Calorimeter Measurement Principle (Residual Oxygen Measurement)
The COSA 9610™ Wobbe Index Meter's measuring principle is based on the analysis of the oxygen content in the flue gas after combustion of the sample. A continuous gas sample is mixed with dry air at a precisely maintained constant ration, which depends on the BTU range of the gas to be measured. The fuel air mixture is oxidized in a combustion furnace in the presence of a catalyst at 800’C, and the oxygen concentration of the combusted sample is measured by a zirconia oxide cell. The residual oxygen provides an accurate measurement for the Combustion Air Requirement (CARI) of the sample gas, which can be correlated accurately to the Wobbe Index of the gas.
Advantages
Key advantages of this method are its insensitivity to changes in ambient temperature, a very fast response with the ability to measure gases with BTU values down to zero and the measurement of the Combustion Air Requirement Index besides Wobbe Index and Heating Value
Feature:
High Accuracy
Fast Response
Large Measurement Range
Measures Low BTU Gases
Low Maintenance
Flameless / No Flameouts
Measures Wobbe and CARI
IECEX , GOST, FM + CSA & ATEX Certifications Available
EPA 40CFR63.670(j) Compliant
Direct Measurement Method ( ASTM D-4891 Compliant )
Gross or Net Heating Values
Application:
Turbine Control
Flare Stack Control
Fuel Optimization
Gas Blending
Custody Transfer
Hyco Plant Control
Hydrogen Applications
Air Blending Applications