UNIVERSAL INDICATOR OF WORKING PRESSURE OF ELECTRIC-CONTACT MANOMETER Russian patent published in 2013 - IPC G01L19/08 

FIELD: physics.

SUBSTANCE: device which indicates working pressure of an electric-contact manometer consists of a rim with a mounting groove; crosswise around the rim there are wedge-like incisions, a radial guide in form of an annular closed section, indicator pointers and a worm drive clamp; the rim is meant for mounting the pointer on the manometer using the worm drive clamp which is mounted in the mounting groove; the radial guide lies on the front edge of the rim and serves for radial displacement of the indicator pointer on its annular closed section; behind the radial guide on the outer side there is a radial groove, and on the inner end surface there are crosswise notches; the indicator pointer on the rear side has a cross-sectional sampling, in the lower part of which there are fixing teeth, and in its top part there is a spring-loaded element in form of a beam; in working state, the indicator pointer moves on the section of the radial guide which is in its cross-sectional sampling, while the spring-loaded element wound up into the radial groove, and the fixing teeth are in a state of engagement or during movement skip the crosswise notches; the indicator pointer is mounted on the radial guide through the narrowing of its section in the lower part of the working pressure indicator; for universal use of the device on manometers of different types, on the inner surface of the rim, on edges of segments formed by the wedge-like incisions, there are cut lugs.

EFFECT: safe use of electric-contact manometers, adding structural modifications to the existing working pressure indicator, making it more manufacturable for mass production using the disclosed technology; the universal working pressure indicator for an electric-contact manometer also enables operation of electric-contact manometers to meet requirements for presence of a red line on measuring scales of all manometers which indicates working pressure of pressurised vessels.

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