The utility model discloses a double -light -path water environment on - line measuring device, control and signal processing module control light control board, the work of light control board control light source, the light source sends the ultraviolet visible light, and the ultraviolet visible light becomes the parallel light behind lens no. 1, the parallel light is divided into two the tunnel, passes quartzy optical window all the way after lens no. 2 assemble into the light beam through optical fiber transmission to collection module for test the water sample that awaits measuring, light beam is assembled into through optical fiber transmission to collection module through reference light path through lens no. 2 as the reference signal that the light source energy changes in another way, the motor rotates and drives the separation blade swing, and the separation blade has two normal position, corresponds measurement optical path respectively and passes through the position with reference light path light to make measurement optical path and reference light path light signal gathered by collection module through optic fibre after the lens focus respectively, the utility model discloses a double -light -path structure can the effectual light source fluctuation of avoiding and the influence that brings of light source decay, has improved the stability of measuring tool and the accuracy of device.
; 蔡宗岐
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