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No. 99MBC071A
4. SETTING UP THE MEASURING CONDITIONS
IMPORTANT Calibration
1. Before performing a calibration, always perform the necessary setup for the
resolution. If this order is reversed, the set calibration value may be canceled and
the measurement accuracy is not guaranteed.
2. Canceling the HIGH CAL value will also cancel the LOW CAL, offset, and master-
ing values.
3. With only a LOW CAL setup value the compensation calculation does not take
place. This calculation will start when a HIGH CAL (or HIGH CAL and LOW CAL)
value is set.
If a HIGH CAL value is set, the CAL guidance ( ) will turn on in the display unit.
4. A calibration gage is important in that it is critical to the accuracy of the Measuring
Unit. Wipe dust and oil from the gage with a cloth soaked in alcohol or thinner
before using it.
After use, apply a rust preventive oil to its surfaces and store it carefully in a
dedicated case.
5. To confirm the HIGH CAL or LOW CAL setup value, press either the
H.CAL
or
L.CAL
key to enter each setup mode, and press the
H.CAL
(and
SET
) or
L.CAL
(and
SET
) key to exit to the ready state after the confirmation is over. Do not
perform the setup operation in the confirmation process of the setup data.
6. On the user-supplied calibration gages, the dimensional ratio of a High CAL gage
to a Low CAL gage should be greater than 1.2. Calibration performed with the
calibration gages with diameters that are too close each other may reduce the
measuring accuracy. The calibration gage should be the one which is made of the
same or similar material as that of the workpiece. If a calibration gage of different
material is used, error may be involved in measurement due to the difference in
surface textures or properties.
7. For calibration measurement, no restriction exist for segment specification. If a
gap or displacement needs to be precisely measured, a thickness gage can be
used for calibration. (There will be a slight difference in measured data between
those from diameter and gap depending on the segment specified for calibration.)
