Based on the tuning fork vibration principle, this level switch adopts piezoelectric crystal to vibrate the fork by fixed frequency of tuning fork, also the frequency variation can be monitored continuously. When used for low level alarm, the liquid in container flows down and through the tuning fork to cause the variation of natural frequency, this frequency variation can be captured by electric component so that the output mode can be switched into another one. When used for high-level alarm, the liquid inside container goes up and vibrate the tuning fork so the output mode can be changed again.
Short fork technology:
Select the natural frequency (about 1300Hz) of tuning fork so that the interference which can cause faulty action of switch can be avoided effectively. The shorter fork can extend into container, thus, this product can adapt to all liquid variety, abundant researches have established stable base for high working efficiency so that this product can adapt to any kind of liquid including painting liquid, inflatable liquid and serous fluid.
With LED display, it is available to carry out observation through the window of shell. When under "CLOSE" mode, the LCD display will flicker continuously (one time per 0.5s), while under "OPEN"mode, the LCD display will be on all the time.
Magnetic test points
Distributed at the side of shell, the operator can carry out function test through these test points. When one magnetic block touches the test point, the output will be changed.
For a quick connection, adopt standard DIN 43650 plug/socket, in addition, insensitive polarity and short-circuit protection can make the electric connection easily and safely.