[Stoves] New gas analyser under $500

Wed Dec 17 10:50:31 CST 2014

Dear Developers 

There is a new portable oxygen monitor from Omega
http://www.omega.com/Green/pdf/HHAQ-104.pdf that appears to be able to
record logged data automatically. I did not have time to talk to them about
logging onto a computer but it has capacity for 32,000 data points on board
which indicates it can log internally.

It only measures O2 and humidity but that is a good start if you have no
instrumentation at all. IT has a temperature sensor but that is only for the
gas sample - you would still need a thermometer for stack temperature if
that was your area of work. It has altitude compensation.

The link in their new product newsletter is:

http://www.omega.com/pptst/HHAQ-104.html?utm_medium=email
<http://www.omega.com/pptst/HHAQ-104.html?utm_medium=email&utm_source=D1214&
utm_source=OMEGA+Engineering+Newsletter&utm_campaign=4bc8640bef-D1214&utm_me
dium=email&utm_term=0_8f0f6139e6-4bc8640bef-197102433>
&utm_source=D1214&utm_source=OMEGA+Engineering+Newsletter&utm_campaign=4bc86
40bef-D1214&utm_medium=email&utm_term=0_8f0f6139e6-4bc8640bef-197102433 

For the experimenter the main use of the O2 reading is to find out at what
excess air level the performance is best, or what it is at certain stove
settings. For very clean stoves, the 'eye test' and the smell test are
useful for determining if the emissions are very low. The Eye Test is
allowing the output ('smoke') to make contact with your eye. If you can't
feel anything it is pretty clean. 

If you want to measure, at least roughly, the PM concentration, take a 2
photos on a relatively dark room. The PM will reflect a haze of white light
when the flash is used. Combining that with the O2 value can give you a
general value of the undiluted concentration.

Regards

Crispin

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