The principle of video optical contact angle measuring instrument：

Through the principle of optical projection imaging, the fidelity acquisition and precise analysis of the interface contours of gas, liquid and solid are carried out.

Video Optical Contact Angle Measuring Instrument Architecture:

Video capture system:

We use high-fidelity telecentric 0.7-4.5 times continuous zoom lens, no deformity, no distortion, imported CDD industrial camera + sony chip, high compatibility and no data loss.

light source:

We use an LED cold light source system, which has uniform brightness and clear imaging, and can also avoid the volatilization of small droplets caused by extra heat.

Injection system:

Our injection unit is divided into automatic and manual dripping. We can control the precision of automatic dripping within ±00028 microliters and manual dripping at 0.1 microliters; some are injected directly through a syringe, and some are injected through pipelines. If there are no special requirements, we will It is not recommended to use pipeline injection (the reason is that it is not easy to clean and easy to damage); in addition, our injection system can be accurate to picoliters, mainly used to measure the contact angle of small products such as fibers and COF ultra-narrow edges, and the minimum can be less than Contact angle measurements were made on 0.4mm products.

Sample stage:

We also divide the sample stage into two types: manual and automatic, and the design and selection are more flexible.

Analysis software system:

Sindin's precision contact angle measuring instrument software is independently developed and designed by a team of top software experts. It is a multi-functional analysis software with clear partitions, intuitive and simple operation, and can be used quickly.

Video optical contact angle measuring instrument measurement method：

① Sessile drop method: for static contact angle measurement
②Adding liquid method: used to measure the dynamic advance angle
③Shrinkage method: used to measure the dynamic receding angle
④Tilt angle method: used to measure the rolling slip angle
⑥Pendant drop method: for measuring surface/interfacial tension
⑦Fiber wrapping method: used to measure the contact angle of small products such as fibers
⑧Bubble trapping method: for surface/interfacial tension measurement
⑨ Batch fitting method: used for real-time dynamic fitting
⑩ Insert method: used to measure the wettability of the sheet surface

Seeing this, I believe that everyone has a general understanding of the working principle and structure of Sindin precision video optical contact angle measuring instrument. When you purchase or use a contact angle measuring instrument, it will be easier to choose products according to your own measurement needs.