Liquid level sensor emphasizes liquid level signal detection. For example: the float in a float-type liquid level transmitter is the so-called "liquid level sensor". Its function is to float with the liquid level, and the up and down distance of the float is used to indicate the liquid level.
Liquid level transmitter emphasizes "change" and "send". For example, when the float moves up and down with the liquid level, an electrical signal of position is generated in a metal pipe. This process is called "change". However, this electrical signal is often not standardized in size and cannot even be used for future circuits. For this reason, a circuit is installed near the pipe to convert this non-standard electrical signal into a standardized electrical signal (such as 4-20MA, 0-10V, etc.), which can be output to other instruments or devices for display. or control. This device is called a "liquid level transmitter".
The liquid level signal is the same as the liquid level sensor.
Liquid level switch: used to control the liquid level switch. Many liquid level switches include liquid level sensors/liquid level transmitters.
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