I would like to install an oxygensensor in the engineroom of a boat. this room is closed, so it would be nice to see if its actually enough oxygen there. Now there is the question what kind of sensor I should use: http://playground.arduino.cc/Main/MQGasSensors
my first guess is to use MQ2 sensor for"flamable and combustible gasses." (what is the effect of the heater on flamable gases?)
but actually it is the amount of oxygen in the air, I am interested in. so what is the best sensor for this ? MQ135 can detect "air quality"(what does this mean?)
here i found a lot of different oxygen sensors: http://www.apollo-sensors.com/s04/apollo-sensors/yjml/20080923/2183375/3.html
and O2S-XX-T3( http://www.mcsensors.com/PDF/O2S-XX-T3%E8%BF%B7%E4%BD%A0%E5%9E%8B%E6%8E%A2%E5%A4%B4.pdf ) looks nice and operates at 4,5V. but the internal temperature is 700°C. what if there is a fuelleakage? :sweat_smile:
and here is one sensor, which operates without heater and only at roomtemp!(not really useful). and it costs 70bugs!(way to much) http://www.aliexpress.com/store/product/The-FIGARO-oxygen-sensor-KE-25-KE-50-KE-25F3-Original-and-Stock/614934_656857962.html
what do you think, any suggestion?:) thank you!