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    Rotary Paddle Level Switch

    Buy favorable price rotary paddle level switch online. This is a sensor device designed to monitor and control the level of bulk solids in bins, hoppers, and silos. Optional voltage of 220V AC, 110V AC, 24V DC, blade speed 1rpm. Consisting of a rotating paddle, this switch is inserted into the container, and as the material level rises or falls, the paddle's rotation is impeded.
    SKU: ATO-PLS-004
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    ATO rotary paddle level switch is used for point-level detection of bulk solids and powders in bins, silos, and hoppers. It consists of a rotating paddle that extends into the material. It offers reliability, simplicity, and versatility in a wide range of applications, contributing to efficient and safe bulk material handling processes.


    • Model: ATO-PLS-004
    • Power Supply (Optional): 220V AC, 110V AC, 24V DC
    • Withstand Voltage: 1500V AC x 1 min
    • Applicable Proportion: Above 0.5G/cm3
    • Consumption Temperature: 4W
    • Blade Speed: 1rpm
    • Measuring Torque: 1N.m
    • Working Temperature: -20~ 80℃ (400℃ can be customized)
    • Insulation Resistance: ≥100MΩ
    • Dielectric Strength: 1500V x 1 min
    • Protection Level: IP65
    • Blade Material: SUS304 Stainless Steel


    Rotary paddle level switch wiring


    • When installing horizontally, it is recommended to install the paddle level switch at an angle of 15°C~20°C.
    • The entrance of the junction box must face downwards, and the cable fixing nut must be locked.
    • When sending power, make sure the voltage is correct.
    • The controlled line load must match the switch contact capacity.
    • Avoid bridge breakers or vibration motors near the rotary paddle level switch.
    • Avoid installing the switch close to the material inlet to reduce damage to the blades and malfunction due to unloading; if the switch must
    • It must be installed near the feed inlet. Please install a 2mm wide protective barrier 200mm above the switch.
    • When the shaft length-adjustable switch is disassembled and installed on-site when the universal joint is connected to the drive shaft, the locking nut must be coated with Oxygen-deficient glue and then locked with a wrench.
    • During on-site installation and maintenance, the warning of "open the cover after cutting off the power supply" must be followed.
    • There are no toxic gases that corrode aluminum alloys at the installation site.
    • The maximum temperature of the medium being measured should not exceed the temperature indicated on the product label.
    • When installing the switch, please do not directly hit the blade and transmission shaft.

    Tips: How does a rotary paddle level switch work?

    A rotary paddle level switch operates based on the principle of mechanical obstruction. The device consists of a rotating paddle typically housed inside a bin or storage vessel at a predetermined level. The paddle is connected to a motor or drive mechanism outside the vessel. When the material in the vessel is below the set level, the paddle rotates freely.

    As the material level rises and reaches the paddle, it encounters resistance. The increased resistance hinders the paddle's rotation. Once the paddle is impeded or completely stops, it triggers a switch mechanism connected to the drive. This switch activation serves as a signal for level detection. The switch output can be connected to alarms, indicators, or control systems to alert operators or automate processes based on the material's level.

    A rotary paddle level switch provides a simple and effective means of detecting material levels by utilizing the mechanical obstruction caused by the material reaching a specific point in a storage vessel.

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