BCI Capnocheck Plus - Page 13

Fi0, ADC
Batt V
CO; mmHg
CO2 %
k1,k2
Chapter 2: Field Service Menu
The FiO, Analog-to-Digital converter reading in counts.
When the FiO. sensor is not plugged in, this reading must be
close to zero. If the FiO2 sensor is replaced with a short, this
value is around 350 counts. If the FiO2 sensor is plugged in,
this value will increase with an increase in O; concentration.
The voltage on the battery terminals as seen by the system
Analog-to-Digital converter. If the battery is charging, this
voltage will increase to more than 7 V. If the unit is running
on the battery, this voltage will slowly drop from 6 to 5 V.
Current CO, reading in mmHg.
Current CO: reading in percent. For example, if 10% CO; gas
is supplied, expect to see a value in the range of 9.6% to
10.4%.
Calibration constants. These numbers reflect the CO, curve:
CO, concentration vs. CO, sensor voltage. If a low/high cal
has been done, expect to see slightly different kl and k2
values.
Capnocheck Plus Service Manual
2-3