METHOD FOR CONTROLLING DEGREE OF EXHAUSTION OF PROTECTIVE PROPERTIES OF FILTERING AND ABSORBING PRODUCTS IN FORM OF PLATES Russian patent published in 2021 - IPC G01N25/48 G01N25/72 

FIELD: physics.

SUBSTANCE: invention relates to the field of non-destructive methods for monitoring the quality state of filtering and absorbing products. The present method for controlling the degree of exhaustion of the protective properties of filtering and absorbing products in the form of plates is implemented as follows. A sample of the inspected product in form of a plate and a flat heater are placed in the volume where it is required to absorb the component of the gas-air mixture. As the component is absorbed, the product heats up. The non-contact method is used to measure the difference between the mean integral temperatures of the surfaces of the product and the heater. The supply voltage of the heater is continuously regulated in such a way that the absolute value of the measured temperature difference does not exceed the preset value. The degree of exhaustion of the protective properties of filtering and absorbing products is determined by the method formula.

EFFECT: improving accuracy of control of the degree of exhaustion of the protective properties of filtering and absorbing products in the form of plates by eliminating the need to determine the heat transfer coefficient on the surface of the tested product.

1 cl, 2 dwg