Patent ID: 6435006
Filing Date: 2002-08-20
Classification: G01B

Abstract:
A method for pneumatic length measurement in which the medium used for the measurement is directed through a pre-nozzle and a measuring nozzle onto an impact plate and the distance of the impact plate from the measurement nozzle is determined from a change of a pressure p2 between the pre-nozzle and the measurement nozzle, wherein pressure p1 in front of the pre-nozzle is additionally measured and the length value resulting from the pressure measurement between the pre-nozzle and the measurement nozzle is corrected in dependence on the pressures p1, p2, and wherein as a correction, the following function is used for the calculation of the length:f(p1, p2)=&agr;p1âˆ’p2, wherein &agr;: is a determinable constant.