Abstract: A method is disclosed for monitoring an oil and gas lubricating device, with which an oil film, while forming striae, can be conveyed by an airflow along a wall of a supply line to a lubrication point, in which the temporal change in the striae is detected by a striae sensor, and a striae signal that is representative of the temporal change in the striae is generated. In order to further develop known methods for monitoring an oil and gas lubricating device, thereby preventing faults during the evaluation of the striae signal, the striae signal is smoothened by calculating an average value of the striae signal over a predetermined averaging interval.

Abstract: The invention relates to a method for monitoring an oil and gas lubricating device (1), with which an oil film, while forming striae, can be conveyed by an airflow along a wall of a supply line (4) to a lubrication point (2), in which the temporal change in the striae (12) is detected by a striae sensor (14), and a striae signal that is representative of the temporal change in the striae (12) is generated. In order to further develop prior art methods for monitoring an oil and gas lubricating device (1) whereby preventing faults during the evaluation of the striae signal, the striae signal is smoothened by calculating an average value of the striae signal over a predetermined averaging interval.

Abstract: A method and apparatus to automatically monitor a lubricant supply of a unit lubricated according to the principle of oil and air lubrication. The method and apparatus detect oil streaks traveling on the wall of the lubricant line by using a capacitive or opto-electronic control. The method and apparatus further utilize signals that depend on wave movements of these streaks for control purposes.