Patent ID: 8191418
Filing Date: 2012-06-05
Classification: G01F

Abstract:
1. A method for determining and/or monitoring aggregate state changes on a thermal, flow measuring device of at least a first part of a measured medium, comprising the steps of: ascertaining at least one phase boundary line, at least of the first part of the medium, by means of temperature of the medium being measured, by means of chemical composition of the medium being measured and by means of the partial pressure at least of the first part of the medium being measured and/or by means of the total pressure of the medium being measured; providing at least a first measurement signal from a temperature difference between a first temperature sensor and a second temperature sensor of the thermal flow measuring device and/or from a heating power supplied the medium being measured; and in the case of a state, at least of the first part of the medium being measured, in a region of the phase boundary line of the first part of the medium being measured, disturbances of predetermined type in the measurement signal are recognized as aggregate state changes on the thermal flow device at least of the first part of the medium being measured.