A gas measuring system includes a measuring element being in contact with a gas and a heating element producing heat, a measuring unit measuring a value for an electric signal from the temperature measuring element and a value for an electric signal from t...

There is provided a gas detector capable of detecting hydrogen concentration and humidity independently in the environment containing both hydrogen and water vapor. The gas detector comprises a high-temp exothermic detector unit (35a) and a low-temp exothe...

The gas sensor passes at least three levels of current through the heater element, stepwise and continuously for a predetermined time. The calculator loads voltages across the heater element for respective current values after a predetermined elapsed time,...