Emerson PR6423/10R-131 Eddy Current Sensor Shaft Monitoring

Product Item : PR6423/10R-131
Product Brand : Emerson
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Product Description
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Emerson PR6423/10R-131 (formerly EPRO) is a high-performance, non-contact eddy current sensor engineered for continuous monitoring of radial and axial shaft displacement in the most demanding rotating machinery applications . As a key component of Emerson's machinery protection systems, this 8mm sensor is the industry standard for steam turbines, gas turbines, compressors, and pumps where reliability is paramount.

What is the Emerson PR6423/10R-131?

The PR6423/10R-131 is a reverse-mount eddy current sensor with an 8 mm tip diameter, designed to measure both static (position, eccentricity) and dynamic (vibration, shaft motion) parameters without physical contact . Operating on the proven principle of eddy currents, it generates a low-power radio frequency signal that is modulated by the distance to a conductive target, providing an output voltage directly proportional to the displacement . The "10R" designation indicates the reverse mount configuration with a 3/8”-24 UNF thread, offering flexible installation options in space-constrained or specialized machine casings . This sensor is typically paired with a signal converter like the CON031 or CON021 to interface with monitoring systems such as the MMS3000 or CSI 6500 .

Key Technical Specifications (Specs)

Parameter Value

Manufacturer Emerson (EPRO)

Model Number PR6423/10R-131

Sensor Type Eddy Current (Non-contact displacement)

Tip Diameter 8 mm

Mounting Type Reverse mount

Thread Type 3/8”-24 UNF

Linear Measurement Range 2 mm (80 mils)

Initial Air Gap 0.5 mm (20 mils)

Incremental Scale Factor (ISF) 8 V/mm (203.2 mV/mil) ± 5%

Deviation from Straight Line (DSL) ±0.025 mm (±1 mil) (0–45°C)