Online detector for water hardness

A water hardness and detector technology, which is applied in the direction of testing water hardness, testing water, material inspection products, etc. Effect

Inactive Publication Date: 2016-07-06
NANJING NORMAL UNIVERSITY
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  • Abstract
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Problems solved by technology

[0003] In order to solve the shortcomings of low measurement accuracy and small measurement range of the online water hardness detector in the prior art, the purpose of the present invention is to provide an online water hardness detector

Method used

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  • Online detector for water hardness

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Embodiment Construction

[0017] The technical solution of the present invention is described in further detail below through specific examples, but it is necessary to point out that the examples are only used to describe the content of the invention, and do not constitute a limitation to the protection scope of the present invention.

[0018] A kind of water quality hardness on-line detector of the present invention, structural schematic diagram is as follows figure 1 As shown, 1 is a solenoid valve, 2 is a solenoid valve, 3 is a low-hardness water buffer tank, 4 is a high-hardness water buffer tank, 5 is a three-way valve V1, 6 is a three-way valve V2, and 7 is a three-way valve V3 , 8 is the three-way valve V4, 9 is the three-way valve V5, 10 is the buffer tank, 11 is the low-concentration complexing agent tank, 12 is the high-concentration complexing agent tank, 13 is the indicator tank, 14 is the PLC, 15 Diaphragm pump, 16 cuvette, 17 light source, 18 color sensor, 19 measurement and control syste...

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Abstract

The invention discloses an online water hardness detector, which comprises a water sample feeding system to be tested, a reagent feeding system, a waste liquid removal system, a PLC and a color measuring system. PLC controls the three-way valve and diaphragm pump in each of the above systems to pump the water sample to be tested, buffer solution, complexing agent, and indicator into the cuvette for reaction. At the same time, the light source and color sensor work together to collect The color of the water sample, and the color value is transmitted to the measurement and control system in frequency. The measurement and control system converts the frequency into RGB value, then converts it into HSB value, and finally outputs it as RS485 signal. The detector can not only monitor water hardness online, but also has the characteristics of high precision, high sensitivity and large measuring range, and the detection accuracy of water hardness can reach 0.005mol / L.

Description

technical field [0001] The invention relates to a water hardness detector, in particular to an online water hardness detector, which can monitor water hardness online. Background technique [0002] The hardness of water is closely related to our life. People have also developed various methods for measuring water hardness, usually complexometric titration, spectrophotometry, atomic absorption, ion chromatography, etc. In order to improve production efficiency, researchers have successively developed A variety of water hardness online monitors. The so-called "online" is reflected in the automation of the hardness monitor. Compared with the traditional manual experiment to measure water hardness, the production of the online hardness monitor truly realizes the unattended intelligent operation. There are many kinds of online hardness monitors on the market, which are generally divided into low-range hardness testers (measurement range 0.5-10mg / L, calculated as CaCO3, the same ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78G01N33/18
CPCG01N21/78G01N33/1853
Inventor 林军汪祖洁李明海孙露静程苏琴
Owner NANJING NORMAL UNIVERSITY
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