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Chapter 2: Astra 300 Functional Operation
The Spirometry Source
4
Press and start the calibration process.
Empty the syringe for two or more consecutive cycles
(one cycle is equal to emptying and refilling the syringe).
When emptying and filling, the syringe plunger must move
all the volume used as a reference. If this is not done
correctly, the equipment will detect it as «incorrect
maneuvers». Furthermore, this process should be
completed in a regular and uniform manner, without causing
flow rates that are too high or too low. Where this is not
the case, you will be told to repeat the maneuver. The
time for each cycle must be no less than three seconds
and no more than six.
5
The screen shows the expiratory and inspiratory
factors taken by the equipment and, if they are within
2%, will consider the system calibrated. Where this is
not the case, point
4
is repeated.
6
Once calibrated, exit the Calibration Program and
access the Spirometry program to begin the tests.
Note:
If, upon entering the calibration parameters in point
2, “Calibration Volume (l): 0” is allocated, the system
takes the calibration factors “EXP F. and INS F.:1.00”,
corresponding to original factory calibration. This
calibration should only be used as a guideline and in
the event of a syringe not being available.