Checking The Pressure Gauge Accuracy - Datex-Ohmeda Aespire S/5 Technical Reference Manual

6.6.2 Checking the
pressure gauge accuracy
To
Low-pressure Source
(Syringe)
1009-0356-000 07/04
The accuracy of the airway pressure gauge can be checked by using the
following:
• a low-pressure test device (digital manometer or test gauge) with an
accuracy of ±2% of reading,
• a low-pressure supply source (typically a syringe),
• and an airway pressure gauge test adapter.
1. Ensure that the pressure gauge is zeroed (Section 6.6.1).
2. Remove the upper rear panel.
3. Remove the existing tube from the back of the pressure gauge and connect
the test adapter tube directly to the gauge.
4. Connect a low-pressure supply source (syringe) to one of the open tubes of
the test adapter.
5. Connect a low-pressure test device to the remaining open tube of the test
adapter.
6. Adjust the pressure source to the following pressures as read on the airway
pressure gauge. The test device gauge should read within the values
indicated.
Airway Pressure Gauge
0 cm H O
2
40 cm H O
2
-5 cm H O
2
To
Test Device
To
Pressure Gauge Fitting
Test Device
0 ±1 cm H O
2
40 ±2 cm H O
2
-5 ±2 cm H O
2
6 Calibration
6-25