发明授权
US5241367A Device for measuring the composition of fluids, in particular the components of exhaust gases from internal combustion engines 失效
用于测量流体组成的装置,特别是来自内燃机的排气组分

Device for measuring the composition of fluids, in particular the
components of exhaust gases from internal combustion engines
摘要:
A device is proposed for measuring the composition of fluids, in particular of constituents of exhaust gases from internal combustion engines, in which a light ray (32, 31) is used to irradiate the exhaust gas to be measured over the length of a measuring section (29) and is weakened or changed more or less, depending on the content of constituents. The light signal being received is advantageously registered by a measured length light receiver (18) which is shielded light-tight against the light emitting light source (14) and is evaluated in relation to the original light emission, in an evaluation circuit (26). In this simple way, accurate information is obtained of the exhaust gas clouding and of the loading of a fluid or gas with constituents which are optically active.
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