As a non-contact liquid level detection device, the external liquid level switch has been widely used in the field of industrial automation due to its unique advantages. The following will provide a detailed introduction to its specific application scenarios in different industries:

1、 Petrochemical industry

In the petrochemical production process, a large amount of flammable, explosive, toxic and harmful media are involved, and the safety and reliability requirements for liquid level detection are extremely high. The external liquid level switch adopts non-contact measurement method, which does not require opening holes on the container, avoiding safety accidents caused by medium leakage. For example, in the liquid level monitoring of oil storage tanks, the external liquid level switch can accurately detect the liquid level height inside the tank. When the liquid level reaches the set upper or lower limit, an alarm signal is promptly issued to prevent oil spillage or emptying, ensuring production safety. At the same time, its characteristics of not being affected by factors such as medium density and conductivity also enable it to adapt to the detection needs of various complex oil products.

2、 Pharmaceutical manufacturing industry

Pharmaceutical manufacturing has strict requirements for the cleanliness of the production environment and the reliability of equipment. The application of external liquid level switches in pharmaceutical manufacturing is mainly reflected in the liquid level control of drug storage tanks and reaction vessels. Due to the corrosive or high cleanliness requirements of liquid medicine, traditional contact level switches may pose a risk of contaminating or corroding the liquid medicine. The external liquid level switch is detected through the outer wall of the container, without direct contact with the liquid medicine, effectively avoiding these problems and ensuring the quality of the liquid medicine and the cleanliness of the production environment.

3、 Water treatment industry

In the process of water treatment, it is necessary to accurately control the liquid level of various water tanks and reservoirs to ensure the normal operation of water treatment. The external liquid level switch can be applied to regulating tanks, sedimentation tanks and other places in sewage treatment plants to monitor liquid level changes in real time. When the liquid level is abnormal, it can quickly provide feedback signals to control the start and stop of the water pump, prevent the water tank from overflowing or draining, and ensure the stability and efficiency of the water treatment system. In addition, it has strong adaptability and can be applied to pools of different materials and shapes, providing a reliable liquid level detection solution for the water treatment industry.

4、 Food and beverage industry

The food and beverage industry has extremely high requirements for hygiene and safety in the production process. The application of external liquid level switches in food and beverage production is mainly reflected in the monitoring of liquid levels in raw material storage tanks and finished product storage tanks. Due to the sticky or perishable nature of food and beverage raw materials and finished products, traditional contact type liquid level switches may have difficulty cleaning or affect product quality. The non-contact measurement method of the external liquid level switch avoids direct contact with the medium, is easy to clean and maintain, and meets the hygiene standards of the food and beverage industry.