Detecting Fluid Levels in Tanks with Infrared
Infrared Thermography can be used to verify tank levels. This can generally be done at a distance with makes it a safer than manually checking levels.
Sometimes it is possible to determine any sludge or sediment buildup also. This may not be as easily done as a liquid level indication.
Along with tank inspection drilling rigs are also inspected with infrared, both land based and off shore.