The ultrasonic sensor-based meter was tested and evaluated for compliance to U.S. industry accuracy requirements, general service functionality requirements, and extreme operating conditions. Since there is currently no U.S. domestic gas meter standard to address the unique requirements of an electronically-based compact gas meter, tests were drawn from the ANSI B109.1 standard for diaphragm meters where applicable, and from other relevant standard sources. The Siemens meter passed most of the tests to which it was exposed. It was found to be insensitive to changes in operating pressure or gas composition. Test meters were taken directly from a production line to British Gas specifications and were not prepared in any way for the U.S. market.
Appendix includes signature scans of radiated emissions.
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