Transmission-type smokemeter optical channel effective length measuring device

Abstract

A transmission-type smokemeter optical channel effective length measuring device provided by the present invention comprises a control machine body and a placement base, the control machine body is installed and fixed on the left side of the upper end of the placement base, and the outer side of the lower end of the control machine body is provided with a rolling storage disc. By arranging the winding storage disc structure, the light-sensitive data line can be conveniently rotated and wound for use, the sleeving base of the winding storage disc is fixedly connected to the control machine body in a welded mode, so that the light-sensitive data line is not prone to falling off during use, and during winding rotation, due to the fact that the winding rotating wheel is movably fixed to the sleeving base through the rotating vertical rod so as to effectively rotate and winding, and during rotation, due to the fact that a rotating handle is arranged at the outer end of the winding rotating wheel, holding and rotating are facilitated, rotation and winding are more convenient in the later period, a protection shielding cover structure is arranged, a very good light shielding and protection effect is achieved, interference of external light is effectively reduced, and the ranging error is avoided.

Description

technical field [0001] The invention relates to the technical field of transmission smoke meters, in particular to a device for measuring the effective length of an optical channel of a transmission smoke meter. Background technique [0002] The smoke meter is an instrument for measuring the smoke in the exhaust gas emitted by automobiles. It is mainly used for the determination of exhaust gas from diesel engines. Use a piston pump to extract a certain volume of exhaust gas from the exhaust pipe of the diesel engine according to the specified time, and make it pass through a certain area of ​​filter paper. The smoke particles in the exhaust gas will be trapped on the filter paper and make the filter paper black. The absorbance of the filter paper is measured with a photoelectric measuring device, which indicates the amount of smoke in the exhaust gas. However, when the transmission-type opacimeter measures the effective length of the optical channel, it is necessary to use...

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Problems solved by technology

[0003] At present, the existing optical channel effective length measurement device of the transmission opacimeter does not have a good winding storage device when winding the measurement data line, which makes it not very convenient to wind and store, and the distance measurement is easily affected by external light. problem of influence

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