YOKOGAWA ZR22S, User Manual

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<10. Other Functions>
10-19
Enter
Open zero gas valve.
Set flow zero gas to
600ml/min.
Valve opened

Cancel calibration
Manual calibration
F10-19E.ai
Figure 10.19 Manual Calibration Display
(2) Adjust the flow rate and select “Valve opened” in the Manual calibration display.
Check the Trend graph display to see that the measured value is stabilized. Then press the
[Enter] key. The Manual calibration display shown in Figure 10.20 appears.
Enter
Zero calibration
Close the zero gas valve.
Span calibration

End
Manual calibration
F10-20E.ai
Figure 10.20 Zero-point Calibration Complete (in Manual Calibration)
(3) Close the zero gas flow setting valve to stop the zero gas flow. If the valve has a lock nut,
be sure to tighten the lock nut to prevent the any leakage of the zero gas into the sensor
because the valve may become loose during measurement.
10.8.4 Operation After Calibration
No special operation of the instrument is needed after calibration. However, it is recommended
that the pressure reducing valve for the zero gas cylinders be closed because calibration is not
required so often.
IM 11M13A01-02E