Non-contact Liquid level Sensor

  • Non-contact Liquid level Sensor
  • Non-contact Liquid level Sensor
LLS040100
Description: Capacitive
Function: Non Contact Liquid Level Sensor
Certification: RoHS,Patent
Trade Term: EX-WORK
Original Place:Taiwan

Please select which you want to ask the following product specifications:

*Model:  
 

LLS040100 Non contact Liquid Level detecting Sensor Module

Water-level-sensor-LLS040100.jpg


Liquid Level Changing and Signal Output

During usage, defining different liquid level, the level sensor module will send the logic signal.  The signal and the corresponding change of the liquid level will be shown as below :

  • When the liquid level is lower than the sensing area fixed height, the indicator light will be off and the logic signal is low (L).
  • When the liquid level is high er than the fixed height, the indicator light will be on and the logic signal is high (H).
  • When the liquid level is between the low level and high level , the logic signal is uncertain.

**The module is functioned with auto calibration . P lease install it when there's no liquid in the application. Any changing of liquid level or circumstances will be calibrated automatically.

**Maximum Sensing Distance D at 25 °C : About 7.0 mm from water to sensing area includes the thickness of container


Electrical Characteristic

Parameter SYM. Min. Typ. Max. Unit
Operating Voltage Vdd 4.5 5.0 5.5 Volt


Absolute Maximum Rating(Ta=25

Operating Temperature Topr -20℃ ~ +80
Storage Temperature
Tstg
-40℃ ~ +85



  • Function: Non contact Liquid level detecting
  • In the actual use, when the liquid level is higher or lower than the sensing area height, there is corresponding TTL logic signal to each level change, respectively Auto calibration function included.
  • The module is used to detect the existence of liquid by sensing the capacitance, and the capacitance of liquid will be changed with temperature, especially water. Auto calibration will be started while sensing big changing of capacitance.
  • If the liquid will have been sensed the change in temperature, please be noted that the maximum sensing distance D will be also changed. Therefore, if fixed sensing distance, the sensed height of liquid level can vary due to the impact of liquid temperature. In practice, the change in the height of liquid level should be determined by actual measurement
  • Attention: This level sensor module uses the embedded sensing capacitance to detect the change of liquid level; therefore, it must keep all metal articles or human body influencing the capacitance far away from the sensing area to avoid the disoperation. There should be a certain distance between metal article or human body and sensing area. The distance should be determined by actual measurement.
  • The male connector ( pitchpitch:1.25mm ) and the wire are not included in the standard package. It 's need ed to purchase if required.
  • For customized design, it’s recommend that the line length between the sensing area and the main IC should not exceed 3 5cm.
  • Please do not exceed the rated load as there will be a risk of disabling the product function.
  • For the continued product improvement as one of the company policy, specifications may change or update without notice. The latest information can be obtained through our sales offices. Normally, all products are supplied under our standard conditions.


The variation of liquid height in upper level or lower level of the non metallic container can be detected by using this sensor without having contact with the liquid,especially for drinking water filter, coffee machine and etc. T he traditional sensors need to be installed inside of the container to detect the liquid level, having the risk of contaminating the drinking water. It can provide consumer a more reliable selection.





Coffee / Water Dispenser

Other applications that need non contact liquid level detect ion

Model : LLS040100