Light target calibration apparatus

Abstract

The invention discloses a light target calibration apparatus, which comprises a calibrator, wherein the calibrator is a knob type calibrator, and comprises a calibrator main body, a knob and a calibrator cover, the side wall on the top portion of the calibrator main body is provided with four installation holes, compression springs and steel balls are fixed in the installation holes, the inner wall of the know is provided with a steel ball hole, the top portion of the calibrator main body is sleeved in the knob to make the calibrator main body rotate to a corresponding position so as to be fastened, the calibrator main body is provided with an ellipse notch, an upper ellipse hole, a lower ellipse hole and a light guide hole, the upper ellipse hole and the lower ellipse hole respectively have the shape with a rectangular middle portion and two semicircular ends, are full-range calibration holes, and are not through holes, a light guide rod is arranged in the light guide hole, a threadedhole is arranged between the upper end surface of the calibrator main body and the upper ellipse hole in a penetrating manner, and an adjusting screw is arranged in the threaded hole. According to the present invention, the four gear positions are arranged, such that the light target calibration apparatus can be easily arranged at each gear position so as to understand the drift condition of thelight target calibration apparatus.

Description

technical field [0001] The invention relates to an environment monitoring instrument, in particular to a light target calibration device. Background technique [0002] The dust monitoring instrument is used to detect the concentration of particulate matter. When the dust monitoring instrument runs for a period of time, it will drift, and the dust monitoring instrument needs to be calibrated. The cost of the calibration device of the existing dust monitoring instrument is high, the positioning deviation is large, and the repeatability is not good. Well, the external environment has a great influence on the calibration device, which greatly reduces the reliability of the calibration device. Contents of the invention [0003] The purpose of the present invention is to solve the deficiencies of the prior art and provide a light target calibration device. [0004] A kind of technical scheme of the present invention: [0005] A light target calibration device used for the cali...

AI Technical Summary

Problems solved by technology

[0002] The dust monitoring instrument is used to detect the concentration of particulate matter. When the dust monitoring instrument runs for a period of time, it will drift, and the dust monitoring instrument needs to be calibrated. The cost of the calibration device of the existing dust monitoring instrument is high, the positioning deviation is large, and the repeatability is not good. Well, the external environment has a great influence on the calibration device, which greatly reduces the reliability of the calibration device

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