| Popis: |
The measurement of pulsating flows with inferential-head meters has been rather undependable because of the fact that it was known that these measurements might be greatly in error due to pulsation, and no satisfactory instrument was available for measuring the intensity of the pulsation waves. This paper tells of two types of instruments which have been developed for measuring the frequency and amplitude, or the amplitude alone, of the differential pulsation wave which is the difference between the amplitude of the upstream and downstream pulsations and tells how these instruments are used. The results of considerable research are given to show how meter error varies with differential pressure and amplitude of pulsation waves. |
