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    Photoelectric Liquid Level Sensor, PNP/ NPN

    5 out of 5 based on 1 reviews | Write a review
    Photoelectric level sensor with 3 wire for sale, M12 thread type, NPN/ PNP signal output directly drives the relay. Photoelectric switch is a kind of liquid level controller which detects with infrared ray to avoid inducting wrong action by interference of sun or light. It is easy mounting and can be used in impure or adhesive liquid.
    SKU: ATO-MR-M12
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Photoelectric liquid level sensor can be widely applied in water purification, sewage treatment, electrical industry, hydraulic machinery and so on. It provides protection of antipole, overvoltage, short circuit and transient.


    Model ATO-IR1902D
    Structure Non-metallic structure
    Type Common type High temperature resistant type
    Material PSU PSU
    Signal Output NPN/ PNP
    Contact Form NO/ NC
    Action Mode 3 wire: Not switchable
    Tread Type M12 (12mm)
    Detected Object Water/ Neutral solution
    Detection Accuracy Less than plus or minus 1mm
    Voltage DC5-24V (including voltage fluctuation 10%)
    Max Current Consumption <15mA
    Load Current below 100mA
    Response Time 1ms, 0.25ms
    Electrical Life More than 100,000 times (opening and closing frequency: 1800 times/hour)
    Environmental Illumination Incandescent Lamp: 5000lx or less. Sunlight: 80,000lx or less
    Operating Temperature -20~+80℃ -20~+110℃
    Waterproof Level IP67 IP62
    Insulation Resistance above 20mΩ (500VDC)
    Protection Level IP67
    Connection Method Lead-out type (wire length 30cm)
    Lead color definition 3 wire: Brown VCC; Blue GND; Yellow single
    Mass (Sensor Only) about 20g
    Accessories Sealing ring, nut

    Dimensions (Units: mm)

    Dimensions of Photoelectric Liquid Level Sensor

    3 Wire Signal Output and Circuit Diagram

    Signal output and circuit diagram of photoelectric liquid level sensor

    Mounting Method

    Mounting Method of Photoelectric Liquid Level Sensor


    Applications of Photoelectric Liquid Level Sensor

    Tips: What is a photoelectric liquid level sensor?

    In recent years, with the continuous development of electronic technology and automation, liquid level measurement and control technology has been greatly improved. The functions of the photoelectric liquid level sensor are more and more perfect for multiple industries, such as petrochemical industry, metallurgy, electric power, pharmaceutical, water supply and drainage, environmental protection system. All kinds of medium level measurement is inseparable from the liquid level switch. The importance of liquid level sensor is becoming more and more prominent, even directly affects the quality of the products.

    Photoelectric level sensor is a common type of liquid level switch that contains an infrared LED and a photoelectric receiver. The light from the LED is directed into a prism at the top of the sensor. If there is no liquid, the light from the LED is reflected directly from the prism back to the receiver. When a liquid is immersed in a prism, light is refracted into the liquid so that the receiver receives little or no light. The receiver can drive the electrical switch of the internal photoelectric level switch to activate the external alarm or control circuit. The optical level sensor has a very high accuracy and repeatability in the process of monitoring the position of the liquid level. The repeatability is up to ±1mm in the monitoring of the liquid interface.

    Existing reviews of Photoelectric Liquid Level Sensor, PNP/ NPN
    Perfect photoelectric liquid level sensor
    Great photoelectric liquid level sensor. It works as expected and delivers perfect responses. I definitely will buy it again when the time comes. Thanks for the great product.
    From: Angvall | Date: 11/10/2021
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