This standard specifies the general requirements for online verification of flow meters using mobile gas flow standard devices, including safety protection, station conditions, working conditions, metering control, installation operations, and verification. This standard is suitable for online verification of flow meters in natural gas metering stations using mobile gas flow standard devices. This standard can be referred to when using a mobile gas flow standard device to perform offline verification of flow meters at natural gas metering stations.
SY/T 6999-2014 history
2014SY/T 6999-2014 General requirements for flow meters on-line verification with a traveling gas flow standard facility