JJF 2012-2022 in English

This standard provides a framework for the evaluation of ultrasonic gas meters, focusing on the methodology and criteria for assessing their performance and compliance. It outlines the procedures for testing and verifying the accuracy, reliability, and consistency of such devices. The document includes guidelines for the preparation of test samples, the execution of measurement procedures, and the analysis of results. It also specifies the requirements for calibration and the conditions under which the evaluations should be conducted. The standard aims to ensure that all ultrasonic gas meters meet the necessary technical specifications and operational standards. It serves as a reference for manufacturers, testing laboratories, and regulatory bodies involved in the assessment of these devices.