Device for measuring the thermal conductivity of gas components of a gas mixture
AssigneeChemec Oy AB
InventorEckard BRANDAU
Life of this patent
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Abstract
A device for measuring thermal conductivity of gas components of a gas mixture in order to determine fractions of the gas components includes a plurality of thermal conductivity sensors, each thermal conductivity sensor being a component of a resistance bridge circuit and being connected to an evaluation unit associated with the device. Each thermal conductivity sensor has a heating element and an integrated temperature measuring element, which elements generate two measuring voltages (UM3, UM2) when the temperature of the thermal conductivity sensor Changes as a result of heat dissipation by the gas mixture. Voltages are compared in the evaluation unit in order to detect measuring errors.
Claims6
A device for measuring the thermal conductivity of gas components of a gas mixture in order to determine fractions of the gas components, the device comprising:
- a plurality of thermal conductivity sensors, each of the thermal conductivity sensors being a component of a resistance bridge circuit and being connected to an evaluation unit associated with the device,
- wherein each of the thermal conductivity sensors has a heating element and an integrated temperature measuring element, which elements generate two measuring voltages when the temperature of the thermal conductivity sensor changes as a result of heat dissipation by the gas mixture, and
- wherein voltages are compared in the evaluation unit in order to detect measuring errors.
Dependencies are inferred from the claim text.