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Online sodium meter calibration method

A calibration method and technology of sodium meter, applied in the field of measurement, to achieve the effect of simple operation, removal of H+ ions, and easy implementation

Pending Publication Date: 2021-06-25
大唐秦岭发电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the present invention provides an online sodium meter calibration method, which solves the problem of low measured value after the sodium meter is calibrated and improves the measurement accuracy

Method used

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  • Online sodium meter calibration method

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Effect test

Embodiment 1

[0040] Following is the result after checking the main steam sodium meter of No. 7 unit of Qinling Power Generation Company with conventional calibration method and calibration method of the present invention:

[0041]

[0042] It can be seen that the measured value of the conventional calibration method is obviously smaller, and the measured value of the calibration method of the present invention is within the normal range. The expected effect is achieved by improving the calibration method of the sodium meter. It effectively solves the phenomenon that the measured value of the sodium meter is low after calibration, and provides a strong guarantee for normal chemical supervision.

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Abstract

According to an online sodium meter calibration method disclosed by the invention, after a sodium measuring electrode is activated, the sodium measuring electrode is put into a flow cell to be washed, H+ ions in a hydrated gel layer are removed through water sample washing, and the H+ ions in the hydrated gel layer are completely removed through replacement of cations in a water sample and the H+ ions in the hydrated gel layer; and Na+ ions in the standard solution can easily enter the hydrated gel layer of the measuring electrode, so that the calibration precision is improved.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to an online sodium meter calibration method. Background technique [0002] Before the online sodium meter is calibrated, the sodium measuring electrode needs to be activated with hydrofluoric acid (HF) solution. The existing calibration methods of various online sodium meter manuals require that after the sodium measuring electrode is activated, the sodium measuring electrode should be rinsed for a few minutes to remove it. The impurities attached to the sodium measurement electrode are calibrated after washing, but in the actual use process, it is found that the measured value of the calibrated online sodium meter is low. [0003] For example, in Datang Qinling Power Generation Co., Ltd., there are 12 online sodium meters in Units 7 and 8. After regular calibration according to the instructions in the instrument manual, the measured value is generally low, at least 0.1 μg / L. ...

Claims

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Application Information

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IPC IPC(8): G01N27/416
CPCG01N27/4163Y02E30/30
Inventor 周潮华若岚谭娟白阳晨刘宏侠李强翟宏升闫敏
Owner 大唐秦岭发电有限公司
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