EPRO PR6424/006-131 Eddy Current Transducer System

The EPRO PR6424/006-131, also cataloged as the PR6424 Eddy Current Sensor Set, operates as a dedicated hardware component for non-contact shaft displacement and vibration measurement within turbomachinery protection platforms.

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics Integrity

The PR6424/006-131 non-contact sensing system operates on precise eddy-current probe scaling principles, translating physical clearance changes into linear electromagnetic impedance shifts. Designed for fast-transient rotor dynamics evaluation, the system features a frequency response spanning 0-20 kHz (-3 dB) with a rise time <=15 us to capture rapid dynamic displacement events. The matching CON041 signal conditioner handles gap voltage validation, converting raw probe loading into stable negative DC output ranges (-4 V to -20 V or -2 V to -18 V) relative to the -21 VDC to -32 VDC supply limits. Low internal signal distortion maintains high cross-talk suppression during dual-axis radial vibration installations on high-speed shaft journals.

Frequently Asked Questions

Q: How is the signal converter output influenced by supply voltage levels?

A: The CON041 converter requires a regulated negative DC supply (-23 VDC to -32 VDC for -4 VDC to -20 VDC output, or -21 VDC to -32 VDC for -2 VDC to -18 VDC output). Operating outside these supply rails limits linear voltage swing and degrades dynamic measuring range.

Q: What mounting hardware and physical protection considerations apply to the converter housing?

A: The converter housing is constructed from ALMgSi 0.5 F22 aluminum alloy with an IP20 protection class. It must be mounted inside a protected NEMA/IP65 junction box or control cabinet using the four provided M5x20 screws to safeguard against dust and moisture ingress.

Field Installation Guidelines

• Target Surface Clearance & Runout: Ensure the target shaft surface is free of scratch marks, burrs, and magnetized spots. Maintain mechanical side clearance around the probe tip to prevent false electromagnetic loading.
• Converter Cabinet Installation: Secure the CON041 converter unit using 4 x M5x20 screws onto a rigid mounting plate inside an enclosure to protect its IP20 aluminum body from conductive dust and fluid splashes.
• Cable Shielding and Termination: Connect all extension cable shields strictly at the monitor panel terminal block to establish a single-point earth ground, eliminating parasitic ground loops across the -20 VDC measurement circuit.