GPI GM Serie Guía De Operación página 10

1. To field calibrate, press and hold both CALIBRATE
and DISPLAY buttons for about 3 seconds until you
see FLdCAL. Release both buttons and you will see
Kxxxx.x (where "x" represents the current field-cal
k-factor value). You are now in the field calibration
mode.
2. The far left digit will be blinking. The DISPLAY button
can then be pressed to select the digit location and
the CALIBRATE button can be pressed to scroll the
desired value at the blinking position. Edit the K-factor
shown to the desired value. Acceptable K-factor range
is 0000.1 to 9999.9.
3. After the new value has been entered, momentarily
press and release both buttons. "CALEND" will be
momentarily displayed. Unit is now ready for use.
4. Notice that the upper display line, the "FAC" icon and
all the units of measure have disappeared.
Alternate units of measure are not selectable when the
meter is operating with field calibration. This calibration
is a unique single-point calibration for the meter and/
or application.
T A B L E 1
Model Size
G2_05 1/2 in.
G2_07 3/4 in.
G2_10 1 in.
G2_15 1-1/2 in.
G2_20 2 in.
G2P05 1/2 in.
G2P10 1 in.
G_T-051 1/2 in.
G_T-075 3/4 in.
G_T-100 1 in.
G_T-150 1-1/2 in.
G_T-200 2 in.
G_T-300 3 in.
G_P-050 1/2 in.
G_P-051 1/2 in.
G_P-075 3/4 in.
G_P-100 1 in.
G_P-150 1-1/2 in.
G_P-200 2 in.
GM001 1/8 in.
GM002 1/4 in.
GM003 1/4 in.
GM005 1/2 in.
GM006 3/4 in.
GM007 1 in.
GM010 1 in.
GM015 1-1/2 in.
GM020 2 in.
10
Typical K-Factor
(pulses / gallon)
2500
1100
560
215
100
2400
540
10000
3750
896
350
181
50
10000
10000
3750
896
340
181
5855
3785
1514
424
197
197
136
55
25
NOTE: To return to factory calibration (FAC), press and
hold both CALIBRATE 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.
Field Calibration Procedures
(Correction Factor Method)
If the display was purchased with a meter body then the
field calibration method set at the factory is the Correc-
tion Factor method.
This method allows the user to tweak the factory cali-
bration by a percent that represents application, fluid or
plumbing differences.
1. To calibrate, press and hold the CALIBRATE 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 button selects the position and
the CALIBRATE button toggles this character.
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 remain visible and
selectable – the entered correction will be applied
to all enabled units.
5. To return to factory calibration (FAC), press and hold
both CALIBRATE 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.
Setting 4-20 mA Endpoints
The 4-20 mA endpoint settings are independent from
the display calibration. If you reset the response time
you MUST reset the 4-20 mA endpoints.
All units are shipped with the following items preset:
• 4 mA setpoint = 10 Hz
• 20 mA setpoint = 1000 Hz
• Response time = 0.7 seconds
Any new values you set for these items are automati-
cally saved when the transmitter is powered down, and
automatically restored the next time power is applied.