BS 6400 discusses gas meters with a maximum capacity not exceeding 6 m3/h. BS 6400-2 specifies requirements for the installation, exchange, relocation, maintenance and removal of credit or prepayment or smart meters of the following types: diaphragm, ultrasonic and thermal mass gas meters with a maximum capacity not exceeding 6 m3/h.
BS 6400-2 is applicable to primary meter installations:
Note 1: For BS 6400-2, installation includes design, inspection and commissioning. It is recognized that each of these tasks can be performed by the same person
Note 2: For smart meters, this standard only covers the associated gas work
Note 3: Some legacy MP networks can operate at a design minimum pressure (DMP) of 35 mbar, 65 mbar, 105 mbar, 180 mbar and 270 mbar
Note 4: It is recognized that the final connection(s) to the gas service would not be subject to a strength test
Note 5: Installation, exchange, relocation, maintenance and removal of a secondary meter with a maximum capacity of 6 m3/h is specified in BS 6400-1
BS 6400-2 on the specifications for gas meters is useful for:
A gas meter is a specialized flow meter, used to measure the volume of fuel gases such as natural gas and liquefied petroleum gas. BS 6400-2 guides you with aspects such as pressure control, regulator assembly, protection system, and low-pressure regulator. BS 6400-2 gives you guidelines for the location for meter installation, meter housing and proximity distance for meter and vent pipe tips.
BS 6400-2 provides pre-installation checks and safety precautions. BS 6400-2 guides you with the five-year inspection and maintenance plan for the gas meters.
BS 6400-2 helps you with the overall installation process and maintenance checks, which gives you reliable gas meter readings.
BS 6400-2:2018 supersedes BS 6400-2:2006, which is withdrawn. BS 6400-2:2018 includes some technical changes with respect to BS 6400-2:2006. These include: