Dräger NAD, Инструкция оператора, Страница: 18 / 36

3-8
3
Operating Instructions
Calibration
Function
Keys An NAD Omicron monitor has three separate calibration operations; “21%
O
2
Calibration Operation” on page 3-8 , “100% O
2
Calibration Operation”
on page 3-8 , and “Pressure and Flow Calibration Operation” on page 3-8 .
To prevent accidental or unexpected interruption of respiratory monitoring
that occurs during calibration, you must confirm that you intend to
calibrate the instrument. To do this, you must press and hold any of the
calibration keys for at least 3 seconds. This starts the calibration sequence
for that key’s function. To initiate another calibration sequence, you must
release all calibration keys for at least two seconds before pressing another
calibration key.
21% O
2
Calibration
Operation
Follow these steps to execute the 21% Calibration Operation:
1. Expose the oxygen sensor to room air for at least 30 seconds.
2. Press the 21% O2 Cal key for three seconds to begin the oxygen
calibration.
After three seconds, the monitor will display
CALIBRATE, which
indicates that it has completed room oxygen calibration.
100% O
2
Calibration
Operation
Follow these steps to execute the 100% Calibration Operation:
1. Expose the oxygen sensor to a gas environment of 100% oxygen for at
least 60 seconds.
2. Press the 100% 02 Cal key for three seconds to begin the second part of
the oxygen calibraton.
After three seconds, the monitor will display
CALIBRATE , which
indicates it has completed the 100% oxygen calibration.
Pressure and
Flow
Calibration
Operation When the monitor is first energized, it will display pressure and volume
parameters even though you have not initiated a zero calibration. Without
performing a flow calibration, the monitor may not achieve its specified
accuracy. After 15 minutes, the monitor will display
FLOW CAL to remind
you to perform a zero calibration.
The following steps describe the Pressure and Flow Calibration Operation:
1. Pressing the Flow Cal key for three seconds starts a calibration process
that sets zero values for both the pressure and flow channels. It is used
to reduce measurement inaccuracies due to temperature drift or other
external environmental variations.
2. To ensure flow accuracy, reduce the air flow to a minimum and remove
the patient hose at the exhalation valve. Turn the ventilator off and
minimize any movement of the patient or the monitor hoses.
3. When the calibration process starts, the monitor will display
CALIBRATE while it establishes the zero set point for the pressure
channel.
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