Instruction manual

SM425 INSTRUCTION MANUAL 10.0 OTHER FUNCTIONS
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 screen shown in
Figure 10-15. Check the Trend Graph display screen to verify the measured value has stabilized.
Then press the [Enter] key. The Manual Calibration display screen will appear as shown in Figure
10-16. Disconnect the power cord to stop the pump.
Figure 10-16 Manual Calibration Display
<Flow of zero gas>
Initiate the zero-gas flow according to the Manual Calibration display screen shown in Figure 10-17 using
the following procedure.
170 42500001 REV A