6. Insert the test bottle with 5% CO2 and 6% O2 into the Sensor Tester. Use the
menu-function ‘PCO2 Settings / Calibrate Sensor’ or press the ENTER Button
twice to start a calibration. Record PCO2 (5%) and PO2 (6%), i.e. the PCO2/PO2
values just before termination of the calibration. After the calibration is finished
please wait 6 minutes (this is to ensure that no gas leak is present in the Docking
Station of the SenTec Sensor Tester).
Note: If you are using an SDM for the Slope Test and in case of an OxiVenT™
Sensor the message `Sensor Problem 73´ appears on the SDM at this stage. This
is an expected behavior of the sensor.
7. Compare the measured PCO2 (5%) and PO2 (6%) with the values expected for
the respective local atmospheric pressure (see Slope Test Control Table). PCO2
(5%) should be within 5_min and 5_max. PO2 (6%) should be within 6_min and
6_max.
8. Remove the sensor from the Docking Station of the Sensor Tester, insert the
sensor into the Docking Station of the SDM and use the menu-‘PCO2 Settings /
Calibrate Sensor’ to start a calibration (with 8% CO2, 12% O2).
Note: In case of an OxiVenT™ Sensor the message `Sensor Problem 73´ will
disappear from the SDM`s display at this stage.
9. Insert the test bottle with 30% CO2 and 21% O2 into the Sensor Tester. Use the
menu-function ‘PCO2 Settings / Calibrate Sensor’ or press the ENTER Button
twice to start a calibration. Wait until calibration is finished and record PCO2
(30%) and PO2 (21%), i.e. the PCO2 value just before termination of the
calibration.
Note: If you are using an SDM for the Slope Test and in case of an OxiVenT™
Sensor the message `Sensor Problem 73´ appears on the SDM at this stage. This
is an expected behavior of the sensor.
10. Compare the measured PCO2 (30%) and PO2 (21%) with the values expected
for the respective local atmospheric pressure (see Slope Test Control Table).
PCO2 (30%) should be within 30_min and 30_max. PO2 (21%) should be within
21_min and 21_max.
11. In case of an OxiVenT™ Sensor: In order to clear the message `Sensor Problem
73´ you must do either of the following: a) power-cycle the SDM; b) connect the
OxiVenT™ Sensor to a different SDM; or c) perform a calibration with the
standard gas concentration (i.e. with 8% CO2, 12% O2).
12. If you have used one single SDM for the Slope Test, always perform a calibration
with the standard gas concentration (i.e. with 8% CO2, 12% O2) at the end of
the Slope Test.
If the readings are outside the respective limits replace the sensor and
report to SenTec the sensor behavior/replacement.
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