Cosmed Q-NRG, User Manual, Page: 36 / 152

34/148 REF C04717-02-91 Q-NRG User Manual, Edition 4.2
Chapter 2 - Installation COSMED srl
Calibration Cylinder Set-up
Q-NRG requires a monthly calibration of both Oxygen and Carbon Dioxide sensors using a reference gas. COSMED
provides a 3.7L pressurized Gas Cylinder with a known and certified gas mixture (16% O2, 5% CO2 and N2 balance).
To set-up the calibration cylinder please refer to the instructions below.
A Gas Cylinder Valve D ON/OFF Valve
B Pressure Regulator Output (Second Stage) E Pressure Adjustment Knob
C Calibration Hose
WARNING: Be sure that the Gas Cylinder is always safely secured in the cylinder holder of the optional cart (refer to
cart instructions) or in another appropriate manner in accordance with local regulations.
To Install the Pressure Regulator on the Gas Cylinder
1. Zero the Pressure Regulator by rotating the Pressure Adjustment Knob completely counter-clockwise.
2. Close the Pressure Regulator ON/OFF valve (perpendicular to hose).
3. Connect the Pressure Regulator to the Gas Cylinder.
4. Appropriately tighten the “T” screw, by hand.
Note : A new white washer should be placed between the Cylinder and the Pressure Regulator whenever the
Gas Cylinder is replaced.