Double-platinum electrode type permanganate index online analyzer titration end point indicating device

A technology of permanganate index and titration end point, applied in the direction of material electrochemical variables, etc., can solve potential drift, affect the overall performance of the analyzer, ORP electrode is easy to age, etc., to achieve accurate end point indication and long service life , low maintenance effect

Inactive Publication Date: 2019-03-26
NARI TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During use, the ORP electrode is easy to age, resulting in potential drift, and needs to be replaced regularly, which affects the overall performance of the analyzer

Method used

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  • Double-platinum electrode type permanganate index online analyzer titration end point indicating device
  • Double-platinum electrode type permanganate index online analyzer titration end point indicating device
  • Double-platinum electrode type permanganate index online analyzer titration end point indicating device

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0017] Such as figure 1 As shown, a dual-platinum electrode type permanganate index on-line analyzer endpoint indicator device consists of a double-platinum electrode 1, an excitation current commutation module 2, a constant current source module 3, a signal acquisition module 4, and a microprocessor module 5 composition. During the titration process of the permanganate index online analyzer, the double platinum electrode 1 is placed in the reaction solution 6, and the constant current source module 3 generates a microamp level excitation current, which is applied to the two sides of the double platinum electrode through the excitation current commutation module 4. Platinum sheets 1-1, 1-2. e...

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Abstract

The invention discloses a double-platinum electrode type permanganate index online analyzer titration end point indicating device. The device comprises a double-platinum electrode, an excitation current reversing module, a constant current source module, a signal acquisition module and a microprocessor module, wherein the double-platinum electrode is placed in a reaction solution; the constant current source module is connected with two platinum sheets of the double-platinum electrode through the excitation current reversing module; the excitation current reversing module is connected with thesignal acquisition module; the signal acquisition module is connected with the microprocessor module. According to the device, the titration end point is judged by using the double-platinum electrode, the electrode structure is simple, the maintenance rate is low, the service life is long, the adopted titration end point indication mode is unique, the end point indication is accurate and is not influenced by the electrode voltage drift.

Description

technical field [0001] The invention relates to a titration end point indicating device for a permanganate index on-line analyzer, in particular to a titration end point indicating device for a permanganate index on-line analyzer with double platinum electrodes. Background technique [0002] Potassium permanganate oxidation-titration method is the widely used analysis principle of permanganate index water quality online analyzer. During the titration process, the oxidation-reduction potential electrode (ORP electrode) is usually used to monitor the oxidation-reduction potential of the reaction solution. Near the end of the titration, the oxidation-reduction potential of the reaction system will gradually increase and stabilize at a certain value. The threshold judgment of the potential can realize the judgment of the titration end point. The ORP electrode uses platinum as the working electrode, silver chloride as the reference electrode, and microporous material as the liqu...

Claims

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Application Information

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IPC IPC(8): G01N27/42
CPCG01N27/42
Inventor 孙颖奇卢欣春罗勇钢刘冠军倪亮雷丽江杨明鑫
Owner NARI TECH CO LTD
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