PR6423/004-010 is an 8 mm eddy-current probe for non-contact radial and axial displacement, shaft position, eccentricity and speed/key duties. Paired with CON021, the probe becomes a calibrated electrical measuring chain for critical rotating machinery.
The CON021 arrangement uses the self-locking waterproof probe connection associated with PR642x plug-connected versions. Probe, cable, converter and target material must be treated as one chain.
Matched-Chain Profile
Probe
PR6423/004-010, 8 mm eddy-current family
Converter
CON021, plug-connected signal converter
Linear range
2.0 mm / 80 mils
Initial air gap
0.5 mm / 20 mils
Incremental scale factor
8 V/mm, tolerance +/-5% at 0 to 45 C
Minimum shaft diameter
25 mm
Standard target
42CrMo4 / AISI 4140 ferromagnetic steel
CON021 response
0 to 20 kHz (-3 dB), rise time below 15 us
Gap-to-Signal Route
SHAFT Ferromagnetic target
→
PR6423 Eddy-current field
→
CON021 Linear conversion
→
MONITOR Static + dynamic value
Keep the probe suffix, connector type, cable arrangement and converter pairing together. A mechanically compatible probe can still produce the wrong scale or zero when paired with a different converter calibration.
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PR6423/004-010 CON021 FAQ
Can PR6423/004-010 CON021 be mixed with another PR6423 cable version?
Only after confirming connector, total cable arrangement and factory calibration. Similar 8 mm probes are not automatically interchangeable.
Why can PR6423/004-010 CON021 have a correct gap but wrong vibration amplitude?
Static gap does not prove correct scale factor. Converter pairing, target material, cable and monitor scaling affect dynamic amplitude.
What target conditions affect PR6423/004-010 CON021 accuracy?
Shaft material, diameter, surface finish, runout, nearby metal and probe mounting geometry all influence the chain.
What should be recorded before removing PR6423/004-010 CON021?
Capture both full codes, converter serial, probe depth, gap voltage, cable routing, target material and monitor scaling.
How should PR6423/004-010 CON021 be accepted?
Verify DC gap, polarity, linear movement, scale factor, runout, dynamic signal and alarm response.