Measuring ventilation ratios
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IMT Analytics AG
8.5.3
Pressure curve upstream of the Y-piece
Now here the standard triggers can again be used for the pressure curve:
(> 1 mbar / < 1 mbar).
Naturally here too it is important to ensure that the trigger is signif-
icantly above the noise of the baseline. Otherwise the trigger value
must be increased.
In the FlowLab software it is very easy to determine with the aid of the cursor where
the trigger should be placed (
7.5.3 Cursor
).
Basically, in measuring technology it is always possible to deviate from the standard
variant in order to achieve an even more accurate result. However, it must be borne
in mind that with the settings discussed so far it is possible to achieve very accurate
results that surpass the accuracy of all ventilators.
Measuring errors due to the system as a whole occur both in the ventilator and in
FlowAnalyser. However, the values indicated can vary because what was measured
and compared may not be exactly the same.
8.6 Special cases
