Cement | flour | bulk materials rotary | rotating motion level sensor | detector | 230VAC | 5A/250V SPDT | IP65

The switch is suitable for level control of grain, animal feed, cement, plastics, chemical fibres and other bulk products. It can be used as a high-level or low-level sensor, depending on the mounting position and control circuit.

The operating principle of the rotary paddle switch is based on the mechanical resistance created by bulk material against the rotating paddle. Therefore, this principle is intended for grain, pellets, powders and other bulk materials rather than conventional liquid level measurement.

The integrated microswitch provides an SPDT changeover contact with an electrical rating of up to 5A / 250VAC. The contact can be used to transmit a point level signal to a PLC, contactor, interposing relay, visual or audible alarm system, or other compatible control equipment.

The paddle must be able to rotate freely and must not touch the tank wall, internal structures, pipes or other equipment. The installation location should be selected so that the material reaches the paddle naturally and the paddle is not damaged by a direct, heavy flow of falling material.

The rotary level switch can be used in various manufacturing and processing systems where it is necessary to detect whether bulk material has reached a specific point in a tank. The device is suitable for process hoppers, silos, storage tanks and dosing systems.

• Simple electromechanical operating principle does not require complex measurement of material parameters.
• SPDT 5A / 250VAC contact allows convenient transmission of the point-level signal to a control circuit.
• SUS304 stainless steel paddle is designed for direct contact with bulk material.
• IP65 enclosure protects the internal components against dust and water jets in accordance with the IP65 protection rating.
• G1" process connection enables convenient installation into the tank structure.
• M20x1.5 cable entry is provided for electrical connection.
• -20°C to +80°C operating temperature allows use in various industrial environments.
• Low 3W power consumption is required to drive the paddle.

• Designed for point level rather than continuous level measurement: the switch provides a contact signal when a specific level is reached, but does not measure the exact material height.
• Mechanical contact with the material: the paddle must physically contact the monitored bulk material.
• Not suitable for conventional liquid level measurement: the operating principle is based on bulk material stopping the rotating paddle.
• Normal operating pressure: the product is not intended for pressurised vessels unless separately approved by the manufacturer.
• Installation location is important: a strong directly falling material stream may create additional mechanical load on the paddle.
• Clearance is required for paddle rotation: there must be no mechanical obstructions around the paddle.

In a grain hopper, the level switch is installed at the maximum permitted filling level. As long as the grain does not reach the paddle, the 230VAC synchronous motor rotates it at approximately 1 rpm. When the hopper becomes full, the grain surrounds the paddle and stops its rotation. The internal mechanism switches the SPDT contact, and this signal can be transmitted to a controller that stops the conveyor or activates a full-tank alarm.

It is designed to detect whether bulk material has reached a specific location in a tank. It is a point level switch rather than a continuous level transmitter.

Under normal conditions, the paddle rotates. When bulk material surrounds it and creates sufficient mechanical resistance, the paddle stops and the internal mechanism switches the signal contact.

The switch supply voltage is 230VAC.

An SPDT microswitch contact is used, with an electrical rating of up to 5A / 250VAC.

The paddle rotation speed is approximately 1 rpm.

The paddle is made of SUS304 stainless steel.

Yes. Rotary paddle level switches are designed for point level control of grain, animal feed and other bulk products.

Yes, provided that the specific process conditions, temperature, pressure and material properties are within the technical specifications of the device.

This model is designed for bulk materials. For liquids, float, electrode, hydrostatic, ultrasonic or radar level sensors are generally used.

Yes. When installed in the upper section of a tank, the contact signal can be used to stop filling or activate a full-tank alarm.

Yes. When correctly installed in the lower section of a tank, a change in the contact state can be used to monitor the minimum material level.

According to the dimensional drawing, a G1" process connection is used.

The electrical cable entry is M20x1.5.

The enclosure protection rating is IP65.

The rotary paddle level switch must be installed so that the paddle can rotate freely and is not continuously exposed to a direct, heavy stream of falling material. The process connection, mechanical mounting and cable entry must be installed in accordance with the manufacturer’s requirements. Electrical 230VAC connection work must be carried out by a qualified specialist with the power supply disconnected before work begins. The 5A / 250VAC SPDT contact rating must not be exceeded. When switching inductive loads, contactors or higher-power equipment, the use of a suitable interposing control circuit is recommended.