Using a thimble shaped zirconia ceramic coated on both sides with a thin platinum layer the original sensing element was made. It is available in heated as well as unheated forms.

The ceramic sensing element mass as well as within the ceramic structure were significantly reduced in 1998, when markets started displayed the planar-style sensor incorporating the heater. As a result a sensor was developed that started sooner and gave fast response.

The most common application of these sensors is measurement of the exhaust gas concentration of oxygen and was effectively used for internal combustion engines in automobiles and other vehicles. Deep sea divers also use a similar kind of device in order to measure the partial pressure of oxygen in their breathing gas.

Scientists also use oxygen sensors in their laboratories in order to measure respiration or production of oxygen. Oxygen sensors is also used by oxygen analyzers and its application is found in various fields such as in medical field they are used in anesthesia monitors, respirators and oxygen concentrators.

There are many different ways such as electrochemical, infrared, zirconia, ultrasonic and very recently laser methods that are used commonly for measuring oxygen. Each method has its own pros and cons.

Thus the importance of oxygen sensor is tremendous and one can have a choice of product that suits his requirements.

If you would like to know more about o2 sensors and co2 sensor please visit the website http://www.sstsensing.com.