9 Anesthetic Gas Module Checking and Calibrating the Anesthetic Gas Module
194
Conversion: 1 mmHg = 1.33 hPa = ? inHg
NOTE Only perform a Barometric Pressure check and calibration with the top cover closed. Light and electro-
magnetic interference may affect the measurements. Pressure calibration is not possible during warm-
up.
Complete the following to steps to perform a barometric pressure check and calibration:
1 Get the absolute barometric pressure at your hospital location.
2 Enter the service mode of the monitor and let the Philips M1026A Anesthetic Gas Module
complete the warm-up phase (the
GA WARMUP INOP disapears).
3 In the Setup Gas Analyzer menu, select Service Window.
4 Select Calibration to access the Gas Analyzer Calibration window.
Check 5 Check if the barometric pressure displayed next to the Press label. in the calibration window is
within the tolerance limits. A zero calibration is automatically started in order to display the
calibrated pressure value. This value is updated with each following zero calibration.
Calibration 6 Enter the Setup Gas Analyzer menu and select Start Press. Cal.
7 Select the value representing the current absolute barometric pressure and confirm when prompted
8 After calibration has been completed, check if the barometric pressure displayed next to Press. in
the calibration window is within the tolerance limits.
Span Calibration Check
NOTE The Philips M1026A Anesthetic Gas Module should run for at least 30 minutes before continuing
with the following calibration procedures. This is to allow the module to reach a stable measurement
condition. The Analyzer Warmup timer in the Calibration window indicates the time span since the
last power on.
Only perform Span calibration checks when the top cover is closed. Light and electro-magnetic
interference can affect the measurements.
p
barometric
p
corrected
p
typical
760mmHg
--------------------------
where:
×
p
corrected
ambient air pressure corrected to sea-level
p
typical
typical atmospheric pressure at a given altitude
=
=
=
Measured Value Toleran c e
Barometric Pressure +/- 5 mmHg
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