
31
Using the RespSense II Monitor
Calibration Screen
This screen is accessed through the Configuration Menu (see
Calibration Procedure
The monitor has a built-in zero-point calibration function for CO
2
. Perform the calibration
procedure at least every 6 months, or if the baseline of the CO
2
graph is elevated.
The calibration apparatus (see
) is reusable for approximately 100 times. When the
pellets start to turn purple they cannot absorb any more CO
2
and the calibration apparatus must
be replaced. Dispose of the calibration apparatus in accordance with your local, state, or national
regulations concerning waste materials.
1. Attach a calibration apparatus to the moisture trap.
2. Press
On/Standby
to turn on the monitor.
3. Access the Configuration Menu.
4. Press
Calibration
. Calibration screen (figure 12) displays.
Figure 12. Calibration Screen
5. Press
Calibrate CO2
. The monitor starts the calibration procedure.
6. Calibration takes 15 minutes to complete. When calibration is finished, the monitor returns
to the Configuration Menu.
7. Press
OK
to exit the Configuration Menu.
8. Disconnect the calibration apparatus.
9. Verify calibration:
a. Connect the gas valve, which is already equipped with a T-connector, to a gas bottle
containing 5 Vol% of CO
2
(verifying gas) and the monitor.
b. Verify that the gas valve needle is in the green zone of the dial indicator. If the gas valve
needle is in the red zone, the CO
2
tank is empty and should be replaced.