The trace moisture analyzerunder UHV power can help many power workers conduct various power tests more conveniently.

The Karl Fischer volumetric method of theKarl Fischer moisture analyzer, also known as titration method, requires the following 5 steps for each sample measurement:

1. First, inject a portion of the reagent into the titration cell.

2. Titrate a portion of Karl Fischer reagent to achieve equilibrium.

3. Inject the tested sample.

4. Titrate Karl Fischer reagent into the titration cell again.

5. Discharge fee liquid.

The reagent should be replaced every time it is tested. This method converts the water content based on the amount of Karl Fischer reagent injected and the titration degree of the reagent, as Karl Fischer reagent is affected by factors such as environmental humidity, light, and sealing. Titration degree is constantly changing, leading to titration errors. During the measurement experiment, every time a measurement is made, the waste liquid from the previous measurement must be discharged and a new Karl Fischer reagent must be titrated, causing pollution to the environment. The consumption of reagents is high, the operation is cumbersome, and the measurement accuracy is low.

The Karl Fischer titration method of theKarl Fischer moisture analyzeralso includes the Coulomb method for trace moisture determination. Under the condition of electrolytic cell equilibrium, only one operation step is needed, which is to inject the sample. The instrument will automatically perform electrolysis based on the amount of water contained in the sample. When it reaches equilibrium again, the water content will be converted based on the amount of electricity consumed by electrolysis, and the numerical result will be automatically displayed on the instrument. Therefore, the accuracy and precision are higher, the measurement speed is faster, and the reagents of the titration method can be continuously used for a long time without frequent replacement. The amount of reagents used is small, the measurement cost is low, and the operation is simple.

According to the previous text, it can be seen that the electric method of Karl Fischer moisture analyzer is more commonly used than the volumetric method, which is more convenient to use, more accurate in measurement, and more environmentally friendly.