EPRO PR6426/010-140 Eddy Current Proximity Sensors

Configured for shaft displacement and vibration measurement in large rotor turbomachinery applications, the Emerson PR6426/010-140 (PR6426 Eddy Current Sensor Probe) provides direct physical execution.

Hardware Specifications

Rotor Dynamics & Gap Voltage Validation

The eddy-current probe scaling requires precise physical positioning and gap voltage validation relative to target rotor geometry. Calibrated for large shaft diameters (>= 200 mm), the 32 mm sensing tip maintains low signal cross-talk and linear response across a 14 mm dynamic range, meeting API 670 monitoring requirements.

Frequently Asked Questions

Q: What signal conditioning hardware is required to operate the PR6426/010-140 probe? A: The probe operates with a dedicated CON010 converter to process high-frequency eddy-current signals into standardized analog outputs.

Q: Is this eddy-current probe suited for high-pressure industrial turbine housings? A: Yes, the probe features a stainless steel casing with a PEEK sensing tip rated for mechanical pressures up to 6,500 hPa (approx. 94 psi) and IP66 sealing.

Field Installation Guidelines

• Ensure a minimum of 5 full threads of engagement when installing the probe housing into tapped machine casing ports.
• Route PTFE armored cabling through grounded metal conduit away from high-voltage motor leads and variable frequency drive (VFD) power outputs to prevent noise coupling.
• Verify that signal cable shielding is grounded at a single point (typically at the CON010 signal converter or monitor rack) to eliminate ground loops.
• Check physical gap voltage with a calibrated multimeter before final locknut torquing to establish the proper mid-range DC offset.