DEVICE TO DIAGNOSE CONDITION OF FLANGE PROTECTIVE CARTRIDGE OF THERMOELEMENT Russian patent published in 2012 - IPC G01K7/16 

FIELD: measurement equipment.

SUBSTANCE: invention relates to measurement equipment and may be used, in particular, in thermometry, especially in transient processes, and where it is possible to quickly react to possible unsealing of protective cartridges of thermoelements by means of pressure measurement. The device for diagnostics of condition of a flange protective cartridge of a thermoelement, comprising a reference pressure unit, joined through a control channel with a thermoelement, made of a metering probe in a protective case with a seating flange, providing for tight connection of the metering probe in the protective case with a process plant, besides, the control channel is arranged in the form of an intermediate tight cavity formed between the working medium and the surrounding space, at the same time the seating flange is arranged as composite - from power and contact flanges, and the intermediate tight cavity is formed by serially communicating narrow through hole in a power flange, a part of the inner cylindrial surface of a sealing gasket between flanges, a horizontal narrow slot selected in the power flange and limited with the plane of the contact flange, a circular face on the central hole of the power flange, a gap between the cylindrical surface of the same hole and a flat on the seating surface of the protective case in the upper part of the contact flange, and also the narrow circular gap between the metering probe, its sealing ring and protective case.

EFFECT: simplified design and reduction of its dimensions with reduction of time for detection of protective cartridge faults.

3 cl, 2 dwg