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GX-2003 Operator’s Manual Calibrating the GX-2003 • 82

5. Slide the tubing clamp onto the tubing and connect the tubing

onto the sample bag’s inlet. Leave the clamp unclamped for now.

6. Connect the other end of the tubing to the regulator’s or

dispensing valve’s hose barb fitting.

7. 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.

8. Allow the gas to dispense until the gas collection bag is a little over

half full.

9. If a fixed flow regulator without a knob is used, disconnect it from

the cylinder and immediately clamp down the hose clamp to

prevent the release of gas from the gas collection bag. If a fixed

flow regulator with a knob or a dispensing valve is used, turn the

knob clockwise to stop the gas flow, clamp down the hose clamp

and remove the regulator or dispensing valve from the cylinder.

10. Disconnect the tubing from the regulator or dispensing valve.

Calibrating the GX-2003

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

enter it and move on to the next one. The calibration menu displays

with the cursor next to AUTO CALIBRATION.

NOTE: The following screens illustrate a four-gas GX-2003 with both

a % LEL and a % volume combustible sensor as examples

only. Your GX-2003 may display slightly different screens.

>AUTO CALIBRATION

SINGLE CALIBRATION

CONTRAST

NORMAL OPERATION

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RKI Instruments GX-2003 Betreibershandbuch Seite 89