Sandia National Laboratories has developed a continuously monitoring fluid interface optical sensor.The method of determining the liquid level through a single immersed optical wave guide allows for a simple and mobile solution to fluid monitoring systems.Current technologies use monitored floating devices and require mechanical or magnetic coupling, which can pose problems for mobility and hazardous fluids.Current technologies employ a non-contact method for sensing transparency of liquid which lack the precision and safety of a single optical waveguide method.
The fiber optic technology of this Sandia inventions utilizes the principle of dual-fluorescence, where a primary and secondary fiber are used to compare emitted to absorbed light in the system and calculate the position of the interface between opaque and clear fluids.
- Mobile and simplistic
- No moving parts
- Continuous monitoring
- Safe for use with flammable or hazardous liquid
- Can operate over a wide range of wavelengths
- Response wave shape can be adjusted to provide more controlled measurements
Applications and Industries
- Measurements of hazardous materials or contaminations
- Crude oil levels
- Wastewater treatment
US Patent# 7,049,622Published