Begin calibration by pressing and
holding the following buttons for 5
seconds: FiO
2
up arrow, FiO
2
down
arrow, alarm silence button.
C.
After holding the buttons for 5
seconds, the device will enter
sensor calibration mode. While the
sensor is calibrating, the CAL SEN
message will illuminate as shown in
the picture. The calibration may take
up to two minutes.
D.
Turn off the device.E.
2. Oxygen sensor calibration
The oxygen sensor should be calibrated once every 3 months.
To calibrate the oxygen sensor:
A.
Turn on the device.B.