The Ratiometric level sensor uses a voltage signal to represent the level . 

This voltage signal is proportional to the supply voltage, therefore the output is a percentage of the supply voltage. 

This type of level sensor is ideal for Raspberry Pi , Arduino and Embedded systems.

View the Ratiometric pressure sensor Article post for examples and further information on Ratiometric output.

Therefore integration is simplified by avoiding complex analogue circuitry.

Ratiometric Level sensor Output Example

for example a Ratiometric pressure sensor with a range of 0-10Bar and the supply

Ratiometric output if supply voltage is 5V

0Bar = 0.5V = 10%

10Bar=4.5V =90%

Ratiometric output if Supply voltage is 3V

0 Bar = 0.3V = 10%

10Bar = 2.7V=90%

Level Range

• 0-30mWG

Ratiometric Level transducer overview