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Liquid Sensors

Non-contact Liquid Level Detection Sensor

SKU: SEN0368

This is a non-contact liquid level sensor with status indicator and adjustable sensitivity. It can be used in liquid detection of non-metallic container or pipe(outer diameter>11mm), suitable for all types of detection of curved or flat surfaces, arcs, cylindrical containers or piping fluids. The status feedback of the sensor can be given in real-time. Besides that, the sensor comes with a 4pin sensor adaptor that can directly collect digital signal, convenient for connecting with Arduino or other main-controllers. This liquid level sensor can be widely used in liquid detection of a tank, water dispenser, etc.

Front of white plastic container with black/white label and red dot, non-contact capacitive liquid level sensor for OD>11mm containers.-DFRobot product sku:SEN0368 image.

Downloadable Resources

  • Docs
  • Tech Specs

    • Specification

    Parameter Value
    Power Supply 5~12V
    Output switch quantity
    Response Time 500ms
    Operating Temperature -5~105°C
    Suitable Container Outer Diameter ≥11mm
    Liquid Level Error ±1.5mm
    Material ABS
    Waterproof Performance IP65

    Pinout

    Method for instal jumper cap of switch board

    Connection DOWN is pull-down and connection UP is pull-up.

    4pin Adapter Pinout

    Num Label Description
    1(Left, Brown) VOUT Liquid Sensor Power Positive, +5V~+12V
    2(Left, Blue) GND Liquid Sensor Power Negative
    3(Left, Black) IO1 Liquid Sensor Forward/Backward output select
    4(Left, Yellow) IO2 Liquid Sensor Level Signal Output
    1(Right, Red) VIN Power Positive
    2(Right, Black) GND Power Negative
    3(Right, Blue) IO1 Liquid Sensor Forward/Backward output select
    4(Right, Green) IO2 Liquid Level Signal Output

    FAQ

    • I'm interested in these sensors for detecting water inside a water storage tank, just wondering what is the difference between this and the other sensor https://www.dfrobot.com/pro...
      Both seem to accomplish the same thing, is there a meaningful performance difference between these?
      Thanks!

      Hi. What is the current draw for this sensor?

    • The indicator keeps on all the time.

      1. The sensitivity is too high, please adjust it to a suitabe value.

      2. The init parameter is revised abnormally, in this case the sensor needs to be returned to the factory for restarting init.

      3. There are impurities or other metal objects contacted with the sensor closely, please clean the sensor and keep it away from any metal objects.

    • The liquid level sensor doesn't work when powered on (the indicator keeps off when the liquid level reached the sensing point, and it has no response to the sensitivity adjustment.).

      1. The sensor may not be in a good connection with the power source, please check the power connection.

      2. The power cable may be reversely connected, please check it.

      3. The power module is broken, change the power module and try again.

      4. The sensitivity may be too low, increase the sensitivity to a suitbale value.

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