LCPBA01 (NPN) DC 8-24V Capacitive Liquid Level Sensor Non-contact Water Level Detection Sensor NPN PNP Touch Switch for Water Tower Fish Tank

LCPBA01 is a non-contact liquid level sensor developed and produced by eletechsup. It can detect the height of the liquid level through the outer wall of the container.

Description:
 
Power supply voltage: DC 8-25V (recommended 12V);
Working current: 8-12MA (12V);
Output mode: NPN or PNP;
Output current: ≤100mA;
Response time: 500ms;
Working temperature: -20-75℃;
Sensing thickness: ≤5mm;
Lead length: 200MM
Lead interface: XH2.54 3P
Size: 59 X 26 X13MM;
Weight: 12g.
 
How to use:
1 The product has been tested and calibrated before delivery. After power on, the light will turn on when it is pressed against the outer wall of a container with water. The light will turn off when it is pressed against the outside of a container without water. (Please see the first 10 seconds of the video of ''LCPBA01 DEMO 1'')
 
2 If there is no light, you can re-adapt: ​​please open the shell, press against the outer wall of the container with water, short press the KEY button, the LED light will flash 4 times and then turn on, and the adaptation is complete. (Please see the video after 10 seconds of ''LCPBA01 DEMO 1'')
 
3 If the second step cannot be adapted, please recalibrate the sensitivity: (Please see the video of ''LCPBA01 DEMO 2'')
1 Fill the container with some water.
2 Press against the outer wall of the container (where there is no water), press and hold the button until the LED light flashes quickly and then turns off.
3 Press against the outer wall of the container (where there is water), short press the button, the LED light will flash 4 times and then turn on.


Abnormal handling:
Q1: After opening the shell and pressing the KEY button, the light does not flash.
A1 Please check whether it is powered by a DC 8-24V power supply, and check whether the positive and negative poles of the power supply are reversed.
 
Q2: After pressing the KEY button, the light flashes, but it is not always on.
A2: 1 Please press the container with water. 2 Please check whether the PCB board is close to the shell. 3 The container may be too thick, please replace the container.
 
Q3: The light will turn on when you touch the back of the shell or the desktop with your hand.
A3: This is normal. Because this sensor is equivalent to a capacitive touch switch.
 
Q4: The port level change of the NPN version cannot be measured with a multimeter.
A4: This is normal. When NPN has output, it is low level, and when there is no output, it is suspended.
 
Q5: The sensitivity of multiple boards is inconsistent.
A6:
1 Please recalibrate the sensitivity. How to calibrate sensitivity:
1 Fill the container with some water.
2 Press the container against the outer wall (where there is no water). Long press the button until the LED light flashes quickly and then turns off.
3 Press the container against the outer wall (where there is water). Short press the button, and the LED light flashes 4 times and then turns on.

2 Please press the PCB board and the shell again. You can use glue if necessary.