You should all be familiar with touch screens. In fact, touch screens have a standard name, called man-machine interface, because computers can also be used as human-machine interface. Large systems such as DCS need to be configured by computers.

Touch screen can be intuitive and vivid demonstration, control process, production process, but also can display the alarm and alarm parts, convenient maintenance personnel to maintain, but also can modify the set value and so on. According to the structure is divided into resistive touch screen, surface acoustic touch screen, capacitive touch screen.

Capacitive touch screen has high resolution, sensitive response, good touch, waterproof, dustproof, sunscreen and other characteristics. And because it USES the human body as an electrode for a capacitor, it has certain characteristics of the capacitor, such as distance between electrodes, relative area, dielectric insulation, and so on.