Emerson PR6424/010-100 16mm Eddy-Current Contactless Sensor

Emerson EPRO PR6424/010-100 is a high-precision, non-contact eddy current sensor system designed for continuous monitoring of rotating machinery. Part of the renowned PR6424 series, this 16mm sensor is engineered to measure radial and axial shaft displacement, vibration, eccentricity, and rotational speed in critical industrial equipment such as steam turbines, gas turbines, compressors, and large pumps .

Manufactured in Germany by EPRO (an Emerson brand), the PR6424/010-100 variant features a robust, armored cable design for enhanced durability in harsh environments. It operates on the eddy current principle, providing a direct, wear-free measurement of shaft dynamics relative to the sensor tip . When paired with a compatible signal converter like the CON011 or CON021, it forms a complete monitoring solution that integrates seamlessly with protection systems like the MMS 6000 .

Key Features & Benefits

Non-Contact Measurement: Utilizes eddy current technology to eliminate mechanical wear and tear, ensuring long-term reliability and minimal maintenance .

High Sensitivity & Accuracy: Provides a standard sensitivity of 4 V/mm (101.6 mV/mil) with excellent linearity of ≤ ±1.5%, guaranteeing precise data for machinery protection .

Armored Cable Construction (Model /010): The "010" designation specifies a rugged, armored PTFE cable, offering superior protection against mechanical damage, oil, and water in demanding industrial environments .

Wide Operating Temperature: Designed to withstand extreme conditions with an operating temperature range of -35°C to +180°C for the sensor, making it suitable for both high-heat turbines and cold-weather installations .

API 670 Compliance: Fully compliant with API 670 standards for vibration, axial position, and bearing temperature monitoring systems, ensuring industry-standard performance and reliability .

Hazardous Area Certification: Certified for use in explosive environments (ATEX, IECEx, CSA) when used with appropriate barriers and converters, with ratings up to EEx ib IIC T6/T4 .

Technical Specifications (PR6424/010-100)

Specification Details

Manufacturer Emerson / EPRO

Model Number PR6424/010-100

Sensor Type Eddy Current (Non-Contact) 

Sensor Diameter 16 mm 

Total Length (Body) 100 mm 

Sensitivity 4 V/mm (101.6 mV/mil) ±5% 

Static Measurement Range ±2.0 mm (Linear Range) 

Dynamic Measurement Range 0 to 1,000 µm 

Nominal Air Gap Approx. 2.7 mm (0.11 in) 

Linearity Error ≤ ±1.5% 

Target Material Ferromagnetic Steel (e.g., 42CrMo4) 

Operating Temperature Sensor: -35°C to +180°C; Cable: -35°C to +150°C 

Cable Type Armored PTFE (Indicated by "/010") 

Housing Material Stainless Steel 

Minimum Shaft Diameter ≥ 80 mm 

Protection Rating IP65 / IP67 (Dust-tight and Water-resistant) 

Certifications CE, ATEX, IECEx, CSA, API 670, DIN 45670 

Weight Approx. 0.2 kg (with 1m cable, no armor)