| 摘要 |
The disclosure relates to electro-chemical sensors for sensing gaseous nitrogen dioxide in the presence of carbon monoxide, oxygen, nitrogen, sulfur dioxide, nitric oxide and in chemically compatible mixtures of these gases as well as capable of sensing gaseous materials which are more strongly oxidizing than NO2, the sensor being formed from an Fe-1173 glass. The disclosure also relates to an electro-chemical sensor formed from 15% manganese As2S3 glass which is capable of sensing gaseous materials which are more oxidizing than NO2 in the presence of NO2, CO, O2, N2, SO2, NO and in chemically compatible mixtures of these gases. The disclosure also includes apparatus for determining when NO2 is being sensed rather than more strongly oxidizing gaseous materials by the simultaneous use of the Fe-1173 glass electro-chemical sensor and the sensor formed from 15% Mn-As2S3 glass.
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