PRESSURE DIFFERENCE INDICATOR Russian patent published in 2019 - IPC F16K37/00 B01D35/143 A47L9/19 

FIELD: physics.

SUBSTANCE: pressure difference indicator, having housing in which there are isolated holes, in one of which spring-loaded reed relay is installed, and in the second one – movable system with permanent magnet, wherein the holes are arranged in parallel, the movable system consists of a fixed bushing with a spring-loaded piston and a guide, and the permanent magnet is fixed in the piston body perpendicular to its axis in the plane passing through the reed switch axis, and spring-loaded, characterized in that it additionally includes a second piston c built-in magnet and spring, rod with adjusting nut, wherein the piston is installed in the third insulated hole parallel to the reed contact and separates the inlet filter pipeline and atmosphere, the spring by its one end rests against the piston, and by the other end it rests against the body, with its one end the rod is rigidly fixed on the piston from the side of the spring, and the second one passes through the tight hole in the housing, at the same time on its free end the adjusting nut is wrapped.

EFFECT: present invention is aimed at expansion of functional capabilities of pressure difference indicator.

1 cl, 2 dwg