500-62201-001 Rev. M
Page 21 of 33
Calibration
Operation
Enter the main menu and activate the
Calibration item.
Display
Calibration
xx.x %
STORE
Press the
STORE
button to return to
the readings mode.
GROUP
Press the
GROUP
button to return to
the readings mode.
MENU
Press the
MENU
button to return to the
readings mode.
ARROWS
Press the
ARROW
button to return to
the readings mode.
Checking Calibration
Calibration is factory set.
It may be checked by using a
Wagner Calibration Verification Block (CVB) (P/N: 840-
60130-003). Use only to verify L622 factory calibration is
within tolerance limits. If calibration is out of tolerance,
return L622 to factory or repair depot for re-calibration.
Never adjust L622 to this device. Protect CVB from
direct sunlight. Store the CVB in a cool dry place. Follow
these steps for checking calibration.
1. Enter the Calibration verification mode using the
MENU button.
2. Hold the L622 in mid-air so the bottom is several feet
from any object. The correct reading for air is .0
%MC. If the reading is outside the range, -2 to 2
%MC, the L622 is out of calibration.
3. Place the CVB, rubber feet down, on a metal surface:
such as a file cabinet, a piece of sheet metal, etc.
4. Orientate the long axis of the L622 with the long axis
of the CVB. Press the L622 sensor in the center of the
CVB and observe the reading. The correct reading is
20.0 %MC. If the reading is outside the range, 18.0 to
22.0 %MC, the L622 is out of calibration.
Warning
—
There are two (2) hole plugs located on either side of the
L622 handle. Do not remove these plugs because the adjustments
below them are factory set and should not be adjusted by the
customer. If adjustment is attempted, the unit will not be in
calibration and will require factory re-calibration.
