Emerson PR6423/013-030 CON021 Eddy Current Sensor

Emerson PR6423/013-030 CON021 is a high-performance eddy current sensor designed for non-contact measurement of shaft displacement, vibration, and position in the most demanding industrial environments. As part of the renowned EPRO series of proximity probes, this sensor is an essential component for machinery protection systems monitoring steam turbines, gas turbines, compressors, pumps, and fans .

What is the Emerson PR6423/013-030 CON021?

The Emerson PR6423/013-030 CON021 is a compact, non-contact eddy current sensor that utilizes advanced electromagnetic induction technology to measure the distance between the probe tip and a conductive target surface . This particular configuration—PR6423/013-030 CON021—represents a specific model variant within the PR6423 series, designed for precise linear displacement measurements in industrial automation and control applications .

The sensor operates on the principle of eddy currents: a high-frequency signal is generated in the probe coil, inducing eddy currents in the target material. Changes in the gap between probe and target modulate these currents, producing a linear output signal proportional to displacement . This technology enables micrometer-level resolution and repeatability essential for protecting high-speed rotating machinery .

Key Technical Specifications (Specs)

Understanding the precise specifications of the PR6423/013-030 CON021 is crucial for proper system integration and performance validation.

Parameter Specification

Manufacturer Emerson (EPRO Series) 

Model Number PR6423/013-030 CON021 

Sensor Type Non-contact Eddy Current Sensor 

Linear Measurement Range 2 mm (80 mils) 

Initial Air Gap 0.5 mm (20 mils) 

Operating Voltage -24 V DC (typical for systems) or 220 V AC depending on system interface 

Output Frequency 30 kHz (primary) or 50 kHz variants 

Resolution 1 micron (0.001 mm) capable 

Temperature Range -25°C to +85°C (extended ranges available) 

Protection Rating IP67 (dust-tight and waterproof) 

Weight Approximately 0.26 kg 

Material Compatibility Steel and ferrous metals 

Connector Type M8 x 0.8 with 5m integral cable