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US 7,704,748 B2Granted
Gas analyzer for measuring the flammability of mixtures of combustible gases and oxygen
AssigneeControl Instruments Corp.
InventorsChristopher G. Schaeffer, Matthew James Schaeffer, Pravin Patel
Life of this patent
Estimating the term…
Abstract
A novel Flame Temperature Analyzer (FTA) method and apparatus for measuring combustible gas concentration and oxygen content in a sample gas includes supplying a mixture of oxidant and fuel to a sensing flame and measuring the temperature of the flame as the sample is added to the combustion chamber.
Claims14
A gas analyzing method, comprising:
- a) filling a flame cell with a sample gas;
- b) injecting a mixture into said flame cell,
- said mixture including a fuel and an oxidant present in proportions such that burning said mixture creates a diffusion flame comprising an inner ignition zone and a main reaction zone;
- c) measuring a temperature of said diffusion flame;
- and
- d) calculating a concentration of combustible gases contained in said sample of gas using said temperature.
3 more elements
A gas analyzing apparatus, comprising:
- a flame cell;
- a filling means for filling said flame cell with a gas sample;
- a flammable mixture, said mixture including a fuel and an oxidant;
- an injection means for injecting said mixture into said flame cell;
- a burning means for burning said mixture inside said gas sample filled flame cell, thereby creating a diffusion flame including a main reaction zone wherein said gas sample diffuses into said diffusion flame and an inner ignition zone free of said gas sample;
- a measuring means for measuring a temperature of said diffusion flame;
- and
- a combustible gas concentration calculating means, operatively connected to said measuring means and capable of using said temperature for determining a concentration of combustible gases in said gas sample.
5 more elements
A gas analyzing device, comprising:
- a flame cell filled with a gas sample;
- a burner tube having a first and a second end, said first end being located inside said gas filled flame cell, and said burner tube being supplied via said second end with a mixture including a fuel and an oxidant;
- a diffusion flame created inside said flame cell by burning said mixture at said first end of said burner within said gas sample filled flame cell, said diffusion flame having a main reaction zone wherein said gas sample diffuses into said diffusion flame and an inner ignition zone free of said gas sample;
- a temperature sensor located near said diffusion flame capable of providing a temperature of said diffusion flame,
- a calculator, operatively connected to said temperature sensor, and capable of using said temperature to determine a concentration of combustible gases contained in said sample.
2 more elements
Dependencies are inferred from the claim text.