INFICON 2020ComboPRO Portable Photoionization Detector - Manual (Page 77)

70 ISP-074-575-P1D 70
4. The 2020ComboPRO display will show “Zero air calibrated. Continue
calibration?” If span is required, press the “Next” key.
5. Enter the span gas concentration if the concentration displayed on the
2020ComboPRO is different than the concentration of the span gas cylinder.
Press the “New” key and follow the display prompts. For further
information, see page 47 for numeric value, duration, time, and date entry.
If the span concentration matches the span gas cylinder concentration, press
the “Next” key.
6. Connect the 2020ComboPRO to the sample bag containing the span gas.
The 2020ComboPRO will take 60-90 seconds to set the span set point.
When finished with the calibration, the 2020ComboPRO will display
“Calibration complete”.
NOTE: While the Cal status is active, all alarms are deactivated.