Beta ray "online surface density measuring instrument", also known as "online weighing instrument" or "online thickness gauge", can measure the surface density of thin film products online and can

Convert weight, thickness, etc. based on the characteristics of the film.

Introduction to the principle of beta ray online weighing instrument

1. Measurement principle: The mass of a polarizer per unit area is called the areal density of the polarizer. The surface density of the polarizer is the most important factor determining the consistency of the battery. from

When the beta rays produced by the decay of Kr85 penetrate the battery electrode, a portion of the rays are absorbed by the electrode. Causing the radiation intensity after penetrating the polarizer to be relative to the incident light

The radiation intensity has a certain attenuation. The attenuation ratio has a negative exponential relationship with the surface density of the penetrated polarizer. Detecting the penetration of radiation through a special gas ionization chamber

The radiation intensity before and after the film can be used to calculate the surface density of the polarizer. As shown in the following figure:

2. The unique advantages of measuring extreme surface density with beta rays are: due to the penetrability and natural and stable characteristics of beta rays, as well as the low cost of later use,

The most accurate, reliable, and economical measurement method currently recognized internationally is still beta ray weighing.

from⁸⁵The intensity of the beta rays produced by Kr decay can penetrate the polarizer precisely, with high sensitivity and no strong radiation overflow, making it very suitable for measurement

Extremely one-sided density.

3. Suitable coating type:

Single gap coating, multi gap coating, continuous coating, single-sided coating, double-sided coating

4. Suitable for polarizer types:

Positive electrode plate, negative electrode plate

5. Measurement method:

Online dynamic non-contact measurement

Main technical parameters of β - ray online weighing instrument