The 825P / 850P meter is designed to be re-calibrated
with water for safe handling. Over time, the chamber
inside the meter will wear. Recalibrating the meter with
clean water will insure that Table #1 (calibration table
page 4) is most accurate.
You will need a container of known volume, at least 5
gallons or larger. Do not exceed a 60 gallon container.
1. Press the 2 & 4 buttons simultaneously and hold
for 3 seconds.
2
ON
NOT
FOR
RESALE
7
USE
The display will read the version of the software loaded
in the meter (example: "r1.02").
2. Press button 3 to enter calibration mode.
2
ON
NOT
FOR
RESALE
USE
The unit of measure will be displayed.
3. Press button 3 .
2
ON
NOT
FOR
RESALE
USE
The display will read "FILL".
4. Now dispense water into your container. "FILL" will
flash on the display.
5. After dispensing, press the ON button.
2
ON
NOT
FOR
RESALE
USE
The left digit of the display will blink.
APPENDIX - B
3
4
r1.02
3
4
GAL
3
4
F I L L
3
00.00
QT
Water Calibration
6. Press the 4 button to increment the digit to the
amount of fluid dispensed (example: 05.00). Press the
ON button to move to the right.
ON
Move to Right
If you make a mistake, press button 2 to start back at the
left- most digit.
7. After number is loaded, press the ON button again to
accept.
ON
8. Display now shows
Since you are calibrating with water, accept this by
pressing the ON button again. If calibrating with a fluid
other than water, see Appendix-C. Display will again
show "r1.02".
ON
Note: If the value entered is out of an acceptable range,
the display will read "Err0" and the meter will revert to the
previous settings. See Troubleshooting Guide for more
information.
9. Press 2 to get back to the normal operating mode.
4
12
2
3
3
2
NOT
FOR
CAL
RESALE
4
USE
CAL
.
4
3
2
r1.02
NOT
FOR
RESALE
7
USE
4
Increment Number
4
4