Working Principle:
Intelligent non-contact liquid level sensor use the water induction capacitor to detect the liquid.When no liquid approach the sensor,the sensor has the certain static capacitance to the gound due to the distributive capacitance exist.When the liquid level rise and close to the sensor,the liquid's parasitic capacitance will be coupled to the static capacitance then enable the sensor's capacitance increase and the changed capacitance signal will be imported into the controlling IC to coverter it into some signal viration, use some algorithm to detect and judge this singal viration level, when this signal viration excess certain values will be considered the liquid level reach the detecting point.

Features:
Applicable to non-metallic containers without direct contact with the liquid, not affected by scale or other impurities.
Intelligent liquid level benchmark adjustment and level memory function, liquid level display mode.
Electronic circuit structure rather than machinery ensures stable performance, durability and a long service life.
High stability, high sensitivity, strong anit-interference ability make sure it won't be affected by electromagnet, special designed to deal with power frequency interference and common mode interference
NPN signal output, where sensor the liquid, it will output low level otherwise there is not signal output.

Specifications:
Model:XKC-Y25-NPN
Output Signal:NPN
Input Voltage: DC 5-24V
Current: 5mA
Output Voltage:InVCC(high level), 0V(low level)
Output Current: 1-100mA
Response Time: 500ms
Operation Temperature: 0-105?
Induction Thickness(Sensitivity):0-13mm
Humidity:5% -100%
Material:ABS
Waterproof Grade:IP67
Size: 28X16.9mm/1.10X0.67inch(D*H)

Product Features

• Intelligent non-contact liquid level sensor module applicable to non-metallic containers without direct contact with the liquid, not affected by scale or other impurities
• Intelligent liquid level benchmark adjustment and level memory function with indicator to inform when detecting the liquid and support multi points in series connection
• Electronic circuit structure rather than machinery ensures stable performance, durability and a long service life, NPN singal output(when detect the liquid output low level otherewise no signal output)
• Strong compatibility through a variety of non-metallic material containers, such as plastic, glass, ceramics etc, with a 13mm or more induction distance and iquid, powder, particles can be detected
• DC 5-24V wide voltage input compatible with most electric system and products
  Ship it out by USPS with tracking information and 7-17 days delievery time usually

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