DeFelsko PosiTector 6000 v.7.3 Full Manual - Manual (Page 13)

10
1-point Calibration Adjustment
Also known as an offset or correction value, there are 4 ways to
perform this adjustment:
(i) Simple Zero Calibration Adjustment
Measure your uncoated part. If the Gage does not read "0" within the
tolerance of the probe being used, lift the probe from the surface and
adjust the display down (-) or up (+) until it reads "0". Measure and
adjust until the average of a series of readings on the uncoated
surface is within tolerance of "0" .
(ii) Average Zero Calibration Adjustment
To establish “0” on a rough or curved surface a preferred method
to (i) is to take several readings on the uncoated part and
average the result.
(a) Select from the Cal Settings menu.
(b) Press (+) to select the number of readings to be used to
obtain an average, typically 3 to 10 readings. The greater the
variation between readings, the more readings should be taken
to obtain an average.
(c) Repeatedly measure the uncoated part. The Gage will wait
2 seconds after placing the probe on the surface to allow the
user to correctly position the probe on the surface. After the last
measurement the Gage will calculate a Zero which represents
the average of all the Zero readings taken.
(iii) Simple Adjustment to a Known Thickness
It is sometimes desirable to adjust the Gage to a known
thickness, such as a shim, rather than adjusting it to zero.
Measure the object. If the expected reading is not obtained
(within tolerance), lift the probe from the surface and adjust the
displayed reading down (-) or up (+) to the expected thickness.
Hold the button down to increase the rate of adjustment.
Cal Settings Menu Cal Settings Menu
Zero
Zero