26
Turn the respiratory pressure meter on to the SNIP position.
Very slowly fill the syringe until a negative pressure of between 200
and 300cm is obtained on the manometer.
Check that the reading on the respiratory pressure meter is within 3%
of the manometer reading.
If adjustment is required then the following procedure must be
followed.
The calibration may only be adjusted in a positive direction as the
meter monitors the peak pressure value. Therefore if the respiratory
pressure meter reading was greater than the manometer reading the
calibration screw must be turned anti-clockwise a few turns before
calibration is attempted.
Serial
port
Calibration
screw
Connect the respiratory pressure meter to the manometer as
previously shown. Fill the syringe to obtain the required negative
To Next Page
Loading...