CO2 Meter SAN-20 Посібник користувача - Сторінка 4
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THEORY OF OPERATION
The SAN-20 Personal Safety O2 Monitor determines the concentration of oxygen in air samples
using the principle of fluorescence quenching by oxygen. Air reaches the sensor by diffusing
through the openings of the unit. Normal air movement is enough to carry the sample to the
sensor. It has negligible cross sensitivity to other gases. The monitor benefits from low power
operation while providing a much longer lifetime due to the non-depleting sensing principle.
MONITOR
1.
Visual alarm/strobe
2.
Front facing sensor
3.
Charging indicator
4.
LCD display
5.
Power button
6.
Temperature units
switching button
7.
USB charging inlet
(bottom side)
8.
Heavy duty metal clip
9.
Factory reset button
LCD DISPLAY
1.
Danger low oxygen alarm indicator
2.
Warning high oxygen alarm indicator
3.
Battery indicator
4.
O2 concentration
5.
O2 concentration units (%)
6.
Calibration icon
7.
Man down alarm
8.
Air Temperature
9.
Temperature unit
(Fahrenheit or centigrade degrees)
10. % Relative Humidity
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