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interface of environmental concentration test and alarm concentration setting,
and start the sampling air pump to test the current environmental
concentration and display relative data in item ‘Current Environmental Density’.
At the same time, users can set an alarm point in the item ‘Warning Density
Setting’ by choosing the ‘up’, ‘down’, ‘left’ or ‘right’ keys in ‘Alarm
Concentration Setting’. Choose ‘Left’ and ‘Right’ keys to choose different items
and ‘Up’ and ‘Down’ keys for data selection from 0 to 9. Once an alarm point is
set, it will be saved in this item until a new alarm point is set. See Figure 5:
Figure 5
3.5 After an alarm point is set, touch ‘Enter’ on the panel to enter teat status after a
beep is heard. See Figure 6:
Figure 6
