Calibrate Oxygen Sensor - Weinmann VENTIlogic LS Instructions For Use Manual

4. At the oxygen source, set the oxygen flow to the value prescribed by the doctor.
5. Select one of the following procedures depending on whether or not you are using an
oxygen sensor.
With an oxygen sensor
Ensure that the oxygen sensor is connected correctly and has been calibrated
beforehand. The oxygen valve is working correctly if an oxygen concentration > 21 %
is shown in the display and the prescribed oxygen flow rate can be set on the oxygen
source.
Without oxygen sensor
The oxygen valve is working correctly if the prescribed oxygen flow rate can be set on
the oxygen source.

7.3 Calibrate oxygen sensor

7.3.1 General
If oxygen is supplied during therapy, oxygen concentration is measured at the device outlet
port so as to ensure that the patient is always adequately supplied with oxygen.
To ensure the accuracy of the measurement, calibration should be performed daily.
Calibration is necessary in the case of
– unsettled weather (air pressure, temperature) or
– changes in therapy pressure.
Always perform calibration with the device warmed up (approx. 20 minutes after switching
on).
Perform calibration of the oxygen sensor once a day to avoid the weather affecting
measuring results. The device will issue the relevant message each day to remind you to
perform calibration. This message also appears if:
– the device has previously been disconnected from the power supply
– 24 hours have passed since the last calibration
– the oxygen sensor has been disconnected electrically from the device and then
reconnected.
The sensor is calibrated at a proportion of 21 % oxygen (ambient air). To ensure this, the
oxygen supply is deactivated by the safety valve during calibration.
EN
Function check
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