GPI 03 Guía De Operaciónes página 4

The use of a uniformly dependable,
accurate calibration container is
recommended for the most accurate
results. For best results, the meter
should be installed and purged of air
before field calibration.
Due to high flowrate, it is strongly
recommended that calibration of
two inch meters be completed with
a combination of volume and weight
using fine resolution scales.
Field Calibration with
Computer Display
Field Calibration and Factory
Calibration are defined in the
Operation Section. Factory calibration
settings are programmed into each
computer during manufacturing,
using stoddard test solvent at 70° F
(21° C). 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 (Dispense/
Display Method)
1. To field calibrate, press and
hold CALIBRATE and DISPLAY
buttons for about 3 seconds until
you see FLdCAL. Release both
buttons and you will see dd000.0.
You are now in the field calibration
mode.
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2. Dispense a known amount of fluid
at a flowrate representative of the
application. Any amount between
.1 and 999.9 units can be used.
Display will count up while fluid
is flowing through the meter.
3. The DISPLAY button can then be
pushed to select the digit location
and the CALIBRATE button can
be pushed to scroll the desired
value at the blinking position.
Edit the amount shown with the
value that was dispensed above.
Values from 000.1 to 999.9 can
be entered.
4. 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.
5. The meter will now be operating
with a custom calibration number
unique to the above dispense
procedure. No unit of measure
(gallon, litre, etc.) icon will be
highlighted.
NOTE: To return to factory calibration
(FAC), press and hold both
CALIBRATION and DISPLAY
buttons for about 3 seconds,
until FAcCAL is displayed. Then
release buttons. Unit should
return to normal operation and
FAC icon is visible.
NOTE: If the field calibration mode
is entered and NO fluid is
dispensed, then upon leaving, the
computer will use data from the
last successful field calibration.
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