ABSTRACT
This chapter describes measuring systems, which are able to determine heat quantities accurately with the help of certain processing routines, and possibilities of measurement recording and processing. It discusses determination of characteristic gas quality data and measurement of gas volume taking gas quality into account (density-correction). The chapter compares measurement results with respect to forecasted actual gas quality. The measured gas quality data can be used to determine the compressibility behaviour of the gases and their heat volume. The chapter also describes the determination of heat quantities by linking volume and calorific value on various time bases.
