RKI Instruments GasWatch 2 Manual - Manual (Page 28)

23 • Calibration GasWatch 2 Operator’s Manual
8. Let the gas flow for one minute and then press the POWER/MODE
button. The unit will adjust the span (GW-2C or GW-2H) or zero (GW-
2X) based on the calibration value that was saved in step 5 above.
9. Turn the regulator knob clockwise to close the regulator.
10. Remove the regulator from the gas cylinder and the calibration adapter
from the unit. As soon as the unit makes the calibration adjustment, it
will begin its startup sequence and then enter Measuring Mode.
NOTE: If the gas reading is high enough (low enough for the GW-2X)
when the unit enters Measuring Mode, an alarm condition will
occur. Reset the alarm using the POWER/MODE button when the
gas reading falls below (rises above for the GW-2X) the alarm
point.