Checkline MX-5DL User Manual

Page 17

MX-5 DL Ultrasonic Thickness Gauge

Probe Zero

Setting the Zero Point of the MX-5 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 MX-5 DL is "zeroed", this fixed

error value is measured and automatically corrected for in all subsequent

measurements. The MX-5 DL may be "zeroed" as follows:

Performing a Probe-Zero

1) Make sure the M X-5 DL is on.

2) Plug the transducer into the MX-5 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 MX-5 DL. Apply a

single droplet of ultrasonic couplant to the face of this disc.

4) 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.

5) While the transducer is firmly coupled to the probe-disc, press the

PRB-0 key on the keypad. The MX-5 DL will display "Prb0" while it

is calculating its zero point.

6) Remove the transducer from the probe-disc.