Method for measuring gas stream discharging from nozzle, involves detecting measurement value at different dots of gas stream in flow direction to nozzle where back pressure measurement takes place on different dots

摘要

The method involves detecting measurement value at different dots of gas stream (2) in flow direction to a nozzle (1). A back pressure measurement takes place on the different dots. A measuring unit (4) is brought in time sequence on different dots so as to measure back pressure. Different points of the measuring device are automatically approached in succession, where a probe is used as a Prandtl-measuring device. A streak-optical measurement is additionally performed for a back pressure measurement.