METHOD FOR PRODUCTION OF CHECKING GAS MIXTURES FOR CALIBRATING AND CHECKING GAS ANALYZERS AND DEVICE FOR ITS REALIZATION Russian patent published in 2006 - IPC G01N30/06 B01F3/02 

FIELD: method for producing gas mixtures for testing gas analyzers.

SUBSTANCE: method for producing checking gas mixtures includes desorption of dosed component from adsorbent into carrier gas flow, let at excessive pressure through a vessel filled with adsorbent, wherein preliminarily adsorbed under excessive pressure is a given amount of dosed component. Further, carrier gas flow is let through turbulent throttle mounted serially with vessel, forming at outlet of device the starting flow of checking gas mixture with maximal concentration of component for current filling of adsorbent and gas-carrier pressure set in the vessel. Concentration of component in the flow of checking gas mixture at device outlet is controlled by changing pressure of carrier gas in the vessel and diluting starting flow of checking gas mixture by flow of carrier gas from the source of compressed gas, let through alternating turbulent throttle connected in parallel to vessel and first throttle. Both throttles operate in above-critical mode of gas stream ejection.

EFFECT: possible production of checking gas mixtures with continuous row of values of concentration of dosed component in broad range.

2 cl, 1 dwg