New Low Cost Smart Optical Oxygen Sensor for DO Measurement

In the past decade the requirements on many measurements are growing due to the need for optimisation of the development and production, or the legislation due to legal documentation. Since the oxygen concentration is one of the most important parameters in many chemical and biochemical reactions, the sensor industry is implementing new ways to measure O2.

The principle of fluorescence quenching also known as “optical oxygen measurement” has many advantages compared to the classical methods – no oxygen consumption, no need for electrolytes, great long term stability, no cross sensitivity to CO2, H2S and no influence by the flow of the media. A serious disadvantage of the optical O2 sensors as a relatively new technology, is the price. However now with the price under 1000 EUR, low maintenance cost and ease of use, many laboratories and field environmentalists are going “optical” with the getOtwo LAB L3209 WA from GetAMO (Bulgaria). With its 12 mm POM shaft it is directly usable in the fixtures of the electrochemical sensor. The USB interface (no transmitter needed) and user friendly PC software are an easy way to log and evaluate data in both mobile and stationed labs.