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Optical concentration sensor protection cover and optical concentration testing device

An optical concentration and sensor technology, applied in the field of sensors, can solve the problems of inability to eliminate the bubbles of the solution to be tested in advance, low reliability, affecting the accuracy of the urea concentration test, etc., and achieve the effects of eliminating bubbles, prolonging service life and improving accuracy.

Active Publication Date: 2016-07-06
广东正扬传感科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the above-mentioned sensor for measuring liquid can measure the urea concentration, this solution cannot eliminate the factors that affect the test accuracy during the urea concentration test process. For example, this solution cannot eliminate the air bubbles in the solution to be tested in advance. Bubbles will affect the test accuracy of urea concentration, therefore, the reliability of the test results of urea concentration obtained by the above scheme is low

Method used

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  • Optical concentration sensor protection cover and optical concentration testing device
  • Optical concentration sensor protection cover and optical concentration testing device
  • Optical concentration sensor protection cover and optical concentration testing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Such as Figure 1 to Figure 3 As shown, a protective cover for an optical density sensor includes an outer cover 1 and a bubble barrier 2, and the bubble barrier 2 is embedded in the inner side of the outer cover 1; it also includes a fixed middle frame 3, a fixed upper bracket 4, Fix the lower bracket 5 and the fixing ring 6, the outer cover 1 and the air bubble shield 2 are installed on one end of the fixed middle frame 3, the fixed ring 6 is installed on the other end of the fixed middle frame 3, and the fixed The upper bracket 4 and the fixed lower bracket 5 are sleeved on the outside of the fixed middle frame 3 . The inner space of the bubble shield 2 and the fixed middle frame 3 forms a test area for the solution to be tested.

[0072] Wherein, the outer cover 1 is provided with a convection hole 11; the bubble shield 2 is provided with a liquid inlet 23; a barrier is arranged between the convection hole 11 and the liquid inlet 23, and the solution to be tested ...

Embodiment 2

[0082] Such as Figure 4 to Figure 6 As shown, a protective cover for an optical density sensor includes an outer cover 1 and a bubble barrier 2, and the bubble barrier 2 is embedded in the inner side of the outer cover 1; it also includes a fixed middle frame 3, a fixed upper bracket 4, Fix the lower bracket 5 and the fixing ring 6, the outer cover 1 and the air bubble shield 2 are installed on one end of the fixed middle frame 3, the fixed ring 6 is installed on the other end of the fixed middle frame 3, and the fixed The upper bracket 4 and the fixed lower bracket 5 are sleeved on the outside of the fixed middle frame 3 . The inner space of the bubble shield 2 and the fixed middle frame 3 forms a test area for the solution to be tested.

[0083] Wherein, the outer cover 1 is provided with a convection hole 11; the bubble shield 2 is provided with a liquid inlet 23; a barrier is arranged between the convection hole 11 and the liquid inlet 23, and the solution to be tested ...

Embodiment 3

[0093] Such as Figure 7 to Figure 9 As shown, a protective cover for an optical density sensor includes an outer cover 1 and a bubble barrier 2, and the bubble barrier 2 is embedded in the inner side of the outer cover 1; it also includes a fixed middle frame 3, a fixed upper bracket 4, Fix the lower bracket 5 and the fixing ring 6, the outer cover 1 and the air bubble shield 2 are installed on one end of the fixed middle frame 3, the fixed ring 6 is installed on the other end of the fixed middle frame 3, and the fixed The upper bracket 4 and the fixed lower bracket 5 are sleeved on the outside of the fixed middle frame 3 . The inner space of the bubble shield 2 and the fixed middle frame 3 forms a test area for the solution to be tested.

[0094] Wherein, the outer cover 1 is provided with a convection hole 11; the bubble shield 2 is provided with a liquid inlet 23; a barrier is arranged between the convection hole 11 and the liquid inlet 23, and the solution to be tested ...

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Abstract

The invention discloses an optical concentration sensor protection cover, which comprises an outer cover and a bubble shield, wherein the bubble shield is embedded into the inner side of the outer cover; convection holes are formed in the outer cover; a liquid inlet hole is formed in the bubble shield. The invention further discloses an optical concentration testing device comprising the protection cover. According to the scheme, the protection cover is arranged to protect a sensor main body, so that the condition that the sensor main body is collided or squeezed to be damaged is avoided to prolong the service life of the sensor main body on one hand, and on the other hand, a solution to be tested on the inner side of the protection cover tends to be still to improve the accuracy of a testing result. In addition, an air hole baffle plate is arranged on the outer side of the outer cover to prevent the solution to be tested from directly entering a testing area in a pouring process and simultaneously avoid influence of pollutants such as dust entering the testing area on the testing result, so that the reliability of the testing result is ensured.

Description

technical field [0001] The present invention relates to the technical field of sensors, in particular to a sensor protective cover and a testing device, further to a concentration sensor protective cover and a concentration testing device, and further to an optical density sensor protective cover and an optical concentration testing device. Background technique [0002] Urea or urea-based solutions are often used in automotive applications to reduce exhaust emissions. For example, some diesel powered motor vehicles include a urea tank separate from the fuel tank for carrying working fluids such as automotive urea solution. Automotive urea solutions are stored in urea tanks and sprayed into vehicle exhaust to convert nitrogen oxides into basic nitrogen and water, thereby reducing harmful emissions from vehicles. [0003] With the full implementation of China IV standards and higher emission standards, all heavy-duty commercial vehicles must be equipped with SCR systems or eq...

Claims

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Application Information

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IPC IPC(8): G01N21/01
CPCG01N21/01
Inventor 顾一新
Owner 广东正扬传感科技股份有限公司
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