FIELD: measurement equipment.
SUBSTANCE: sensor is equipped with a filtering device, behind which a detector device is installed, to which an evaluation device is connected. The filtering device comprises at least the first filter, namely, an inspection filter, made in the form of a bandpass filter, letting through the first specified strip, namely an inspection band, and at least one second filter, namely, at least one reference filter, made in the form of a bandpass filter, letting through at least one second specified band, namely at least one reference band (RP1 and RP2). Besides, the specified detector device comprises at least one detector connected to at least one of filters. Pass bands of reference filters are distributed above and below the pass band of the inspection filter.
EFFECT: simplified usage of a sensor.
14 cl, 6 dwg
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