The intelligent digital measuring and controlling instrument is a kind of intelligent instrument, which adopts single-chip technology, which integrates display, measurement, calculation, control and remote transmission. It is widely used in industrial control, electrical measurement control and other fields.

 

The picture shows the appearance of the membrane switch panel of the intelligent digital measurement and control instrument.


 

There are four colors: light gray, dark gray, blue, and white. Light gray is used for decoration, dark gray is used as the main background, blue is used as the button area, and white is used as the color of text and instructions. So there are 4 colors in total.In the middle is a rectangular transparent window, and there is a small rectangular transparent window at the bottom right of the rectangular transparent window. Below the rectangular transparent window is a line of white text, which is the English of Smart Digital Display Control Instrument. Continuing down is a long transparent window, which is a transparent window used by manufacturers of intelligent digital measurement and control instrument to mark product specifications and models.

 

Further down, there are 5 LED indicator holes, but the indicator holes are elliptical, and they are annotated as PV, AL1, AL2, Al3, Al4. On the lower right side are three sky blue rounded rectangular raised keys with a touch. On the blue button, there is a white triangle arrow to indicate and distinguish the function of the button.

 

Analysis of screen printing process of membrane switch of intelligent digital measuring and controlling instrument

 

Silk screen printing is a printing method that pays attention to the order of colors. The membrane switch has 4 colors, namely light gray, dark gray, blue and white. In silk screen printing, dark gray should be introduced first, then light gray should be pressed on the side, then blue should be printed, and finally white should be printed against the hollow. The advantage of this sequence is that the color of the blue button is more stable and pure. However, due to the anti-hollow screen printing, the dark gray and light gray inks should not be too thin, otherwise the white text part will be difficult to achieve clear and beautiful.

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