DEVICE FOR MEASURING THE THERMAL CONDUCTIVITY OF GAS COMPONENTS OF A GAS MIXTURE

摘要

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.

主权项

1. 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.