Table of Contents
Advertisement
RECALIBRATION
Recalibrate your PneumoCheck anytime a calibration check shows it
to be inaccurate (see ATS recommendation on p. 31).
1.
With the PneumoCheck OFF, connect the 3.0 liter syringe
(stored at the same temperature as your PneumoCheck) to the
pneumotach, portion of the PneumoCheck.
2.
Make sure that nothing is blocking the back end of the
pneumotach.
3.
Flush the syringe back and forth several times through the
PneumoCheck to equilibrate the temperature.
4.
Turn the PneumoCheck ON. When SELECT message is
displayed, select the calibration (CAL) mode (see p. 4).
5.
Pull back the plunger of the syringe when a double beep occurs
and the PULL.BACK message appears.
The PneumoCheck will display the STEADY message, then
6.
RETRIM for approximately 45 seconds while measuring zero
flow through the pneumotach to assure maximum accuracy.
7.
When a single beep and the message DO CAL 1 appears, wait
one second, then push the plunger all the way forward using an
even, consistent motion. This forward stroke should take less
than one second.
The PneumoCheck will display the message BUSY briefly and
8.
then PULL.BACK again. Three maneuvers must be completed
in order to recalibrate the unit: repeat steps 5 and 7 twice more.
Notice that with each subsequent calibration maneuver, the
messages DO CAL 2 and DO CAL 3 will appear instead
of DO CAL 1.
34
Advertisement
Table of Contents
