UQK-66 series float ball liquid level controllerDetailed product description：

The UQK-66 series float level controller is suitable for level control in open or pressurized containers during industrial production processes. Controllers are divided into two categories: explosion-proof and non explosion-proof. It has the advantages of safe use, reliable performance, and easy maintenance.  
The UQK-66 series float level controller is not suitable for media with high viscosity, easy crystallization, and corrosive effects on stainless steel.  

structural principle
UQK－66A、66B　 
Float 1 rises with the increase of liquid level, and the iron core 2 connected to the float enters the action zone of magnetic steel 3, attracting the magnetic steel to drive the mercury switch 4 (or micro switch) to move, causing the contact to close or open. The liquid level drops, the iron core moves downwards, exits the magnetic steel action zone, the magnetic steel is pulled back by the tension spring 5, and the switch is reset. The switch and magnetic steel components are completely isolated from the liquid by sealed tube 6.
UQK－66C　
Float 3 is suspended on tension spring 2 through sling 1 (the float is actually a sinking cylinder). When the liquid level rises H, it changes the buoyancy force on the float, causing the tension spring to change its force and move upward G, resulting in the iron core 4 connected to it acting with magnetic steel 5, and the linkage switch 6 acting. Due to the fact that the displacement distance G of the tension spring is much smaller than the liquid level change distance H, a larger liquid level differential change can be achieved.  

Main technical indicators

model	Measurement range mm	Working pressure MPa	Medium temperature ℃	Switching difference mm	Switch type	Switch layout	Installation type
UQK－66A－1	Install with inspection points	six point four	two hundred and fifty	5~35	micro switch	Single layer single switch	External float type side bottom flange
UQK－66A－2						Single layer dual switch
UQK－66B－2			four hundred		Mercury switch	Single layer dual switch
UQK－66C－1	200~3000	two point five	two hundred	Stepless adjustment	micro switch	Single layer single switch	Internal floating top flange
UQK－66C－2				5~35
UQK－66C－3				Stepless adjustment		Double layer single switch

Note: Single switch refers to single pole double throw, while double switch refers to two single switches.  
The switches of the explosion-proof controller are all mercury switches, and they are dual switches. There are two types of controller materials: ordinary steel and stainless steel.
Medium density: 0.8-1.2 g/cm3
Environmental temperature: -10 to+5 ℃
Contact capacity: Micro switch: 380V, 50Hz, 1A (resistive), 0.5A (inductive)
Mercury switch: 250V, 50Hz, 3A (resistive), 1.5A (inductive)
Explosion proof grade: dIIBT3
The UQK-66C sling is a stainless steel wire rope with a length of 3m.

Working Principle Diagram

Appearance and installation dimensions


terminal block



Installation Diagram