Zero Calibration - Extech Instruments CG304 User Manual

Zero calibration
1. Place the meter on an uncoated section of the material to be
measured or on the reference substrate provided. Use either
the Ferrous or Non‐Ferrous reference as required by the
measurement application.
a. Place the probe on the uncoated substrate and watch the
LCD readings.
b. When the readings appear stable, lift the meter off the
substrate
c. Press the LEFT button to enter menu
d. Press UP/DOWN button to select zero‐point calibration.
e. Press LEFT to enter or RIGHT to return to measurement mode.
f. Press LEFT button to confirm calibration.
2. Press and hold the DOWN button to enter zero‐point calibration of Fe in measuring mode.
3. Press and hold UP button to enter zero‐point calibration of Non‐Fe measuring mode.
Delete Fe or Non‐Fe zero‐point
Press LEFT button to enter menu
1.
Press UP/DOWN button to select calibration
2.
Press LEFT button to enter calibration
3.
Press UP/DOWN to delete zero‐point of Fe or Non‐Fe
4.
Press LEFT to select OK
5.
Press RIGHT to return to normal operating mode.
6.
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