Patent ID: 8459097
Filing Date: 2013-06-11
Classification: G01N

Abstract:
1. A method for detecting a gas concentration of a gas from a gas mixture using a plurality of gas detectors which are sensitive to the gas or using one gas detector which is sensitive to the gas in different operating states, the method comprising: providing the gas detector, the gas detector having a first operating temperature; supplying the gas mixture to the gas detector, a gas concentration of the gas from the gas mixture being measured by the gas detector at the first operating temperature, and generating a first signal, which is characteristic of the measured gas concentration; changing an operating temperature of the gas detector to a second operating temperature, which is higher than the first operating temperature, or providing an additional gas detector, the additional gas detector having the second operating temperature; feeding the gas mixture to the gas detector or the additional gas detector, a gas concentration of the gas from the gas mixture being measured by the gas detector or the additional gas detector at the second operating temperature, and generating a second signal, which is characteristic of the measured gas concentration; and determining a gas concentration of the gas from the gas mixture using a first concentration value allocated to the first signal and a second concentration value allocated to the second signal, wherein the first concentration value is output as a value for the gas concentration when the first concentration value is lower than a predefined upper concentration threshold value and the second concentration value is output when the second concentration value is higher than a predefined lower concentration threshold value, the predefined upper concentration threshold value being higher than the predefined lower concentration threshold value.