GX-2012 Operator’s Manual
Bump Testing • 157
Bump Testing
NOTE:
The
BUMP DSP
menu item in Maintenance Mode is factory set to OFF. The
BUMP
menu item will not appear unless
BUMP DSP
is set to ON. See
“Turning the Bump Test Function On or Off” on page 115 for instructions.
NOTE:
The GX-2012 uses parameters defined in the
BUMP--SET
menu item of
Maintenance Mode while performing a bump test. To view or update these
parameters, see “Updating the Bump Test Parameters” on page 116.
NOTE:
If the combustible gas channel(s) are calibrated to a gas other than methane, use
an appropriate multigas cylinder.
From Measuring Mode, enter Calibration Mode by pressing and holding the (SHIFT)
button, then pressing the DISPLAY(ADJ) button and releasing both. If the unit prompts
you for the password, enter it by using the AIR
and (SHIFT)
buttons to select each
password number and then pressing and releasing POWER ENTER to confirm it and
move on to the next number. To go back a number, press and release the RESET
SILENCE button. The factory set password is the same as the factory set password for
Maintenance Mode: 2102. You can change the password by entering the
PASSWORD
menu item in Maintenance Mode. See “Turning the Password Function On or Off” on
page 128. If you enter an incorrect password, an error screen will display.
To return to normal operation, press and release the RESET SILENCE button. You may
then try to reenter Calibration Mode.
MAINTENANCE will appear along the top of the screen once you have entered
Calibration Mode. The first item in the calibration menu, AIR CAL, displays.
1. Slide the tubing clamp onto the tubing and connect the tubing onto the sample bag’s
inlet. Leave the clamp unclamped for now.
2. Connect the other end of the tubing to the regulator’s or dispensing valve’s hose barb
fitting.
3. Fill the gas collection bag by screwing the fixed flow regulator onto the calibration
cylinder or by screwing the dispensing valve onto the calibration cylinder and turning
the knob counterclockwise.
NOTE:
If the regulator has no on/off knob, then gas will begin to flow at 0.5 LPM as
soon as the regulator is connected to the cylinder.
4. Allow the gas to dispense until the gas collection bag is a little over half full.
Err
PASSWORD
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1.800.544.2843
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