9
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
of the GXLdp. This can be best accom-
plished by shorting the HI and LO ports on
the GXLdp.
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. You will need an external reference pres-
sure source to adjust the span setting.
9. Connect tubing from the reference
pressure source to both the Hi and Lo
pressure ports of the GXLdp.
10. Using the external reference 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. Note: Span can
be adjusted between 90% and 100% of
the full scale value.
11. Press the Menu/Enter button .
12. The menu will now flash ‘SAVE’ on
the display. If you wish to save the
NEW calibration, press the Menu/Enter
button .
13. If you do not want to save the NEW
calibration, use the up or down arrow
buttons
G H
to scroll from SAVE to
CANCL. With ‘CANCL’ flashing on the
display press the Menu/Enter button
. This will return the GXLdp to the
main menu and the NEW calibration will
not be saved. The unit will maintain its
most recent calibration.
14. Once you have finished a NEW calibra-
tion, this will be stored as the FIELD
Calibration.
Field Calibration (FIELD)
Enter Field Calibration if you wish to recover
the most recent field calibration values stored
in 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. 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 ‘FIELD’ is flashing on
the display.
