[Stoves] Re. Stoves] Oxygen Sensors for all combustion...

[Alex and Christine English]

Dear All, et Tom,
It must be over ten years a go that I discussed this with you and Das.
Back then I ran some experiments with the standard auto sensors and posted the 
results. Over the last six weeks I have managed to adapt the wide band Bosch LSU 
4.2 sensor that comes  with the Innovate Motorsport LM 1 to monitor stack conditions
on the  150 HP chip fired boiler that heats greenhouses that support me. We have it 
set up to feed the data into the boiler plc and control the overfire variable speed fan.

It works.  As long as the conditions just above the fuel are fuel rich the over fire fan will 
chase the excursions (or back off)  and keep the mix optimal for good  combustion.

Has any body found anthing like this coming off the shelf that isn't priced for industry?
They are using something like this in household boilers in Europe. We have spent 
about $500 for parts but with some help from some electronic wizards this could be 
made opensource and, perhaps, even more affordable.

Alex