TP20
Poor measuring performance
Possible causes
Remedy
Stylus configuration too long or not rigid
Use shorter stiffer stylus configuration.
Poor stylus assembly
Ensure stylus joints are kept to a minimum and the joints are clean
and secure.
Contamination / damage to stylus ball
Inspect for damage, clean thoroughly with solvent.
Trigger force too high.
Use lower force module.
Unwanted triggering during probe or CMM movement
Possible causes
Remedy
Trigger force too low / stylus configuration to heavy
Use higher force module / reduce mass of stylus configuration.
Probe fails to rearm after trigger
Possible causes
Remedy
Trigger force too low / stylus configuration too heavy
Use higher force module / reduce mass of stylus configuration.
Probe reseat failure
Re-trigger probe. If problem persists please return to Renishaw for
service.
Loss of measuring accuracy
Possible causes
Remedy
Mounting not secure
Check that the RTP20 is correctly mounted on the shank and that the
screws are secure.
Check clamping mechanism in the CMM quill is secure for RTP20.
RTP20 not fully locked
Ensure that the thumbwheel / lock lever is turned fully clockwise.
Force imparted to probe module after locking
Re-qualify the probe.
RTP20 worn or damaged
Use only with the specified probe and extension combinations.
Faulty probe module
Check by substitution or return to Renishaw or your supplier.
RTP20 user's guide
www.renishaw.com
Issued 07 2019
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