13
13
Calibration (CAL):
Both zero and span adjustments are made
through the menu. (For complete calibration
details of the GXLdp without using the Spool
Cal option, refer to the RECAL section- page 8).
A 90-degree clockwise rotation of the
SpoolCal key places the unit into ‘CAL’ mode,
this isolates the GXLdp from the process
pressure.
The RECAL function in the GXLdp menu pro-
vides the user the ability to field calibrate the
product. The most recent factory calibration
is permanently retained in memory and can
be recalled at any time.
Once you enter the Re-Calibration (RECAL)
Mode you will have the following options:
1.
FACT
– Factory Calibration
2.
NEW
– New Field Calibration
3.
FIELD
– Field Calibration
Note:
On initial calibration, Field Calibration
will not show in the menu. To perform the ini-
tial field calibration you will choose New (New
Field Calibration). Once you have saved the
New Calibration, Field Calibration will appear
the next time you enter Calibration Mode.
Factory Calibration (FACT)
Enter Factory Calibration to reset the unit to
its most recent factory calibration parameters.
1. Press the Menu/Enter button and
scroll using the up or down arrow buttons
G H
until ‘RECAL’ is flashing on the dis-
play. Then press Menu/Enter again.
2. Then the menu choices will be FACT/
FIELD/NEW. Press the up or down arrow
buttons
G H
until ‘FACT’ is flashing on
the display.
3. When ‘FACT’ is flashing on the display,
press the Menu/Enter button .
4. Then with ‘SAVE’ flashing on the display
press the Menu/Enter button .
5. This will restore the most recent factory
calibration.
6. If ‘SAVE’ is flashing and you do not wish
to ‘SAVE’ the factory calibration, use the
up or down arrow buttons
G H
to scroll
to ‘CANCL’ and while ‘CANCL’ is flashing
on the display, press Menu/Enter
which will return you to the main menu.
New Field Calibration (NEW):
Enter New Field Calibration if you wish to
perform a field calibration of the GXLdp.
1. Press the Menu/Enter button and
scroll using the up or down arrow buttons
G H
until ‘RECAL’ is flashing on the
display. Press the Menu/Enter Button
.
2. There will be three menu choices FACT/
FIELD/NEW. Scroll using the up or down
arrow buttons
G H
until ‘NEW’ is flashing.
3. When ‘NEW’ is flashing on the display,
press the Menu/Enter Button .
4. ‘ADJST/ZERO’ will now be flashing on the
display. This will allow you to calibrate the
Zero value for the GXLdp.
5. Apply zero pressure to the Hi and Lo
ports. This can be best accomplished
by shorting the HI and LO ports on the
SpoolCal
TM
actuator tool using the silicon
tubing supplied.
6. Using the up or down arrow buttons
G H
scroll until the display reads zero. Then
press the Menu/Enter button . The
unit is now zeroed.
7. ‘ADJST/SPAN’ will now be flashing on the
display.
8. Remove the silicone tubing from the
SpoolCal
TM
actuator tool.
9 You will need an external pressure source
to adjust the span setting.
10. Connect tubing from the pressure source
to both the Hi and Lo pressure ports of
the SpoolCal
TM
actuator tool.
11. Using the external pressure source,
increase the pressure to the full-scale value
of the GXLdp. Then scroll using the up or
down arrow buttons
G H
until the display
reads the same as the pressure reference.
