Summarization : 
UHF-YK Tuning Fork level switch is a new level switch, Forks can vibrate by the crystal driving. when the terminals are immersed by liquid, the vibration frequency will be changed, this change can be examined through  the electronic circuit  and output a switch signal, it can achieve alarming and controlling for high & low level.
 
Compatiable strong : can not be influenced by different electric parameter of measured liquid, also no influence as the rapids, mixes, the air bubble, the medium viscoity, high pressure.

No adjustment: Because the tuning fork switch is not influenced by the electrical parameter of measure medium, it need not to adjustment regardless of what kind of liquid
 

A level switch, also common referred to as a float switch, is a device that senses the level of a liquid in a water tank It is a speciallized type of pressure switch, which is capabale of sensing the pressure with a tube, In washtube, forexamply, the tube run from the level switch within control console and continue down the outside of tube bottom.
 
UHF-Q float level liquid switch is composed of non-communicated float group and contact group, when level is up or down, float ( one) move with it to vibrate the magnet  ( two) up or down, Responding to the principle of rejection between same pole, magnet in the enclosure swings oppositely to drive switch close or open . 

Application: 
In Chemical, petroleum, shipping and other store equipment some fixed liquid level need be controlled, the controller can operate it. The controller make the contact switch work through magentic, control level which liquid level change frequently.