Helical Gear Flowmeter

Helical gear flow meters are typical volumetric flow measuring instruments which directly measure the quantity of flowing liquid by means of a couple of rotors known as helical rotors. It is a kind of positive displacement flow meters according to Roots principle, The double case combines the rugged durability and long service life of the BiRotor flow meter.

Helical gear flow meter is a kind of bi rotor flow meter positive displacement, it can be mechanical type flow meter, or equipped with electronic BiRotor transmitters and digital display and frequency to current converters are available for remote totalization, recording and presetting of metered volumes.
They may be used for custody transfer purposes, operating controls and for the many other needs of the petroleum, chemical and the pharmaceutical industry. https://www.silverinstruments.com/product/helical-gear-flow-meters.html