PROBE FOR MEASURING THE SPEED OR RATE OF FLOW OF A FLOWING MEDIUM, IN PARTICULAR FOR AIR VOLUME MEASUREMENT, AND PRESSURE CELL IN PARTICULAR FOR USE WITH SUCH A PROBE

摘要

A probe for measuring the speed or rate of flow of a flowing medium consists of an elongated probe body perpendicular or transversely oriented to the direction of flow and that extends into a chamber through which flows the medium. At its free end, the probe body has a first measurement opening that opens into a first channel and lies in a plane perpendicular to the probe for measuring the static pressure of the flow, as well as a second measurement opening for measuring dynamic pressure that opens into a second channel separate from the first channel. The probe is preferably connected with its two channels to a differential pressure cell and forms together with said cell an air volume measurement device for use in an internal combustion engine, for example.