ANALYTIC DEVICE Russian patent published in 2006 - IPC H01C7/02 

FIELD: analytic devices such as sensors for detecting and measuring quantity of materials in fluid state.

SUBSTANCE: sensor responding to chemical or biological material, particle, or radiation has polymeric composition body of first level of electric conductivity in quiescent state and can be transferred to second state of other level of electric conductivity due to variations in mechanical stress applied to body by means of extension or compression, or by means of electric field; it also has electrodes connected to mentioned body for connection to electric circuit responding to variations in mentioned body conductivity. Sensor has channel component for organizing channel therein to pass fluid medium under test. Mentioned body is permeable for mentioned fluid medium and stretches crosswise of channel so that fluid medium flows through mentioned body. The latter is made in the form of layer of granules which is supported within channel between two electrode-forming perforated lattices. Body can be made in the form of sheet incorporating foam or textile with granules of mentioned polymeric composition dispersed therein.

EFFECT: ability of sensor to afford static and dynamic contact and of real-time system variation.

9 cl, 32 dwg