Battery Replacement - GPI 09 Computer Electronics Guía De Operaciónes

Field Calibration
Necessity
Field Calibration and Factory Cali-
bration are defined in the Operation
Section. Factory calibration set-
tings are programmed into each
computer during manufacturing,
using stoddard test solvent at 70° F
(21° C) for Low Flow and One Inch
meters and water at 70° F (21° C)
for Two Inch meters. Settings are
correct for light liquids such as water,
gasoline or diesel. Readings using
the Factory Calibration (FAC) may
not be accurate in some situations,
for example, "heavy" liquids such as
motor oil under extreme temperature
conditions, non-standard plumbing
configurations or with fluids other
than those mentioned above.
For improved accuracy under such
conditions, the computer allows for
"field" calibration, that is, user entry
of custom calibration parameters. A
"single point" calibration may yield
acceptable accuracy when used in
a non-standard application.
Field Calibration
Procedures (Correction
Factor Method)
1. To calibrate, press and hold CALI-
BRATE and DISPLAY buttons for
about 3 seconds until you see
FLdCAL. Release both buttons
and you will see CF-00.0. You
are now in the field calibration
mode and values from -99.9% to
+99.9% can be entered.
2. The +/– position appears either
as an "underscore" character for
plus, or as a "hyphen" character
for minus. The DISPLAY but-
ton selects the position and the
CALIBRATE button toggles this
character.
4
3. The DISPLAY button can then
be pushed to select the numeric
positions. Press the CALIBRATE
button to scroll from 0 to 9. Enter
the percentage of change you
want the display to correct. When
satisfied with the value, press
both CALIBRATE and DISPLAY
buttons simultaneously. CALEnd
will be displayed and unit will go
back to normal operation, less the
FAC (factory calibration) icon.
4. All enabled units-of-measure re-
main visible and selectable – the
entered correction will be applied
to all enabled units.
5. To return to factory calibration
(FAC), press and hold both CALI-
BRATE and DISPLAY buttons for
about 3 seconds, until FAcCAL is
displayed. Then release buttons.
Unit should return to normal op-
eration and FAC icon is visible.
MAINTENANCE
During daily use, these meters are
virtually maintenance-free. Don't let
liquids dry inside the meter. If liquids
have dried and caked on the rotor,
clean the internal parts with a pen-
etrating lubricant such as WD-40
a cleaning solvent. Do not submerge
the meter. A soft brush or small probe
can be used to remove residue from
the rotor. Do not blow compressed
air through the meter.

Battery Replacement

The computer display is powered by
two lithium batteries which may be
replaced while the meter is installed.
Battery life is 5 years. If you need to
store the unit, removing the batteries
will extend battery life. Check the
batteries and clean the terminals at
least every year to ensure proper op-
eration. When display becomes dim,
or
®