| 摘要 |
In order to determine the through put of a fluid flow in a pipe with a minimum of technical and particularly equipment expense, the invention proposes a method and a device for determining the throughput of a fluid flow, wherein the method provides for the fluid to be heated by means of an optical heating beam and for the heating site to be irradiated by an optical detection beam, wherein the optical axes of the heating and detection beams correspond at least at the heating site, and the detection beam is recorded by a detector array; and the device is designed such that the unit for heating an inner region of an adjacent inner region of the fluid and an optical arrangement guiding the beam of the laser are disposed such that a measurement beam passes through the heated region at the absolute location of the heating thereof. |
