Gas analyser for a gas mixture with three or more components, having - a channel guiding the gas mixture, - a thermal element probe with a measuring point in the interior of the channel and a reference junction in thermal contact with the wall of the channel, - a control facility, which is embodied for the pulse-shaped activation of the thermal element probe with current pulses (8, 8', 8"), - a measuring facility, which is embodied to measure the voltage at the reference junction of the thermal element probe in the pauses between the current pulses (8, 8', 8"), and - an evaluation facility, which is embodied to determine the temperature difference between the measuring point and the reference junction from the measured voltage and to calculate the ratio of the components in the gas mixture from temperature difference values (TD1', TD2', TD1", TD2") determined at at least two different points in time (t1, t2) in each pause, characterised in that the control facility is further embodied to generate current pulses (8', 8") with at least two different energy contents, and that the evaluation facility is further embodied, either - to define the points in time (t1, t2) for determining the temperature difference values (TD1', TD2' TD1", TD2") at predetermined intervals at the end of the current pulse (8', 8") which precedes in each instance and thus in the pause after a current pulse (8") with a larger energy content at the first point in time to detect a higher temperature difference value (TD1"), and use same for the calculation, than after a current pulse with a smaller energy content, or - to determine the points in time at which the temperature difference reaches at least two different predetermined temperature difference values (TD1', TD2', TD1", TD2") and to use the distances between the determined points in time (t1', t2', t1", t2") at the end of the respectively preceding current pulse (8', 8") in order to calculate the ratio of the components in the gas mixture. - a channel guiding the gas mixture, - a thermal element probe with a measuring point in the interior of the channel and a reference junction in thermal contact with the wall of the channel, - a control facility, which is embodied for the pulse-shaped activation of the thermal element probe with current pulses (8, 8', 8"), - a measuring facility, which is embodied to measure the voltage at the reference junction of the thermal element probe in the pauses between the current pulses (8, 8', 8"), and - an evaluation facility, which is embodied to determine the temperature difference between the measuring point and the reference junction from the measured voltage and to calculate the ratio of the components in the gas mixture from temperature difference values (TD1', TD2', TD1", TD2") determined at at least two different points in time (t1, t2) in each pause, characterised in that the control facility is further embodied to generate current pulses (8', 8") with at least two different energy contents, and - to define the points in time (t1, t2) for determining the temperature difference values (TD1', TD2' TD1", TD2") at predetermined intervals at the end of the current pulse (8', 8") which precedes in each instance and thus in the pause after a current pulse (8") with a larger energy content at the first point in time to detect a higher temperature difference value (TD1"), and use same for the calculation, than after a current pulse with a smaller energy content, or - to determine the points in time at which the temperature difference reaches at least two different predetermined temperature difference values (TD1', TD2', TD1", TD2") and to use the distances between the determined points in time (t1', t2', t1", t2") at the end of the respectively preceding current pulse (8', 8") in order to calculate the ratio of the components in the gas mixture.