LF100B series tuning fork level limit switch is a universal level limit switch. The tuning fork is excited by the piezoelectric crystal to generate vibration. When the tuning fork is immersed in liquid or solid, the vibration frequency changes. This frequency change is detected by the electronic circuit and is not affected by the electrical parameters of the medium, turbulence, agitation, bubbles, vibration and other factors. There are no moving parts. Therefore, there is no need to adjust the maintenance amount. It is an ideal choice for level switches under complex working conditions.