Faq BOSTON flue gas analyzer

What % of O2 do we find during the analysis?
2-5% for proof boilers, until 14% for atmospheric boilers, oxygen in atmosphere is about 20,9% .
What % of CO do we find during the analysis?
The lowest, however not higher than 1000 ppm not diluted. In air, 0 ppm.
What % of CO2 do we find during the analysis?
10-11% (it depends on the O2 and on the combustible)
How the “flue-gas temperature” probe will be used?
With atmospheric boilers it is measured the local room temperature were the boiler is installed. (Inlet air). With proof room boilers the probe has to be placed into the suction pipe by the threaded cone.
What does “draught” mean?
It indicates the chimney suction value.
What is the ideal rendering?
The Italian law n. 10 (Norma UNI 10389) expresses the formula for the calculation.For Example: Boiler of 30.000Kcal installed after the 1993 the rendering will be: to 70°C higher-equal 89%, to 50° C higher-equal 87% (see rendering table).
What is the Bacharach Test?
It is the flue gas opacity determination measuredwith Bacharac probe.
What is Lambda?
It is the air excess present in the flue gases.
What are the Losses?
It is the difference between the ideal rendering (100%) and the real rendering. Example: if rendering is 86%, then loss is 14%.
What is NO?
It is one of the toxic gas present in theCombustion flue gases: “Nitric Oxide”.
What is NO2?
It is one of the toxic gas present combustion flue gases: “Nitrogen Dioxide”.
What are NOX?
They are the total nitric oxide, that is the amount of NO and NO2.
What is SO2?
It is one of the toxic gas present in the combustionFlue gases: “ Sulphurs Dioxide”. It represents the index of sulphur presence in the combustible.
What is the dew point?
It is the temperature that condensate the humidity contained in the gas.
What is the O2 (Oxygen) reference?
It is the data according to the Italian regional normative for the calculation of the dry CO (without water vapour).