VACUUM SENSOR Russian patent published in 2019 - IPC G01L21/34 

FIELD: space engineering.

SUBSTANCE: usage: to control the tightness of spacecraft. Essence of the invention lies in the fact that the vacuum sensor includes a housing, a coaxial cylindrical anode, disk cathodes connected by a central rod, and a magnetic system composed of two disk permanent magnets, which, together with a coaxial cylindrical anode and disk cathodes, are housed in a sensor housing with openings, the coaxial cylindrical anode is also made with openings; inside the coaxial cylindrical anode, disk permanent magnets are located on the disk cathodes, and each pair of disk cathodes and disk magnets are fastened together and fixed inside the cylindrical anode with dielectric holders, the upper and lower dielectric holders are made of fluoroplastic, the lower dielectric holder with terminals for high voltage is mounted on the base, which is attached to the body with screws, and the air cavities between the housing and the upper dielectric holder and the base and the lower dielectric holder are filled with a sealant, the housing is made of a nonmagnetic metal, additionally the upper and lower magnetic nozzles installed on the outer surface of the housing are inserted into it, the upper nozzle is made in the form of a cylindrical cap mounted on the upper part of the hosing, the lower nozzle is made in the form of a ring mounted on the lower part of the housing, the height of the upper and lower nozzles is set equal to (1/4–1/3) the height of the housing, in addition, the base of the vacuum sensor is also made of a soft magnetic metal.

EFFECT: technical result: providing the possibility of reducing noise, reducing the influence of extraneous magnetic fields on the vacuum sensor readings.

1 cl, 1 dwg