Specifications

CO2 Analyzer 2810/2815/2820
Instruction 19-9222
16
CO2 Analyzer 2810/2815/2820
Instruction 19-9222
17
Wait until the analyzer automatically switches to its ‘N2/Gas’ screen
before proceeding.
f1-> N2
f3-> Gas
3. Press the f
3
button to display the Gas Calibration screen.
f1->05.0
00.0
The top line shows the preset calibration gas value that must be ap-
plied to the analyzer’s inlet. The bottom line shows the current CO
2
reading.
Note: The analyzer is most accurate around the calibration
gas value. If the analyzer, however, is routinely used to moni-
tor CO
2
levels that are much higher or lower than the preset
value, then it is recommended that the analyzer be calibrated
on a concentration of gas that is close to the gas level being
monitored. This operation requires that the preset calibration
gas value be reset higher or lower using the optional BACH-
COM software, version 2.22 or higher.
4. Remove the 100% N
2
cylinder (if used); then attach a CO
2
calibration
gas cylinder to the inlet of the analyzer as shown in Figure 3. The ap-
plied CO
2
concentration must equal the gas value displayed in the top
line of the Gas Calibration screen.
Important: Do not attempt to calibrate the analyzer if the
pressure gauge closest to the tank reads below 5 psi.
5. Adjust the regulator attached to the gas cylinder for an outlet pressure
of 2 psi (equivalent to a flow rate of approximately 120 cc/minute). Ob-
serve that the gas level displayed on the second line of the Gas Calibra-
tion screen should slowly rise to the value displayed in the top line.