FIELD: engines and pumps.
SUBSTANCE: device is intended to pump various liquids. In pneumatic pump 10 to control the speed and position of valve 16, there used is magnet 14 installed in cap 16 of valve of pneumatic engine 18, and two hermetically sealed reed relays 20 installed in valve cover 22. Solenoid 24 is installed on valve cover 22 and can be operated to extend pin 26 to the valve cap 16 to stop the valve and to recover the pump from overspeed condition. Magnetoresistive sensor 34 is located in the centre of pneumatic engine 18.
EFFECT: accurate control of position of piston and providing input data required for accurate pump control and diagnostic, and the possibility of using it to make dosing measurements and using it as the element of multi-component system.
7 dwg, 6 cl
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