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II. Basic Operation
Six control keypads are used to operate the instrument:
,
RUN/STOP
,
ENTER
,
BACK
, , .
•
Power button
: Push and hold it for about 2 seconds to turn on the instrument.
After turned on, keep pushing on for about 2 seconds to turn off the instrument.
The instrument will shut off automatically to save the power after about 8
minutes standby or no operation,
•
RUN/STOP
: Start or stop a measuring/sampling operation.
•
: Move the cursor to select desired window page or item.
•
ENTER
: Confirm the current selection or enter parameter or save current
sampling value.
•
BACK
: Change the concentration unit in ppm or percentage or back out of the
selection
The bottom of the enclosure includes
•
USB Interface: Connect to the USB interface to a computer for data downloading,
remote sampling or firmware upgrading. Contact the manufacturer or sale
representatives for availability of these functions.
•
POWER port: An AC adapter plug-in port.
•
Charge Status LED: LED flashes during charge and becomes steady after the
charge finished.
2.1 Measuring Screen
The Measuring Screen is the main screen of the instrument for sampling testing. This
screen can be run at the default settings. It displays the test result and conditions
according to the unit settings. One may wish to change the settings before a
measurement run by pressing up or down arrow to enter into the Setup Screen. An
example of the Measuring Screen is shown in the Figure 1.
