Found a oxygen sensor with some interesting specs. Even though if this one isnt cut for the job its still an intersting
technology.
From their site:
"The SMSI® Oxygen Sensor, pictured on this page, is a miniature solid-state transducer that uses fluorescence to measure oxygen partial pressure. An LED excitation source and fluorescence detector are both integrated into the device. Key features of the SMSI® Oxygen Sensor include:
Accurate - ±1% of reading (i.e. ±0.2% percentage oxygen in air) using simple, inexpensive drive and detection circuitry.
Fast Response Time - As low as 20 ms response times.
Low Power Consumption - As low as 5 mW at 100% duty cycle.
Highly Specific - Strong response to O2, insensitive to common atmospheric and medical gases.
Long Lifetime - Up to several years for many applications.
Small Size - Just over ¼ inch maximum dimension."
Url:
Oxygen Sensor