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Numerics Are Displayed With A; If The Co Wave Is Clipped; If The Co Values Are Low - Philips M3046A M2 Instructions For Use Manual

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Troubleshooting the CO
If the CO
2
numerics are
displayed with
a ?
If the CO
2
Wave is
Clipped
If the CO
2
Values are
Low
274
Measuring Carbon Dioxide Using the Microstream Method (M3015A)
Measurement
2
CO
AUTO ZERO
2
CO
CHANGE SCALE
2
If the patient is not intubated and a nasal FilterLine is used, the
CO
values will always tend to be lower than with intubated
2
patients. If values appear extremely low, check whether the
patient is breathing through the mouth or whether one nostril is
blocked.
For intubated patients:
1. Check that the FilterLine is connected firmly to the airway
adapter and the CO
connections can cause leakage resulting in low readings.
2. Check the humidity correction setting which is displayed in
the CO
2
saturated) mode the readings correspond to the CO
pressure in humidified gases. These readings are about 6%
lower than the readings in STPD (standard temperature
pressure dry) mode.To change the humidity correction
setting see "Extra Configuration for the CO
on page 370.
3. If above checks do not change the situation, try a new
FilterLine.
If values are still low, contact your biomedical department or Philips
representative to have the accuracy of the instrument checked.
The automatic zero process is running.
This takes typically 10 seconds up to a
maximum of 30 seconds. During this time
the CO
values may not be accurate.
2
If the auto zero takes longer than 15
seconds, an INOP is triggered and the
numerics will show -?-.
The EtCO
2
currently selected. Select a larger scale to
see the whole wave.
input on the M3015A. Loose
2
setup. In BTPS (body temperature pressure
value is greater than the scale
Measurement"
2
partial
2

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