PP Systems TARGAS-1 Operation Manuals page 106

Pressure
Regulator
CO
2
GAS
Cylinder
2. The pressure regulator on the reference source should be set to a very low pressure, such that the
flow rate of excess gas from the open end of the T-fitting should be approximately 250 ml/min.
3. Select the button to the right of the "CO2 Conc (ppm):" text.
4. Enter the CO concentration of the reference gas. This value must match the certified CO
2
concentration of the reference source and be greater than or equal to the anticipated measurement
range of the instrument. For example, if the anticipated measurement range of your samples will be 0
- 350 ppm, the instrument should be calibrated using reference gas with a CO
between 350 – 400 ppm.
5. The TARGAS-1 will then perform a zero. At completion of successful zero, a similar message to the
following will be displayed:
TARGAS-1 Operation Manual V. 1.02
Shut-off
Valve
"T"
To vent
Gas
~ 250ml/min
Gas In
Port
106
2
concentration
2
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