59
Note, that this calibration mode will automatically read the
atmospheric pressure from the internal pressure sensor in the
FireStingO2
. The calibration standards must be therefore exposed
to the same atmospheric pressure (which is given in typical
applications
3
).
For the air calibration point (
Air with 100% Humidity or Air
Saturated Water
), place the oxygen sensor and the external
temperature sensor (if used) into the flask, containing either
water-vapor saturated air or air-saturated water (100% air
saturation).
Then, the temperature of the air calibration standard needs to be
determined. Either, a
Fixed Temperature
is adjusted manually, or
the temperature is read from the external temperature sensor by
selecting
External Temperature Sensor
.
Wait until the oxygen sensor reading is stable by observing the
graph. If
External Temperature Sensor
was selected, ensure also
stable temperature readings indicated at
Temperature Sensor
3
In rare cases and for special applications the calibration standards might be exposed to different
pressures than the ambient air where the
FireStingO2
is positioned. In this case you have to choose the
Custom Mode (chapter 7.1.6) where the calibration pressure can be entered manually.
