What allows a level signal to be sent to a controller for electronic monitoring?

Transmitters connected to a float are designed to measure the level of liquid in a tank or container. These transmitters utilize a float that rises and falls with the liquid level. As the float moves, it changes the position of a variable resistor or transforms the position into an electronic signal that is then sent to a controller. This allows for real-time electronic monitoring of liquid levels, helping to maintain operational safety and efficiency.

In contrast, pressure sensors are used to measure the pressure of gases or liquids but do not provide a direct measurement of fluid level unless specifically calibrated for that purpose. Temperature gauges measure the temperature of a substance and are not involved in level measurement. Flow meters measure the rate of flow of liquids or gases but do not indicate the level of liquid in a container. Therefore, transmitters connected to a float are specifically designed for level measurement and are the most appropriate choice for sending level signals to a controller.