DC to frequency conversion circuit

Device for measuring a pre-determined volume of liquid flowing t

Device for measuring liquid volume of the cylindrical piston met

Device for measuring the volume of a gas

Device metering and measuring quantities of liquid

Diaphragm gas meter

Diaphragm gas meter

Diaphragm type gas meter

Digital output, positive displacement flow meter

Direct gearless drive mechanism for an internal gate rotary vane

Disc metering assembly for resisting rotational forces

Double helical flowmeter

Dual magnetic drive for gear meters

Dual revolving vane pump-motor-meter

Dual rotor flow meter

Dual windup drum extensional rheometer