What is Fluorescence?
Fluorescence is the absorption of light at one wave length, which is changed to another wavelength.
Defined in the book Quantitative Chemical Analysis:
The process in which a molecule emits a photon 10-8 to 10-4 s after absorbing a photon. It results from a transition between states of the same spin multipicity.
Quantitative Chemical Analysis - cover, page 562 and page 563** Harris, Daniel C. "Quantitative Chemical Analysis" New York: W. H. Freeman and Company, 1999
How does it measure oxygen?
The oxygen present in the silicone rubber sensor as a result of the oxygen from the water it is in, forces the patented sensor elements to glow orange/red when sensor is exposed to a blue light. (see photograph at the bottom)
Features, Benefits & Advantages Are there any advantages to using our optical method for the measurement of oxygen over the existing methods such as Galvanic and Clark probes?
Indeed there are. The following is a list of some of the major advantages.
1. Our sensor does not consume oxygen and is in a state of non-dynamic equilibrium, therefore, it does not require flow across the sensor in order to function. It is a requirement for the Clark and Galvanic probes that flow be present.
2. Our sensor does not require external air compressors, mechanical wipers, chlorine gas, or voodoo in order to operate. When coated with grease, slime, or any other substance, it works because it is in equilibrium with the oxygen in the water in a non-dynamic relationship.
3. Our sensor does not require maintenance such as re-filling of electrolyte, changing membranes or other nasty, time-consuming tasks.
4. Our sensor should last for years, as long as the environment surrounding it is compatible with silicone rubber.
5. Our sensor does not get consumed or foul. Fouling, which is catastrophic for Galvanic and Clark probes and usually means total replacement of the probe. However, this does not affect our sensor whatsoever. 6. If our sensor has to be replaced at all, it will only be a very small part of the probe and can easily be replaced with a small screwdriver or a locking blade pocket knife. This cannot be said for the other probes mentioned above. 7. Our sensor, due to the advantages mentioned above, does not have the calibration or drift problem as the Galvanic or Clark probes do. 8. Clark and Galvanic based probes sensitivity and resolution set better as the oxygen increases. Our probe behaves in the opposite manner, working best below 8ppm.
The Glow of the Revolutionary Sensor
