Cart ( )Liquid level switch: a key device for monitoring liquid levels
2024/1/22 9:42:33
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The liquid level switch is a device that monitors changes in liquid height and implements operations or alarms. It consists of a sensor and a control system. It is widely used in fields such as industry, agriculture and environmental protection, and plays a vital role in liquid storage, process control and safety protection. This article will introduce the definition, types and functions of liquid level switches, and introduce their working principles in detail.
Types and functions of liquid level switches
1. Float-type liquid level switch: This is one of the most common liquid level switches. It senses liquid level changes through the floating ball. When the liquid level reaches the set value, the float triggers the switch to achieve corresponding control operations. Float level switches are widely used in liquid storage tanks, pools and water treatment systems for liquid level monitoring and flow control.
2. Conductive liquid level switch: This liquid level switch uses the principle of conductivity of liquid to detect. By placing electrodes above the liquid level, when liquid touches the electrodes, a conductive path is formed, triggering switch operation. Conductive liquid level switches are widely used in chemical, petroleum and food processing industries for liquid level control and leak alarms.
3. Ultrasonic liquid level switch: This switch uses ultrasonic technology to measure liquid level. It calculates the liquid level through time delay by transmitting ultrasonic signals and receiving the reflected beams. Ultrasonic liquid level switch is suitable for various liquids, including corrosive liquids, high temperature liquids and viscous liquids. It is commonly used in storage tanks, tankers, sewage treatment and petrochemical industries for real-time monitoring of liquid levels and control of related equipment.
4. Vibrator type liquid level switch: This type of switch uses the principle of vibration to detect liquid level. By placing a vibrator in the liquid, when the liquid level touches or leaves the vibrator, the vibration frequency changes, triggering the switch operation. Oscillator level switches are commonly used in applications such as liquid control, flow metering and overflow protection.
How the liquid level switch works
1. The working principle of the float-type liquid level switch: The float-type liquid level switch senses changes in liquid level through the floating and sinking of the float. Floats are usually made of lightweight materials such as plastic or stainless steel. When the liquid level rises, the float rises and the internal magnetic switch closes; when the liquid level drops, the float sinks and the magnetic switch opens. The liquid level switch implements corresponding control operations by detecting changes in switch status.
2. Working principle of conductive liquid level switch: Conductive liquid level switch uses the conductivity principle of liquid to detect liquid level. Two electrodes are placed above the liquid level. When the liquid touches the electrodes, a conductive path is formed and current flows. By detecting the presence of electrical current, the level switch can determine the level of the liquid. When the liquid level reaches the set value, the liquid level switch triggers relevant operations or alarm signals.
3. Working principle of ultrasonic liquid level switch: Ultrasonic liquid level switch uses ultrasonic technology to measure liquid level. It emits ultrasonic signals and receives the reflected beams to determine the liquid level through a time delay. Ultrasonic level switch usually consists of ultrasonic sensor, transmitter and receiver. When the liquid level reaches a preset threshold, the ultrasonic liquid level switch triggers related operations.
As an important liquid level detection and control equipment, liquid level switch is widely used in various industries. Different types of liquid level switches have different working principles and application ranges, and can be selected according to needs in practical applications. By accurately sensing changes in liquid level, the liquid level switch can realize automatic control, equipment protection and alarm functions, improving production efficiency and safety.
Types and functions of liquid level switches
1. Float-type liquid level switch: This is one of the most common liquid level switches. It senses liquid level changes through the floating ball. When the liquid level reaches the set value, the float triggers the switch to achieve corresponding control operations. Float level switches are widely used in liquid storage tanks, pools and water treatment systems for liquid level monitoring and flow control.
2. Conductive liquid level switch: This liquid level switch uses the principle of conductivity of liquid to detect. By placing electrodes above the liquid level, when liquid touches the electrodes, a conductive path is formed, triggering switch operation. Conductive liquid level switches are widely used in chemical, petroleum and food processing industries for liquid level control and leak alarms.
3. Ultrasonic liquid level switch: This switch uses ultrasonic technology to measure liquid level. It calculates the liquid level through time delay by transmitting ultrasonic signals and receiving the reflected beams. Ultrasonic liquid level switch is suitable for various liquids, including corrosive liquids, high temperature liquids and viscous liquids. It is commonly used in storage tanks, tankers, sewage treatment and petrochemical industries for real-time monitoring of liquid levels and control of related equipment.
4. Vibrator type liquid level switch: This type of switch uses the principle of vibration to detect liquid level. By placing a vibrator in the liquid, when the liquid level touches or leaves the vibrator, the vibration frequency changes, triggering the switch operation. Oscillator level switches are commonly used in applications such as liquid control, flow metering and overflow protection.
How the liquid level switch works
1. The working principle of the float-type liquid level switch: The float-type liquid level switch senses changes in liquid level through the floating and sinking of the float. Floats are usually made of lightweight materials such as plastic or stainless steel. When the liquid level rises, the float rises and the internal magnetic switch closes; when the liquid level drops, the float sinks and the magnetic switch opens. The liquid level switch implements corresponding control operations by detecting changes in switch status.
2. Working principle of conductive liquid level switch: Conductive liquid level switch uses the conductivity principle of liquid to detect liquid level. Two electrodes are placed above the liquid level. When the liquid touches the electrodes, a conductive path is formed and current flows. By detecting the presence of electrical current, the level switch can determine the level of the liquid. When the liquid level reaches the set value, the liquid level switch triggers relevant operations or alarm signals.
3. Working principle of ultrasonic liquid level switch: Ultrasonic liquid level switch uses ultrasonic technology to measure liquid level. It emits ultrasonic signals and receives the reflected beams to determine the liquid level through a time delay. Ultrasonic level switch usually consists of ultrasonic sensor, transmitter and receiver. When the liquid level reaches a preset threshold, the ultrasonic liquid level switch triggers related operations.
As an important liquid level detection and control equipment, liquid level switch is widely used in various industries. Different types of liquid level switches have different working principles and application ranges, and can be selected according to needs in practical applications. By accurately sensing changes in liquid level, the liquid level switch can realize automatic control, equipment protection and alarm functions, improving production efficiency and safety.
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