| Category | Specific Types |
|---|---|
| Liquid Level Switches | Contact type: Float type liquid level switch, electronic liquid level switch, pressure type liquid level switch, radio frequency admittance liquid level switch, capacitive liquid level switch, tuning fork type liquid level switch |
| Liquid Level Sensors | Float type liquid level sensor, pressure type liquid level sensor, capacitive liquid level sensor, ultrasonic liquid level sensor, hydrostatic liquid level sensor |
| Liquid Level Transmitters | Float type liquid level transmitter, hydrostatic liquid level transmitter |
| Liquid Level Gauges | Magnetic flap level gauge, float type liquid level gauge Liquid Level Series |
| Common Purposes | All four types of equipment are instruments used to measure or monitor liquid levels. Their ultimate goal is to obtain liquid level information in containers for controlling, monitoring, or managing production processes. |
|---|---|
| Basic Technology Relevance | The technological development of liquid level sensors provides a foundation for the development of liquid level switches, liquid level transmitters, and liquid level gauges. For example, the principles of some liquid level sensors, such as capacitive and float types, are also applied to liquid level switches and liquid level gauges. Additionally, they may share some electronic circuits, signal processing technologies, etc., to a certain extent. |
| Cooperative Use | In many practical application scenarios, these devices are used in conjunction with each other. For instance, liquid level sensors or liquid level gauges can provide liquid level information to liquid level switches, enabling the switches to perform on-off control when the liquid level reaches a specific value; liquid level transmitters can convert and transmit signals obtained by liquid level sensors for display and control in remote monitoring systems. |
| Category | Functions | Accuracy | Output Form |
|---|---|---|---|
| Liquid Level Switch | Mainly used to detect whether the liquid level reaches a specific position, usually outputting only two states: on/off. When the liquid level reaches the set high or low level, it triggers the switch action and sends a signal to control the start or stop of related equipment. | Relatively low accuracy; generally only able to determine whether the liquid level is within a specific range, not accurately measuring the exact height of the liquid level. | Usually simple switch signals, such as normally open or normally closed contact signals, digital signals (high level/low level), etc. |
| Liquid Level Sensor | Can detect changes in liquid level and convert liquid level information into electrical signals for output. It can continuously measure the liquid level height and provide more detailed liquid level information, but generally does not directly display the liquid level value. | Higher accuracy than liquid level switches; can provide relatively accurate liquid level change information, but may not be as precise as liquid level transmitters and liquid level gauges. | Outputs electrical signals, such as voltage signals, current signals, or digital signals, which can be transmitted to the control system for further processing. |
| Liquid Level Transmitter | Not only can measure the liquid level height, but also convert the liquid level signal into a standard electrical signal output, such as 4-20mA current signal, 0-5V voltage signal, etc. It usually has functions such as signal amplification and linearization processing to ensure the stability and accuracy of the output signal. | High accuracy; can provide accurate liquid level measurement values, suitable for occasions with high requirements for liquid level measurement. | Outputs standard electrical signals, which can be directly connected to various control systems to achieve remote monitoring and control. |
| Liquid Level Gauge | A specialized instrument used to measure and display the height of liquid levels. It can directly read the liquid level value, and some liquid level gauges also have functions such as alarm and recording. | Accuracy varies by type; high-precision liquid level gauges can meet strict measur | Usually has an intuitive display method, such as pointer-type or digital display; some liquid level gauges can also output electrical signals |
