4 Service Tests and Service Mode
M1207026 4-21
Calibration Procedure 1. To start the Inspiratory Flow Valve Calibration, select “Start”.
2. Reassemble the bellows assembly upon the completion of
calibration.
Remarks With the bellows assembly removed, the output from the inspiratory
valve is routed through the calibration tools to the Airway Pressure
transducer. The calibrated orifice provides a precise restriction to the
flow.
The calibration routine opens the Inspiratory valve stepwise and
reads the resulting pressure at the airway pressure transducer. The
inspiratory flow displayed on the screen for this test is a calculation of
the pressure measured by the airway pressure transducer times a
constant (based on the size of the orifice in the test tool).
The accumulated values represent the output linearity curve for this
particular Inspiratory valve.
The data is stored in EEPROM and is used during normal operation
to compensate for the individual valve’s output characteristics.
M1207027 004 MANUAL−DOC, Technical Reference Manual, Technical Reference Manual for 9100c, English−default
Reproduced from the electronic master in MATRIX
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