PR6424/010-010 | Epro Emerson | 16mm Eddy Current Sensor

Product Overview

The Emerson epro PR6424/010-010 is a non-contact eddy current displacement sensor designed for critical machinery protection. While often associated with high-density monitoring, the PR6424 series specifically utilizes a 12mm tip diameter (not 16mm) to provide an extended linear measurement range compared to standard 8mm probes. It serves as a vital component in monitoring shaft vibration, axial position, and differential expansion in large rotating assets like gas turbines and high-speed compressors. We supply this sensor as 100% Brand New and Original factory hardware.

Part Number Breakdown

The alphanumeric code defines the physical build and electrical length of the sensor:

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

• 010: Indicates a 1.0-meter integrated cable length with stainless steel armored protection.

• 010: Specifies the mechanical mounting thread, typically an M14x1.5 threaded body.

Technical Specifications

• Sensor Tip Diameter: 12 mm.

• Measurement Principle: Non-contact eddy current.

• Linear Measuring Range: 4.0 mm (standard range from 1.0 mm to 5.0 mm gap).

• Target Material: Ferromagnetic steel (Standard calibration: AISI 4140 / 42CrMo4).

• Frequency Response: 0 Hz (DC) to 10 kHz.

• Protection: IP68 hermetically sealed head; resistant to oil, water, and steam.

• Operating Temperature: -35°C to +180°C at the sensor tip.

Engineering Advantages

The PR6424/010-010 provides a 4mm linear range—double that of standard probes—which is essential for tracking axial "float" and thermal growth in massive rotors where movements exceed 2mm. The stainless steel armor on the 1.0-meter cable prevents mechanical abrasion and shielding interference within the turbulent environment of a bearing housing. By utilizing eddy current technology, the sensor delivers sub-micron resolution without any physical contact, ensuring the sensor never wears out and the shaft remains undamaged. Its high pressure resistance (up to 5 bar) allows for direct installation into pressurized lubrication systems.

FAQs

• Why is this labeled 12mm if I was looking for 16mm?In the epro/Emerson ecosystem, the PR6424 series standardizes on a 12mm tip to achieve its 4mm linear range. If your application strictly requires a larger 16mm or 20mm tip for even greater ranges, you would typically move to the PR6425 or PR6426 series.

• Can I use this sensor with any vibration monitor?The PR6424/010-010 must be paired with an epro-compatible driver (such as the CON 021) or an MMS 6000/MMS 3000 rack system calibrated specifically for 12mm sensors.

• What is the purpose of the armored cable?The armor protects the sensitive coaxial cable from being crushed or cut by machinery covers or sharp metal shavings often found in industrial bearing pedestals.

• Does the 1.0-meter cable limit my installation?The 1.0m "pigtail" is designed to reach a junction box mounted on the machine casing. From there, you must use a matching extension cable to reach the total system length (usually 5m or 10m) required by the driver.