A kind of absorbance detection device with reagent mixing constant temperature dehumidification function

Abstract

The present invention discloses an absorbance detection apparatus having a reagent mixing thermostat dehumidification function, the absorbance detection apparatus includes a plastic front housing and a plastic rear seat, a LED light source is fixed on the front housing by a mounting hole in a square groove in the middle part of the front housing, a drying agent is placed in a space formed by the outer wall of the square groove and the inner wall of the front housing, a front housing covering plate is fixed on the front housing by screws, and the drying agent is encapsulated in the front housing. A heater is fixed on the front part of the rear seat by screws, a photoelectric sensor is fixed at the rear portion of the rear seat by screws, and the photoelectric sensor is covered with a rear seat covering plate by screws, so that the interior of the absorbance detection apparatus is sealed. A colorimetric ware is disposed between the front housing and the rear seat. Outputs of the lower and upper parts of the colorimetric ware are connected to an inlet and an outlet of a mixing pump by a hose.

Description

technical field [0001] The invention relates to an absorbance detection device applied to an analytical instrument, more specifically, the invention relates to an absorbance detection device with the function of reagent mixing, constant temperature and dehumidification. Background technique [0002] The absorbance detection device is an important part of the instrument for measuring the concentration of substances by the optical method. The existing absorbance detection device simply installs a light source and a light receiver on both sides of the cuvette to measure the absorbance of the solution to be tested. This detection device mainly has the following problems. [0003] 1) Since the light source and detector are arranged on both sides of the cuvette, they will be affected by the temperature of the reaction solution in the cuvette during the detection process, and are also easily affected by changes in the ambient temperature. The temperature change of the light source...

AI Technical Summary

Problems solved by technology

[0003] 1) Since the light source and detector are arranged on both sides of the cuvette, during the detection process, it will be affected by the temperature of the reaction solution in the cuvette, and it is also easily affected by the change of the ambient temperature

The temperature change of the light source will cause the detection wavelength to drift, and the temperature change of the detector will cause the technical parameters of the electronic components to fluctuate. These changes will affect the accuracy of detection.

[0004] 2) When the temperature of the solution to be tested is lower than the ambient temperature and the humidity around the cuvette is high, the injected solution to be tested will cause fog to appear around the cuvette, and in severe cases, condensation will appear on the outer wall of the cuvette. It will interfere with the detection of absorbance, and it is easy to corrode the electronic components

[0005] 3) The existing absorbance detection device needs to manually mix the reagent and the sample to be tested. After the reaction is completed, the solution can be injected into the cuvette. The color development and detection of the sample are no longer carried out in the same device, which not only increases the work of the tester amount, and the solution may be contaminated during the transfer process, resulting in reduced detection accuracy and stability

[0006] 4) Some temperature-sensitive color reactions, after being injected into the cuvette, the color development process of the solution will be affected by the ambient temperature, which will reduce the accuracy of detection

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