Capacitive Oil Level Sensor Circuit

The level capacitance can be simulated by entering the low and high level values.

Capacitive oil level sensor circuit. This allows us to create a level sensor that is safe for use with any liquid this one will be used in a buggy with gasoline petrol. Designed and developed to measure oil level reliably in extreme operating conditions. Thus the level of the liquid can be calculated as c 1 c 2. The capacitor s ability to store this energy a measurement known as capacitance increases as the voltage is applied to the circuit and as the volume of insulating material increases.

Since εr water εr air the capacitance of the sensor can be approximated by the capacitance of the submerged section. When the tube is empty the space is occupied by air. All products are manufactured to suit the intended application whether using one of our standard designs manufactured to length or a fully bespoke sensor designed specifically for the application. Each oil level sensor is manufactured to the required mechanical specification.

How it works and how to make a capacitive water or fluid level sensor for your fish tank water collection oil or fuel tanks cutting oil in machine tools. The space between the tubes is the dielectric. When the tube starts to fill more and more of the space will be occupied by water. Figure capacitance level sensor calibration.

Capacitance units will calculate automatically the capacitance variation image based in the factory calibration for a conductivity 100 μs cm. The capacitive level sensor has the 2 conducting plates in the form of 2 electrically isolated aluminium tubes a smaller tube in a larger tube. The capacitance level sensor produces a dc current signal proportional to fluid level when excited with 20 vac at 30 khz. A second pair of capacitive sensors shown as c 2 is used as a reference.

International association of oil gas. Capacitive oil level sensors reventec oil level sensors use capacitive technology to measure oil level accurately. Two concentric aluminum tubes along the length of the sensor form a variable capacitance circuit. A capacitive liquid sponsor relies on the fact the the capacitance or charge between 2 metal plates will change in this case increase depending on what material is between them.

The tube electrodes are isolated from each other using a molded rytontm insulator. In the most basic sense capacitors store electrostatic energy in an electric field. Proven in motorsport defence and industrial applications the sensors are solid state with no moving parts. When functioning as level sensors capacitors work by processing capacitance with reference to the dielectric.

Level is the length submerged into liquid.