Treaton MV200, User Manual

Page: 154 / 222

6.7 Check and calibration of the FiO2 oxygen sensors and the metabolism measurement module
6-4
After each disassembly / assembly of the expiration valve, it is recommended to calibrate flow
sensor at the expiration (it. 4.16.3).
6.7 Check and calibration of the FiO
2
oxygen sensors and the metabol-
ism measurement module
The device contains two oxygen sensors - the FiO2 oxygen sensor and the oxygen sensor of
the metabolism measurement module.
To verify the accuracy of measuring oxygen sensors make the following:
•
Connect the device to the oxygen source.
•
Assemble breathing circuit. Connect patient tee to the respiratory bag through intubation
tube.
•
Connect water trap of ventilator with patient tee port by the sampling line.
•
Switch on the device in any mandatory ventilation mode, set the tidal volume V
T
of 400 ml.
•
Monitor the FiO
2
oxygen sensor readings in one of the measurement parameter blocks (by
selecting the value "FiO
2
"). The readings of the metabolism measurement module’s oxygen
sensor can be monitored in the respiratory monitoring window "Metabolism" (can be selected
using the graphic button "Monitoring").
•
By setting different FiO
2
values in the range 21 - 100%, check that the absolute error of the
measured values of FiO
2
does not exceed ± 3%.
If the measurement error exceeds ± 3%, disconnect the device from the oxygen source and ca-
librate the oxygen sensors (it. 4.16.2).
If calibration fails, replace oxygen sensors.
Replacement of the oxygen sensor of metabolism measurement module requires disassembly
of the device and can only be performed by qualified personnel authorized by Triton Electronic
Systems Ltd.
Replacement of the FiO
2
oxygen sensor can be performed independently. For this purpose un-
screw the two screws of the oxygen sensor cover. Carefully take the inspiratory connector as-
sembly, so as not to break off the wires of the connector. Disconnect the sensor power cable.
By counterclockwise rotating unscrew the faulty sensor (Figure 6.4). Install a new sensor (in
some cases, a spare sensor can be included in the delivery kit). Assemble the inspiratory con-
nector in the reverse order. Calibrate the oxygen sensor (item 4.16.2).
Figure 6.4 – FiO
2
sensor replacement
Disposal of electrochemical oxygen sensors shall be performed similarly to batte-
ries and accumulators by collection in specialized containers for further reprocess-
ing according national rules.