By hvhipot 
The trace moisture analyzer under HV Hipot Electric Co., Ltd. power can help many power workers conduct various power tests more conveniently.
As is well known, the principle of a trace moisture analyzer is to use the Karl Fischer Coulomb titration method to determine the moisture content. The application of microcomputer automatic control technology, large screen with LCD display, full Chinese menu prompts for operation, rich operation and printing of experimental results, is an ideal instrument for detecting moisture content in industries such as petroleum and power, and scientific research institutions. Below, Huatian Electric will provide a detailed introduction to the working principle of the trace moisture analyzer.
The Karl Fischer method is a method for determining the moisture content of a sample using methanol as the medium and a cartridge solution as the titrant. This method is easy to operate, highly accurate, and particularly suitable for samples that are easily damaged during heating. It can not only detect free water but also bound water. It is often used as a standard method for moisture analysis, especially for trace amounts of water. Note that this does not apply to samples containing strong reducing agents such as VC.
When the concentration is above 0.05%, a reverse reaction will immediately occur. If we make the reaction in the same direction, we need to add some alkaline substances to neutralize the acidic substances produced in the reaction. Adding pyridine to the reaction system can make the reaction in the right direction. So it proves that pyridine is the most suitable reagent, which can bind with iodine and sulfur dioxide to reduce vapor pressure.
The above is about the working principle of the trace moisture analyzer. Understanding the above knowledge is believed to be helpful for HV Hipot Electric Co., Ltd. future use.