Test gas cuvette for a device for measuring the concentration of a paramagnetic gas

摘要

Test gas cuvette for a device for measuring the concentration of a paramagnetic gas via the change is produced by a change in the magnetic field of the thermal conductivity of the paramagnetic gas, consisting of a plurality of layered, plate elements which are connected with the following features:a) a bottom plate (1) carries a measuring element (1.4) for the detection of the thermal conductivity of the measurement gas, electrical supply leads, an electrical test gas cuvettes heater (1.2) and a temperature-dependent electrical sensor element (1.3) for the detection of the measured gas temperature of cuvettes,b) a channel plate (2) is for the gas in the region of the measuring element (1.4) for the detection of the thermal conductivity and around the measuring element (1.4) for the detection of the thermal conductivity and is cut out, andc) the supply lines and the measured gas cuvettes heater (1.2) from the not cut out region of the channel plate (2) are covered andd) a cover plate (3), which the test gas cuvette seals in the upward direction, has at least two bores for the gas inlet - and the gas outlet in and out of the gas flow of the channel plate (2).