In the paper you can get explanation such as oxygen sensors, the volume fraction, oxygen, and pressure. There are many explanation related to range, oxygen sensor, and intensity are explained inside this paper.
This paper presents information about accuracy, luminescence intensity, nitrogen, and density. The following are some excerpt from the paper:
Microwave driven hydrothermal synthesis and hydrothermal synthesis were used to obtain ZrO2 nanopowders. Their production with varying phase composition, the characterisation and selected optical properties concerning their potential use as luminescence oxygen sensors are reported. It was found that the powders obtained by the microwave driven hydrothermal method and annealed at 750 0C in air show experiment repeatability within an accuracy of 6 %. Introduction Oxygen, which first appeared in significant quantities on Earth during the Paleoproterozoic era (between 2.5 and 1.6 billion years ago) as a product of the metabolic action of early anaerobes (archaea and bacteria) , is the most important gas in the environment.
In addition, this paper gives us discussion such as sensors, laser excitation, and method.