Oxygen sensor for Diesel Heaters

[capefearboat]

ABYC requires an ambient oxygen sensor for diesel heaters that use room air for combustion. Does anyone know how to retrofit stoves or stoves that have this option?

[safewalrus]

Stand alone battery CO2 indicator is as good (one tells you if theres no oxygen the other if theres too much CO2 either way you die if you stay there - this is not a good thing to happen)! If it's a Insurance requirement then you may have to go for the Oxygen sensor but if they make standalone CO2 sensors I'm pretty sure they'll produce the other! Finnding it is all!

[marshmat]

Somehow I doubt that tweaking a car's O2 sensor would work?......
If it's an ABYC requirement, someone somewhere must make the thing. Google turn up nothing for you?

[capefearboat]

I have located portable sensors for oxygen ($300) but the ABYC requires one that turns off the fuel.
I got an email from the heater manufacturer that said that if room oxygen became depleted the heater would go out. I think I remember that if one puts a candle in a sealed jar it will go out at 2% CO2 and 19% oxygen. I think 2% CO2 will make your hyperventilate and or pass out.
Someone at ABYC told me that he might be right but why not provide a sensor for added insurance. Google isn't much help. Somebody makes a diesel heater that has a cut off, but who?

[safewalrus]

Or buy some wool and get knitting!

[solrac]

search for "explosimeter" at google, there are about 19000 entries. for "gas detector, about 14:000.000

the O2 sensor is the same device, it just senses (& measures) O2 in %, as also explosivity (gas concentration in air) as a %LEL (Lower explosivity Level)
other more sophisticated models also measure H2S.
another alternative, I've seen used by Gas Industries on LPG compressors the use of devices called "snifers", a kind of electronic device, based on a wheatstone bridge circuit, and some basic op amp circuitry to drive an electro-valve for extinguisher system activation

a simple explanation on what is it:
http://en.wikipedia.org/wiki/Explosimeter

two well known world class providers I've worked with:
http://www.msanorthamerica.com/catalog/product1084.html
http://www.omniinstruments.co.uk/gas...losimeters.htm

[Wellydeckhand]

look into Dradger of German gas detector, one of the best in the market