Fuel Level Sensor

WORKING PRINCIPLE

The optical liquid level switch uses the principle of total reflection in a prism. Reflection or penetration, is the basis of the level alarm output. When the sensor is surrounded by air, the angle of incidence is greater than the critical angle and thus total refection occurs. Totally reflected light will be transmitted to the receiver. When the sensor is surrounded by liquid, due to the refractive index of the liquid and the sensor tip material, almost all light will penetrate the front of the sensor. Using this principle, the optical liquid level switch design is based on light, The receiver can detect and determine a light reflected or penetrated state, and determines the circuit output.

Application

Optical level sensors offer several advantages for fuel tank level detection, making them a reliable and efficient choice in various applications. Here’s a structured overview of their key benefits:

1. No Moving Parts:

– Eliminates mechanical components like floats, minimizing wear, maintenance, and the risk of mechanical failure. This enhances long-term reliability.

2. 2. High Accuracy and Precision:

– Detects minute changes in fuel levels using light refraction/reflection principles, providing precise and repeatable measurements, even in small tanks.

3. 3. Safety in Hazardous Environments:

– Intrinsically safe design with no electrical sparks, ideal for flammable environments.

4. 4. Compatibility with Diverse Fuels:

– Works effectively with various fuels (diesel, gasoline, biofuels) and chemicals, unaffected by electrical properties, viscosity, or density changes.

5. 5. Environmental Resistance:

– Constructed from materials resistant to corrosion, temperature fluctuations, and pressure changes, ensuring durability in harsh conditions