The measuring range of the proposed sensor depends
on several factors, such as the optical power emitted by
the LED, the minimum detectable optical power of the
photodetector, the length of the POF (due to the optical
attenuation) and the number and depth of the grooves.
The resolution is related with the distance between the
produced grooves and can be improved by decreasing this
distance, which may require the compensation for the
reduction of optical power if a larger measurement range
is required. This compensation may be accomplished by
increasing the power of the optical source or by reducing
the depth of the grooves. In any case, the properties of
the sensor may be tailored to the application requirements.
Monitoring liquids level in medium to large containers
on highly flammable environments, wherever the use of