Delta meters are volumetric meters. The flow of gas moves the pistons
and each rotation traps and transfers a specific volume of gas.
The movement is mechanically transmitted to the totaliser through
the magnetic coupling.
Delta meters are designed to measure natural gas and various filtered, and non-
corrosive gases. They are used when very accurate measurement is required, when the
gas flow can be low or irregular.
Due to the volumetric principle of the Delta meter, its metrology is not influenced by
installation conditions. Consequently, it can be used to build very compact stations
without installing a straight pipe inlet before the meter.
Delta meters are approved for fiscal use.