OPERATION
2-12
Ready
The unit is ready to start a measurement.
Start Measurement
Press the
[Y/+]
key to start the measurement cycle.
The display will show the site ID and then the gas selected
for measurement.
The pump will start and the reading will
be displayed. The peak and average values will be
automatically reset to zero.
Measurement Display
and
Datalog
Instantaneous readings of the gas concentration in parts per
million (ppm) are updated every second. A flashing
superscript “L” is displayed when datalogging is on.
Datalog information is saved only after one full datalog
period is completed (see Section 4.6.5).
Stop Measurement
Press the
[MODE]
key and the display shows “ STOP?”
Press
[N/-]
to continue measurement and
[Y/+]
to stop the
measurement and datalog event. The pump stops
automatically when measurement is stopped. Peak and
average values for the current measurement can be read in
idle mode until a new measurement is started.
Automatic Increment of Site ID
Every time a measurement is taken, the site ID will be
incremented by one automatically in Survey mode.
Variable Alarm Signal
If the measurement exceeds the low limit, the buzzer and
flashing alarm are activated. The frequency of the alarm is
proportional to the measurement value. At values above
the low alarm, the buzzer and LED will beep and flash
twice per second and above the high alarm limit, three
times per second (See Section 2.5).
