Gas sampling analyzing system

A gas sampling analyzing system for analyzing gasses within a duct comprising:

• probe means, mountable within the duct, to draw a sample of the gasses therein;
• an analyzer assembly mounted outside of the duct and being connected to said probe means to analyze said sample including a gas analyzer for providing an electrical signal in response to said sample being applied thereto and a drop tube connected in parallel with said gas analyzer to bypass a portion of said sample from said gas analyzer to thereby increase the flow through said probe means;
• an exhaust line connected to said analyzer assembly for exhausting the analyzed gas from said analyzer assembly back to the duct;
• and
• means mounted externally of the duct for inducing a substantially constant flow of sample gas from the duct to said probe means to said analyzer

A gas sampling analyzing system for analyzing gasses within a duct comprising:

• probe means, mountable within the duct, to draw a sample of the gasses therein;
• an analyzer assembly mounted outside of the duct and being connected to said probe means to analyze said sample;
• an exhaust line connected to said analyzer assembly for exhausting the analyzed gas from said analyzer assembly back to the duct;
• means mounted externally of the duct for inducing a substantially constant flow of sample gas from the duct to said probe means to said analyzer assembly and through said exhaust line back to the duct;
• manifold means for encasing said analyzer assembly and said inducing means;
• and
• heating means mounted within said manifold means for maintaining said analyzer assembly and said inducing means as a temperature above the

A gas sampling analyzing system for analyzing the composition of flue exhaust gasses comprising:

• a sample probe sealably mounted in the flue for drawing exhaust gasses therefrom;
• an electrochemical cell connected to said sample probe for analyzing exhaust gasses and establishing an electrical signal in response to a particular concentration of exhaust gasses;
• an aspirator having an inlet connected to said electrochemical cell to induce the flow of exhaust gasses from said sample probe to said electrochemical cell and having an outlet connected to the flue to exhaust the exhaust gasses from said electrochemical cell back to the flue in response to the flow of supply air through said aspirator;
• and
• an air supply connected to said aspirator to provide a flow of supply air