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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
  • Description
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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 detector for water hardness.The online detector comprises a to-be detected water sample feeding system, a reagent feeding system, an effluent removing system, a PLC and a color measurement system.The PLC pumps a to-be-detected water sample, a buffer solution, a coordination agent and an indicator into a cuvette for a reaction by controlling three-way valves and diaphragm pumps in all the systems, a light source and a color sensor work together to collect the color of the water sample in the cuvette and transmit a color value to a measurement and control system in a frequency mode simultaneously, the measurement and control system converts the frequency into an RGB value and then converts the RGB value into an HSB value, and the frequency is output in an RS485 signal mode at last.The detector not only can online monitor the water hardness, but also has the advantages of being high in precision, high in sensitivity and large in measurement range, and the precision of detection on the water hardness can reach 0.005 mol / 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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