According to the properties of various samples needed to measure water, a variety of methods for the determination of water content are proposed.
A number of water measurement instruments have been developed to meet our needs for quantitative analysis of water. Below, we will make a simple comparative analysis of several commonly used water measurement methods (drying method).
The following is the analysis of moisture meter expert xiao Yang
Water is the only volatile substance;
2. The chemical changes of other components in the sample caused by heating can be ignored;
The disadvantage is that the accuracy is low, and it is not suitable for the measurement of liquid, gas, and volatile substance samples.
3. No combined water;
Halogen rapid water meter is a new type of water meter developed rapidly with the progress of science and technology in recent years.
This instrument is mainly used for the determination of free water in solid samples.
Through the quick heating of the high-power halogen lamp, the weight change of the sample is directly displayed on the weighing system, and the moisture value of the sample is automatically calculated on the display screen of the moisture meter.
By means of this method and principle, the halogen rapid moisture meter can also determine the volatile content or solid content of some samples.
The halogen rapid moisture meter is improved from the infrared rapid moisture meter. The main difference between the two is the heating method:
The heating source of halogen rapid moisture meter is ring halogen lamp, and the heating source of infrared rapid moisture meter is common spherical incandescent bulb.
Due to the different structure and principle of the heating lamp, the test results of the sample are also affected.