| Accurate measurement is the cardinal basis for fair and impartial bill settlement. As gas flow is significantly affected by temperature and pressure, proper compensation with these two factors are necessary for a correct calculation of flow. Gases of different qualities and different flow sensors demand, and flow sensors with static TPC functions also bring about, different temperature-pressure compensation (TPC) techniques. The reliability of gas flow data from the measurement system depends on the proper engineering application of TPC techniques.This essay is a further study on the engineering application of TPC for general gas and steam(GG&S) flow in the public project renovation. Combining the study with practical usage in the renovation and enlargement of flow system, it aims to achieve absolutely reliable figures from the flow measurement system, and thus realize the ideal of a"meter-aided and figure-supported"measurement management and business settlement.In this essay, you would find:1. An techniques feature analysis in-depth of the GG&S flow TPC techniques(GG&S FTPCT) and three different GG&S FTPCT from the three typical flow sensors in the bases of a study of the features of GG&S,2. A suggested general gas and steam flow TPC mathematical model (GG&S FTPC-MM) with the analysis of its rationality contrasted with some mathematical models in some intelligent flow integrating instruments widely used currently , and a summarization of engineering application modes for general gas and steam flow TPC (GG&S FTPC-EAM),3. A proved validity of GG&S FTPC-MM and GG&S FTPC-EAM with Effects in summary about GG&S FTPC with figures comparisons before and after the renovation with the help of typical case studies, and the analysis about other error sources in flow measurement.
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