500-62001-001 Rev.J
Page 17 of 30
Calibration
O
PERATION
Enter the Menu Selection function and
activate the Calibration item.
D
ISPLAY
Calibration
XX.X %
S
TORE
Press any button to return to the %MC
Readings mode.
G
ROUP
M
ENU
A
RROWS
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 L620 factory calibration is
within tolerance limits. If calibration is out of tolerance,
return L620 to factory or repair depot for re-calibration.
Never adjust L620 to this device. Protect CVB from
direct sunlight. Store in cool dry place. Follow these
steps for checking calibration.
1. Enter the Calibration menu item.
2. Hold the meter in midair 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 unit 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 hand meter with the
long axis of the CVB. Press the hand meter sensor in
the center of the CVB and observe the reading. The
correct reading is 20 %MC. If the reading is outside
the range, 18 to 22 %MC, the unit is out of calibration.
Warning
—
There are two (2) hole plugs located on either side of the
L620 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. Also, if adjustment
is attempted, the warranty will be voided.
