Instructions for Use RAUMEDIC
MPR2 logO
Manufacturer: zwo-400EN
RAUMEDIC AG, Hermann-Staudinger-Strasse 2, 95233 Helmbrechts, Germany Rev. 9 2020-09-22
Page 53 of 99
4.4.3.8 Technical alarms during partial oxygen pressure measurement
The partial oxygen pressure is a measured quantity dependent on temperature. For this reason,
temperature T2 measured by means of a thermistor is not only used to obtain measured value T2, but also
to compensate the temperature of the partial oxygen pressure. If the T2 temperature measurement is faulty
or defective, then the oxygen partial pressure is determined at the assumed temperature 37 °Celsius. The
pO2 measurement takes place in the temperature range of 32 °Celsius to 42 °Celsius; moreover an
accuracy of -0.5 to +0.3 mmHg is achievable. Check the cable and catheter.
*1
A technical alarm is only given for the T2 temperature measurement, not however for the pO2
measurement. The following error messages may be generated if there is a faulty or defective T2
temperature measurement:
Measuring
location
parameter in
Error messages after the INFO key has been
pressed
Alarm
combination
with pO2
Measured value?
INFO message for T2:
Internal error in temperature channel T2.
Technical
alarm
combination
with pO2
---
INFO message for T2:
No INFO message
Alarm, if
alarm has
been
activated for
T2
combination
with pO2
Sensor?
INFO message for T2:
There is an error in temperature
Temperature channel T2 can be switched off from the
“T2” menu.
Technical
alarm
*1: Please keep in mind that the error mentioned at this magnitude is an additional error (relative to the
specific accuracy; please also refer to 11.1 Technical data
), the way it occurs in measuring very small
physiological partial oxygen pressures (close to 0 mmHg).
The additional display error caused by the fixed temperature compensation at 37 °Celsius is shown in the
following diagram for various clinically relevant partial oxygen pressures.
This document is for information only
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