Tank float level sensor
C series Madison Company

Madison's continuous level indicators are vertical mount sensors ideal for monitoring liquid height. These sensors provide tank level indication and control through the available resistive, current or voltage outputs. Connect the sensor output to a process meter to control pumps, valves, alarms or other devices. These magnet float and reed switch based sensors are rugged, reliable and available in a wide variety of configurations. They are available in various materials, mounting configurations, resolutions and output types. Standard models are customizable using our product configurator or contact Madison for your custom sensor needs.
Theory of operation:

A magnet-containing float travels the length of the sensing range and interacts with a reed switch/resistor network. The reed switch/resistor network consists of evenly distributed reed switches over the sensing length and corresponding resistors to achieve the desired output resolution. Reed switches magnetically actuate as the float moves with the liquid level. Apply DC power and connect the output signal to process meters, programmable controllers, microprocessors or other readout devices.
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