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    Ultrasonic Level Sensor, Output 4-20mA/1-5V/RS485, 0-40M

    5 out of 5 based on 2 reviews | Write a review
    Ultrasonic level sensor has high accuracy 0.3%FS and measuring range 0-5m, 0-10m, 0-15m to 0-40m. It also adopts integrated structure and mainly consists of OLED display, waterproof connectors and ultrasonic probe. Ultrasonic level sensor using advanced non-contact ultrasonic measurement technology can be used for liquid/solid/powder level of tapered/spherical tank, tapered feed outlet tank, sewage tank, river, lake, etc. It has optional output signal 4-20mA, RS485, HART, 2 relays or 3 NPN, optional power supply DC 12-16V, DC 24-28V, AC 220V or built-in battery.
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    Delivery date: 6-12 days

    Ultrasonic level sensor for non-contact liquid/solid/powder tank level measurement has maximum measuring range 0-40m, can transmit and output 4-20mA, RS485, 2 relays, 3 NPN signal to remote control system.


    Model ATO-LEVS-ZP
    Shipping weight 2.5kg
    Measuring range * 0-5m, 0-10m, 0-15m, 0-20m, 0-30m, 0-40m
    Accuracy 0.3%FS
    Resolution 1mm
    Display OLED display
    Working frequency 20~350kHz
    Output signal * 4-20mA, RS485, HART (2-wire), 2 relays (AC 250V/5A, DC 24V/10A), 3 NPN
    Power supply * DC 12-16V (only for RS485 output), DC 24-28V, AC 220V/50Hz, built-in battery
    Load 4-20mA/600Ω
    Power dissipation <1.5W
    Response time 500ms
    Material ABS and PP
    Communication protocol Our own protocol
    Medium Water, fuel, oil, metal, or other liquid/solid/powder
    Environment temperature OLED display: -20~+60℃ (-4~+140℉), ultrasonic probe: -20~+80℃ (-4~+176℉)
    Working pressure 14.7 psi
    Protection class OLED display: IP65, ultrasonic probe: IP68
    Electrical connection 2 waterproof connectors M20*1.5mm
    Size Φ92mm*198mm*M60, Φ92mm*270mm*DN80
    Installation* Nut with thread M60*2mm, DN80 non-standard flange
    Filtering Five adjustable filtering: super fast, fast, normal, stable, No
    Function Temperature correction, display correction, linear correction
    Warranty 12 months

    Note: * denotes optional parameters, you can select parameters in drop-down lists to finish your order. Some customizable parameters can't be selected from the lists directly, please contact customer service staff for further communication.

    Installation diagram:
    Ultrasonic level sensor output 4-20mA/1-5V/RS485/Relay/NPN 0-40m Installation diagram
    Tips: 6 considerations for using ultrasonic level sensors

    1. There should be no obstacles under the sound wave. Since the ultrasonic level sensor uses the principle of sound wave reflection to achieve liquid level measurement, if there are obstacles, it will affect the ultrasonic emission, resulting in signal loss and affecting the measurement effect.
    2. Ultrasonic liquid level sensor measurement is prone to dead zone. This is because, during the transmission of ultrasonic pulses, due to the mechanical inertia occupying the transmission time, a small area near the ultrasonic transducer cannot receive sound waves, and the area that cannot be measured is called a dead zone. The size of the dead zone is related to the measurement distance of the ultrasonic wave. The smaller the measurement distance, the smaller the dead zone. The larger the measurement distance, the larger the dead zone.
    3. Ultrasonic tank level sensor measurement is easily affected by temperature. In actual measurements, changes in temperature cause changes in the speed of sound, which in turn lead to level measurement errors.
    4. It is not suitable to measure level in pressure vessels. Since the pressure mainly affects the level probe, and there is a certain relationship between the pressure and the temperature. The change of the pressure will affect the change of the temperature, and then the change of the speed of sound, which will affect the accuracy of the measurement.
    5. Dust is the most influential factor of ultrasonic level sensor measurement. The dust environment has very little influence on the speed of sound, but the attenuation of the sound wave is obvious, so it is best not to use it in this occasion.
    6. The ultrasonic level sensor cannot be used in the occasions where there is water mist, a medium that is easy to produce a large amount of foam, and a volatile medium. All these mediums are easy to absorb sound waves or interfere with sound wave emission, resulting in signal loss and reduced accuracy.
    Existing reviews of Ultrasonic Level Sensor, Output 4-20mA/1-5V/RS485, 0-40M
    I hope will give me suggestions for buying an ultrasonic level sensor
    I need an ultrasonic level sensor, non-contact water level measurement. What do you recommend?
    From: Goalliee | Date: 19/08/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    You have to specify the following, so you can recommend the most suited model. What are the requirements for measuring range, output signal, power supply, horn antenna size and installation?
    Love this ultrasonic level sensor
    This ultrasonic level sensor works really well. It's just the right weight for me to use in my lab. I followed the installation instructions on the product details page. I love this ultrasonic level sensor.
    From: Farrah | Date: 13/07/2022
    Was this review helpful? Yes No (0/0)
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