Abstract: A method for monitoring a combustion process in the infrared wavelength range includes using a laser, which transmits a laser light beam along a measurement path in a certain wavelength range, which is selected in such a way that a gas therein to be detected in the combustion process has an absorption line, and that the emission wavelength of the laser detects the absorption line of the gas to be detected upon the tuning in the selected wavelength range. The concentration of the gas is determined as a function of the absorbed energy of the laser light beam. The intensity of the laser light beam is detected and is analyzed in order to determine the existence of a flame in the combustion process, and/or the quality of the flame.

Abstract: The invention relates to a control system (15) for a burner and a setting-up procedure. The control system (15) controls the air ratio for combustion using the ionisation electrode (16). For calibration, a change is carried out in a first parameter, and the subsequent change in a second parameter is observed. Accurate expected values for the change observed come from stored characteristic data that have been determined in the setting-up procedure, and from taking into account the current combustive content of air and fuel. This allows corrective measures or fault signals to be established.

Abstract: A burner controller (15) regulates the air index, with a combustion sensor. In accordance with the invention the reference value of the sensor signal is determined not only with the current burner power output but also on the basis of a measure for the current fuel energy content.

Abstract: The invention relates to a control system (15) for a burner and a setting-up procedure. The control system (15) controls the air ratio for combustion using the ionisation electrode (16). For calibration, a change is carried out in a first parameter, and the subsequent change in a second parameter is observed. Accurate expected values for the change observed come from stored characteristic data that have been determined in the setting-up procedure, and from taking into account the current combustive content of air and fuel. This allows corrective measures or fault signals to be established.

Abstract: A flame measuring device, in particular for use in a regulating device for a burner, includes an ionization electrode which is arranged in a flame region of the burner. An ac voltage is applied to the ionization electrode whereby a dc voltage component is superimposed on an ionization current that flows through a resistor connected to the ionization electrode. The flame region influences the ac voltage and the dc voltage at a blocking capacitor unequally, and allows an ac voltage component to be separated from the dc voltage component by way of a first means. The separated ac voltage component can be compared to a separated-off dc voltage component by way of a second means in order to produce a pulse width-modulated signal.

Abstract: A regulating device for a burner regulates the air-gas ratio by way of an ionization electrode. In the event of dynamic changes in output preliminary control is implemented in accordance with the invention with two or more stored characteristics.

Abstract: During start-up a regulating device monitors the quality of the air ratio control in respect of time in accordance with the invention in that it observes the difference of a signal and comparison signal.

Abstract: During start-up a regulating device monitors the quality of the air ratio control in respect of time in accordance with the invention in that it observes the difference of a signal and comparison signal.

Abstract: The present invention describes a measuring device for a flame, in particular for use in a regulating device for a burner (13), comprising an ionization electrode (15) which is arranged in the flame region (14) of the burner (13) and to which an ac voltage is applied whereby a dc voltage component is superimposed in dependence on the ionization current.

Abstract: A regulating device (15) for a burner regulates the air-gas ratio by way of an ionization electrode (16). In the event of dynamic changes in output preliminary control is implemented in accordance with the invention with two or more stored characteristics.