flue gas analyzer low co2 reading is low

[Tad334]

Hello, I hope someone can help. I’ve got Kane 455 FGA, its been serviced and calibrated the problem is that CO2 level is 2.3, 3.5 at most I could get 4.5, instead of 9-11, co co2 ratios are fine 0.0004 0.0009, co are fine as well 17 to 25. Recently I sent it back for recalibration but they dint find anything wrong. Also I tested it on 3 different boilers. Can anyone tell what is going on, I assume I’m doing something wrong. Thanks

 

[lame plumber]

are you testing a nice new HE boiler or an old style bf boiler they are a bit different, re readings.

 

[Tad334]

are you testing a nice new HE boiler or an old style bf boiler they are a bit different, re readings.

ive tested mostly newish boilers, co2 still should be above 9

 

[lame plumber]

ive tested mostly newish boilers, co2 still should be above 9

borrow a mates analyser for comparison checks on same boiler

 

[Tad334]

borrow a mates analyser for comparison checks on same boiler

not that easy, my mate is quite far, thank you for advice anyway

 

[hammers4spanner]

whats ppm??

 

[Tad334]

[DLMURL]https://dl.dropboxusercontent.com/u/33209856/photo1.JPG[/DLMURL]
[DLMURL]https://dl.dropboxusercontent.com/u/33209856/photo2.JPG[/DLMURL]
these are two links

 

[lame plumber]

pop into your local college or assessment centre, theyll probably let you do a comparison.

 

[Tad334]

pop into your local college or assessment centre, theyll probably let you do a comparison.

r u saying that everything is fine?

 

[GrahamM]

What was exact make/model of boiler you tested last?