Operation
Calibrating the Meter
NOTE: This unit has been calibrated at the factory to
dispense lubricating oils; it should not require
additional calibration during installation. If this unit will
be used to dispense antifreeze, and accuracy must be
greater than plus or minus 2 percent, it is
recommended that you use a calibration factor of
7230.
You must ground yourself to a true earth ground
while calibrating the meter. You must keep
yourself constantly grounded when you touch
any electronic components inside the cover of
the dispense valve. To order a grounding wrist
strap, order Part No. 112–190.
This is the procedure for calibrating the meter and
setting whether the display counts up from zero or
down from the preset amount in Preset mode.
NOTE: All units count up from zero in Non-Preset
mode.
See Calculating the Calibration Factor on page 11
for instructions on assessing the accuracy of the meter
and calculating the proper calibration factor.
1.
Remove the six screws (21) (see the Parts
Drawing on page 17) that hold the two halves of
the cover together, and open the unit to gain
access to the Calibration button.
2.
Locate the calibration button inside the unit, as
shown in Fig. 5.
Calibration
button
Fig. 5
06186
3.
Press the Calibration button.
The calibration factor is shown on the display, as
shown at top right.
06044
06815
CAL
4.
Press the Calibration button again.
The first digit blinks, which indicates that you can
change it.
5.
Press any button on the keypad to advance the
blinking digit by one until the digit is set to the
desired amount.
6.
Press the Calibration button again.
The next digit blinks, which indicates that you can
change it.
7.
Repeat steps 5 and 6 until all the digits are set.
When all the digits are set, either UP On or
UPOFF is shown on the display. In UP On mode,
the unit counts up from zero. In UPOFF mode, the
unit counts down from the preset amount.
8.
Press any button on the keypad to toggle between
UP On mode and UPOFF mode.
9.
Press the Calibration button again.
The unit returns to Normal mode.
10. Press the Calibration button again.
After about 15 seconds, the unit makes an audible
beep to indicate that the changes have been
saved.
NOTE: You can view the calibration factor at any time:
Press the Total button repeatedly to see the Total, the
R-Total, and the calibration factor.
Summary of Contents for EM 238-451
Page 19: ...Notes...
