Cosmed Quark PFT, Manual

Page: 44 / 148

44 - Quark PFT User Manual
Calibrating Sensors
The software allows to automatically calibrate zero, gain and delay of gas sensors. Even
if the program doesn't force you to carry out the calibration we strongly recommend to
execute it before each test.
Running the Calibration program
Start the program and choose Calibration from the Test Menu. The software runs the
Calibration software and the main menu changes accordingly.
Log file
The program creates and updates as default the calibration log file, containing the
conditions and the results of all the calibrations performed by the user.
To access the file select
File/Report File... from the calibration program.
Setting reference values
Before starting calibrating make sure that the system has been configured correctly by
setting the right values of gas concentration of: room air (i.e. 20.95% O
2
and 0.03%
CO
2
), of gas mixture contained in the cylinders and the volume of the calibration
syringe (i.e. 3 litres).
To set the reference values
This operation must be performed only the first time. The next times, the system keeps
stored the reference values entered in this step.
1. Select
Reference Values from the Calibration menu.
2. Type the correct values for the O
2
and CO
2
room air concentration (i.e. 2093 for
20.93%), and do the same for the gas concentration of the calibration cylinder.
3. Type the volume of the calibration syringe (i.e. 3000 for a 3 litres calibration
syringe).
4. Press OK button to confirm changes.