Preparation Before Calibration; Operating The Span Gas Flow Setting Valve; Operating The Zero Gas Flow Setting Valve - YOKOGAWA ZR22G User Manual

Manual calibration
Open span gas valve.
Set flow span gas to
600ml/min.
Valve opened
 Cancel calibration
Figure 10.15 Manual Calibration Display
(2) Next, adjust the flow rate to 600 ± 60 ml/min using the span gas valve "AIR" (the flow check
ball stops floating on the green line when the valve is slowly opened). To rotate the valve
shaft, loosen the lock nut and turn it using a flat-blade screwdriver. Turning the valve shaft
counterclockwise increases the flow rate.
(3) After adjusting the flow rate, tighten the valve lock nut.
(4) Select "Valve opened" (to start calibration) from the Manual calibration display shown in
Figure 10.15. 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 10.16 appears.
Disconnect the power cord to stop the pump.
Manual calibration
Span calibration
Close the span gas valve.
Zero calibration
 End
Figure 10.16 Manual Calibration Display
<Flow of zero gas>
Cause a zero gas to flow according to the Manual calibration display shown in Figure 10.17.
Manual calibration
Open zero gas valve.
Set flow zero gas to
600ml/min.
Valve opened
 Cancel calibration
Figure 10.17 Manual Calibration Display
(1) Use the needle of the zero gas valve " CHECK GAS " to puncture a hole in the gas cylinder
installed as described in Section 10.7.2. Fully clockwise turn the valve regulator by hand.
<10. Other Functions>
Enter
F10.15E.ai
Enter
F10.16E.ai
Enter
F10.17E.ai
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IM 11M12A01-02E 16th Edition : Mar. 19, 2020-00