Probe Zero - DAKOTA ULTRASONICS MMX-6 DL Operation Manual

Dakota Ultrasonics
Setting the Zero Point of the MMX-6 DL is important for the same
reason that setting the zero on a mechanical micrometer is important. If
the tool is not "zeroed" correctly, all of the measurements the tool makes
will be in error by some fixed number. When the MMX-6 DL is "zeroed",
this fixed error value is measured and automatically corrected for in all
subsequent measurements. The MMX-6 DL may be "zeroed" as follows:
1) Make sure the MMX-6 DL is on.
2) Plug the transducer into the MMX-6 DL. Make sure that the
connectors are fully engaged. Check that the wearface of the
transducer is clean and free of any debris.
3) The metal probe-disc is on the top end of the MMX-6 DL. Apply a
single droplet of ultrasonic couplant to the face of this disc.
4) Make sure that the MMX-6 DL is in P-E ( pulse-echo mode ) by
pressing the Dual-Multi key to toggle the modes.
Note: The Probe-Zero feature is not used in Echo-Echo Thru-Paint
mode, and has been disabled. If the PRB-0 key is pressed, while
in this mode, "nO" followed by "Prb0" will be displayed.
5) Press the transducer against the probe-disc, making sure that the
transducer sits flat against the surface. The display should show
some thickness value, and the Stability Indicator should have
nearly all its bars illuminated.
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