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For the air calibration value (
Ambient Air
), place the oxygen sensor
and the external temperature sensor (if used)
close to the air holes
at the backside of the
FireStingO2
.
Ensure that the
oxygen sensor and the external temperature
sensor (if used) are completely dry
; otherwise the relative
humidity around the sensor will differ from the measured humidity
inside the
FireStingO2
. It is recommended that the device and the
sensor are
placed for >10 min. under constant environmental
conditions
before the calibration is performed.
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
(°C)
. Note that the button
Set Air
will be highlighted as soon as the
oxygen readings are within the expected range for the connected
sensor type.
If all readings have reached their steady state, click on
Set Air
, and
the actual oxygen sensor reading is taken for the air calibration. If
the oxygen reading seems to be out of the expected range, a
warning will be shown offering the possibility to repeat the
calibration. A completed calibration is indicated by the green
indicator
Calibrated at Air
.
Subsequently, insert the oxygen sensor and the external
temperature sensor (if used) into the 0% calibration standard.
Also for the 0% calibration standard 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
(°C)
.
