SOLID ELECTROLYTE TRANSDUCER OF HYDROGEN CONCENTRATION IN GASES Russian patent published in 2014 - IPC G01N27/407 

FIELD: instrumentation.

SUBSTANCE: proposed transducer comprises selective membrane (12), ceramic sensor (7) with reference electrode (15), measuring electrode (6), sealed chamber composed of interconnected working chamber and auxiliary chamber, case (8), connection material (13), plug with hole (11), sealed outlet (3), potential measuring device (10) and sleeve (1). Ceramic sensor (7) is composed of interconnected cylindrical element and sphere part arranged at lower section of said cylindrical element. Upper part of ceramic sensor outer cylindrical surface is tightly connected with inner side surface of case (7) by connection material (13). Reference electrode (15) is arranged between inner surface of ceramic sensor (7) and the surface of plug (11). Thin ply of conducting coating of noble metal is applied on outer spherical surface of sensor (7) to make the measuring electrode (6). Potential measuring device (10) is brought through hole in plug (11) into reference electrode (15). Sleeve (1) is connected with lower part of case (8). Lower part of sleeve (1) has bottom with central bore with selective membrane (12) secured thereto. Lower free end of selective membrane (12) is tightly closed by plug (5). Ceramic sensor (7) and selective membrane (12) are equipped with common heater with temperature controller. Auxiliary and working chambers are integrated in one volume confined by outer surface of ceramic element (7), connection material (13) and inner surface of case lower part (8), sleeve (1), selective membrane (12) and plug (5). Auxiliary chamber is brought out of the main heater zone to make therein an area saturated with steam. Note here that said auxiliary chamber incorporates thermoelectric transducer (14) and extra heater (4).

EFFECT: reduced inertia, higher accuracy, sensitivity and stability of transducer readings.

9 cl, 1 dwg