Ultrasonic domestic gas meters

This document establishes comprehensive technical requirements for ultrasonic domestic gas meters designed for use in residential settings. It specifies the general characteristics, performance criteria, and testing methods necessary to ensure accurate measurement of natural gas and other gaseous fuels within households. The standard outlines essential safety provisions, including resistance to environmental factors and operational reliability under varying pressure conditions. It addresses the meter's metrological properties, defining limits for error and uncertainty to maintain consistency in consumer billing. The document also details constructional requirements, covering aspects such as materials, assembly, and protection against unauthorized access. Furthermore, it provides guidelines for the marking and labeling of meters to facilitate identification and traceability throughout their service life. Compliance with these specifications ensures that devices meet established benchmarks for efficiency and durability in the domestic energy sector. The text serves as a reference for manufacturers, testing laboratories, and regulatory bodies involved in the production and validation of these measurement instruments.