165155 ⎘
Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having flexible movable walls, e.g. diaphragms, bellows for gases characterised by drive mechanism for valves or membrane index mechanism
Sub-classes:GAS SAMPLING MECHANISM AND GAS ANALYSIS DEVICE HAVING THE SAME
#2Fluid control system
#3WIDE-RANGE DIAPHRAGM GAS METER
#4Gas meter system and heating value derivation method
#5Method and an apparatus for operating an electromagnetic valve associated to a gas meter