MEASURING CELL Russian patent published in 2019 - IPC G01N27/00 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement equipment and is intended for analytical control of physical and chemical properties of water, including high degree of purification, and aqueous solutions in systems of control of technological processes at power plants, in analytical laboratories and other industries. Measuring cell consists of three flow-through chambers in series connected by channels, in which temperature sensor and electrodes, alkaline reagent source, wherein the first flow chamber is equipped with an inlet nozzle, and the third flow chamber is equipped with a nozzle for draining the sample, further comprises an alkalification unit, in which the alkalizing reagent source is made in the form of a cylindrical container equipped with a sealed cylinder-conic cover, under which a gas-permeable membrane is installed, forming with the cover inner surface a saturation chamber with alkalizing reagent vapors, channel supplying the controlled medium to the saturation chamber is made tangentially in the lower part of the cylindrical wall of the cover, and the channel which discharges the controlled medium is made vertically in the upper conical part of the cover, wherein output channel of first flow chamber is connected to inlet of two-way flow switch, first output of which is connected to channel supplying controlled medium to chamber of saturation of alkalization unit, channel, which removes controlled medium from saturation chamber of alkalization unit, and second outlet of two-way flow switch are connected to input of second flow chamber.

EFFECT: design of a portable small-sized reliable device for measuring chemical-physical parameters of a sample with an extended range of measurements, which provides reduced inertia, high accuracy and stability of measurements.

4 cl, 2 dwg