What is a Level Switch?
A Level Switch is an industrial device used to detect and control the level of liquids or solids in tanks, vessels, or pipelines. It generally consists of a sensing element, switch mechanism, housing, and optional mounting accessories. The housing can be made of stainless steel or cast aluminum for durability and corrosion resistance. Level switches are widely used in chemical, food processing, water treatment, HVAC, and industrial automation industries.
Side-mounted Float Level Switch
The side-mounted float level switch is a liquid level control device based on the principle of buoyancy.
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Cable Float Level Switch
The Cable Float Level Switch is a reliable liquid level control device for tanks, wells, and troughs.
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Rod Float Level Switch
The Rod Float Level Switch is a reliable liquid level control device featuring one or more reed switches inside a sealed non-magnetic guide tube.
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RF Admittance Level Switch
The RF Admittance Level Switch for liquids, slurries, and bulk solids. Widely used in oil, chemical, food, wastewater, and power industries.
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Vibrating Fork Level Switch
The Vibrating Fork Level Switch is a maintenance-free level sensor using piezoelectric excitation to detect liquids and solids.
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Optical Level Switch
The Optical Level Switch detects liquid levels via light refraction and reflection, providing accurate, reliable switching for industrial liquids.
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Rotary Paddle Level Switch
The Rotary Paddle Level Switch is a reliable solid material level detection device that operates using a synchronous motor coupled with a clutch.
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Types of Level Switches
Side-mounted Float Level Switch – Detects liquid level at a fixed point, easy to install on tank sides.
Cable Float Level Switch – Suitable for vertical level detection, widely used in storage tanks.
Rod Float Level Switch – Compact design for narrow tank openings; used for point level detection.
RF Admittance Level Switch – Measures liquids and solids with high dielectric constants; ideal for sticky or viscous media.
Vibrating Fork Level Switch – Reliable for liquid detection; vibration frequency changes when covered by liquid.
Optical Level Switch – Uses light refraction for detection; suitable for clean liquids.
Rotary Paddle Level Switch – Detects bulk solids; paddle rotation stops when material is present.
Features of Level Switches
Durable housing: stainless steel or cast aluminum
Wide range of detection methods: float, RF, vibrating fork, optical, rotary paddle
High accuracy and reliable operation
Adjustable set points for point level detection
Resistant to corrosion, temperature, and pressure variations
Easy installation and maintenance
Optional explosion-proof or hygienic designs
Applications of Level Switches
Water and wastewater treatment systems
Chemical and pharmaceutical production
Food and beverage processing
Oil, gas, and petrochemical tanks
HVAC and boiler systems
Bulk solids storage and handling
Level Switch OEM Service
ZINACA Instruments provides complete OEM and ODM services for level switches, including:
Custom housing and mounting options
Detection method customization: float, RF, vibrating fork, optical, rotary paddle
Explosion-proof or hygienic designs
Adjustable set points and electrical outputs
If you require OEM level switch production or custom solutions, please contact us for technical support.
Level Switch Manufacturer
Tianjin ZINACA Intelligent Equipment Co., Ltd. specializes in manufacturing high-quality level switches, including side-mounted, cable, rod float, RF admittance, vibrating fork, optical, and rotary paddle types.
With extensive experience in industrial automation and global export, ZINACA ensures reliable performance, stable supply, and professional technical support.
If you are searching for a trusted level switch supplier or manufacturer, ZINACA Instruments is your professional partner.
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