translator for the determination of the content of nitrogen in coal and controlled atmospheres

摘要

the invention relates to a transducer for the determination of the content of carbon or nitrogen in controlled atmospheres.the transducer.according to the invention is composed of a film deposited on a support iron ceramic in a nested configuration of two resistant one of which is in contact with the atmosphere to be masurata, the other being protected from the atmosphere by a resistance film of sio, unprotected varying depending on the atmosphere and concentration of carbon or nitrogen which airs in the layer.