Residential gas metering key to utility operations. D. Martin. Pipeline Gas J., April 1994, 221(4), 14--62 (12 pages).

The importance of diaphragm meters for monitoring residential gas consumption is discussed. These have proved reliable at temperatures varying from -20 to +120 degrees F, they give an accuracy of 0.5%, and capital costs are about $50 per unit. The main improvements have been in the construction materials used. An historical review of diaphragm meters summarizes development features over the period 1836 to 1989. Future design requirements for diaphragm meters are discussed. They should be lightweight, neat, compact, of contemporary design, and easy to replace. Valves should be easy to clean and gases should be filtered to reduce contamination. Other desirable future requirements are listed. Research on new technological developments is reviewed.