Diagnosis
The gas law deviation factor can only be determined using pressure andtemperature if the temperature is calculated in the volume correctionfactor procedure.
In most cases this applies only to thermal gas billing 00.

Procedure
However, there are a few exceptions:

• You use thermal gas billing 01 and wish to provide the calculated
temperature values for calculation of the gas law deviation factor.
Select the separate temperature function

• You use thermal gas billing 02 and wish to provide the temperature and
pressure (measured pressure, air pressure) for calculation of the gaslaw deviation factor.
Select the separate temperature and the separate pressure functions.