RKI Instruments GX-2003 Operator's Manual download pdf (Page 44)

37 • Calibration Mode GX-2003 Operator’s Manual

4. Press and release the POWER/ENTER button. The single

calibration screen displays for the sensor you selected. The gas

reading flashes.

5. Connect the tubing from the demand flow regulator to the rigid

tube on the probe. Allow the calibration gas to flow for one

minute.

6. If necessary, use the ▲AIR and (SHIFT)▼ buttons to adjust the

reading to match the concentration listed on the calibration

cylinder.

7. Press and release the POWER ENTER button to save the span

value. The LCD will indicate that the calibration has ended, then

the single calibration menu displays.

8. Disconnect the tubing from the GX-2003’s probe.

9. Repeat steps 3 through 8 for any other channels you want to

calibrate. Make sure you use an appropriate calibration cylinder

for each channel.

CAUTION:When calibrating the oxygen channel, verify the concentration

of oxygen listed on the cylinder’s label. For oxygen-free samples

(100% nitrogen for example), set the oxygen zero setting to

0.0%.

10. After the last channel is calibrated, disconnect the calibration

tubing from the probe, then unscrew the demand flow regulator

from the calibration cylinder.

11. With the Single Calibration menu displayed, press the (SHIFT)▼

button until the cursor is next to the ESCAPE menu item.

12. Press and release the POWER ENTER button to return to the

calibration menu.

13. Use the (SHIFT)▼ button to place the cursor next to the NORMAL

OPERATION menu item, then press and release the POWER

ENTER button to return to Measuring Mode.

CH4 CALIBRATION

0% LEL

APPLY GAS

ADJ/ENTER

21:09

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RKI Instruments GX-2003 Operator's Manual Page 44