China made VLC 03L 230V Water pump control relay switch AC 220V liquid level control relay probes for liquid level control relay

  VLC-03L  230V Water pump control relay switch

  ♥ 5 – 100 KΩ Sensitivity Adjustable.

1. Applications: For civilian use water tower,reservoir of water levle control

2. Function Features:

****Modularization design,width:36mm;

****Sensitivity:5 -100 ,adjustable,applicable for various liquids;
****With adjustable operation delay to prevent liquip from fluctuating;
****Two operating modes available:bipolar probe and tripolar probe;
****LED indication indicates the state of water level;
****Usable for water supply and drainage; 
****Installation: Both bolt installation and guide-rail installation realized.

3. Connection: 

Three electrodes are connected to the “U”,”L” and ”B” terminals: 

The upper level electrode(U)                                                       : Top (U) 
The lowest level electrode (L)                                                      : Bottom (L) 
The earth electrode (B)                                                                 : Earth (B) 

---When the liquid level reaches the upper level electrode (U), then the relay energizes its contacts to turn on the draining pump. The OUT light is turned on
---When the liquid level reaches the lowest level electrode (L) ,then the relay de-energizes its contact and turns the pump off. The OUT light is turned off.

According to the liquid conductivity ,sensitivity(Impedance between electrodes)can be adjusted in the range of 5-100KΩ using the knob on the front side of the relay.

4. Technical Data: