15-10
The following information is displayed in the menu above.
CO2 The currently measured CO2 content.
Unit: %.
In the field at the right of the CO
2
value, you can select a standard gas containing a certain
amount of CO
2
for calibration.
Options: 3%, 4%, 5%, 6% and 7%.
BAROMETRIC The currently measured barometric pressure.
Unit: mmHg.
SENSOR TEMP The currently measured temperature around the infrared
sensor.
Unit: ℃.
CUR PUMP RATE The currently measured pumping rate.
Unit: ml/min.
SET PUMP RATE The sampling flow rate set by the user.
ZERO CAL This option allows you to zero the CO2 module, so as to
eliminate the adverse affect of the baseline drift in the
process of measurement. Perform zeroing prior to
concentration calibration.
CONFIRM CAL This option allows you to confirm the calibration of the CO2
module.
Calibration Procedure
1. Verify the module enters the ready-to-measure status.
2. Connect a gas bottle with the CO2 sensor connector on the monitor as shown below.
Figure 15-6 Connections for Calibration
Monitor
Gas bottle
T-shape connector opening
to the atmosphere
Decompression
valve
Tube
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