil-saturated environment of bearing housings, ensuring signal integrity over years of continuous operation.

FAQs

• Why does this sensor use a 12mm tip instead of the standard 8mm? The 12mm tip is necessary to achieve the 4mm linear range. Standard 8mm sensors (like the PR6423) are generally limited to a 2mm range, which is often insufficient for monitoring axial thrust or differential expansion in large turbines.

• Can I connect this 1.0m sensor directly to my monitor? The 1.0m cable is a "pigtail" designed to exit the machine case. You must use a matching extension cable (usually 4m or 9m) to reach the total system length required by your specific driver or transmitter.

• What happens if the target material is not AISI 4140 steel? Eddy current sensors are material-sensitive. If your shaft uses a different alloy, the output voltage will deviate from the standard calibration. In such cases, the driver must be recalibrated to match the specific metallic properties of your target.

• How do I ensure the sensor is mounted correctly? Use a rigid mounting bracket and ensure the M14 threads are securely locked. Any movement in the sensor mounting itself will be incorrectly interpreted as shaft vibration, leading to false alarms in the protection system.