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LIQUID LEVEL SENSORS

Integrating dual monitoring of liquid level and temperature, using magnetic resistance liquid level detection+PT1000 temperature element, supporting IO-Link communication protocol, making it easy to connect to various industrial control systems. The product adopts a high brightness large digital tube and a numerical mirror design, with intuitive and clear readings, and strong on-site visual recognition. The temperature measurement range covers -50 ℃ to 150 ℃, and the liquid level detection accuracy can reach 5mm, suitable for complex working conditions. It has multiple output modes, including analog, switch, NPN/PNP/push-pull, normally open/normally closed, etc. The display part supports 300 ° rotation and is flexible to install. Equipped with simple button operation, parameter locking, and IP65 protection level, it is an ideal choice for liquid level and temperature monitoring.

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SENTINEL - Liquid Level Sensor

The SENTINEL liquid level sensor is a critical device designed for detecting and measuring the height of liquids, providing real-time monitoring of level changes in containers or tanks. It is widely used in industrial automation, environmental protection, chemical energy, oil storage and transportation, food processing, and medical equipment, helping enterprises enhance safety, automation, and management efficiency.

Features
  • Simple structure, reliable performance: The sensor’s design and working principle are straightforward, with a low failure rate, enabling stable operation in harsh industrial environments.
  • High-precision measurement: By directly contacting the liquid, the sensor provides accurate level readings with a resolution up to 5mm.
  • IO-Link digital transmission: Equipped with an advanced IO-Link digital communication interface to enhance measurement accuracy and anti-interference ability, enabling digital data transmission and remote configuration.
  • Flexible output and configuration: Supports PNP/NPN/push-pull outputs. Users can configure normally open or normally closed states, with temperature signals supporting 4…20mA output.
  • Strong anti-interference capability: The sensor detects magnetic field changes through magnetic-sensitive components, minimally affected by electrical interference or noise, making it suitable for complex industrial settings.
  • Versatile applications: Widely used in industries such as chemicals, oil, pharmaceuticals, and food processing. Ideal for monitoring levels in hydraulic tanks, reservoirs, and water storage systems.
  • Durable materials: Made from corrosion-resistant materials like stainless steel or high-strength plastic, it is suitable for long-term use with corrosive liquids, oils, and wastewater.
  • Robust design: The housing and probe rod are made of 304 stainless steel, with customizable probe length. The float is made from NBR material, offering excellent oil and wear resistance.
  • Simplified installation and cost-efficiency: Integrated design for level and temperature monitoring reduces purchasing and installation costs, minimizes maintenance complexity, and improves production efficiency.
    • Working Principle

    The Sentnai level sensor operates via the vertical movement of a float. The float contains a built-in magnet and moves up or down with the liquid level. Magnetic-sensitive components (such as Hall effect or magnetoresistive sensors) detect the float’s position to accurately determine the liquid level.

    Application Scenarios

    SENTINEL's level sensors are widely applied in food and beverage, emulsion, pharmaceutical, chemical, and water treatment industries, enabling precise level monitoring in various liquid tanks, reactors, and pipeline systems.

  • In beer production, level sensors are used throughout brewing, fermentation, storage, and filling stages, effectively preventing overflows or dry runs, and enhancing production efficiency and hygiene safety.
  • Smart level sensors use the IO-Link communication protocol for remote parameter configuration and status monitoring, simplifying system integration and supporting digital transformation in breweries.
  • With hygienic design and high protection levels, SENTINEL sensors support CTP/CIP/SIP cleaning processes, ensuring reliable and stable food-grade production operations.
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