Device for detecting a variation in a pressure being monitored by sensing displacement of a ball in a tube
AssigneeSociete Civile d'Etudes et de Recherches Revo'Reg
InventorGuy Boutin
Life of this patent
Estimating the term…
Abstract
A detector tube is supplied with air at an adjustable pressure balanced by at least two adjustable leak flow rates in the conduits 4 and 7 in order to adjust the position of ball in the tube. The possible manual inclination of tube between an extreme vertical position and position slightly inclined to the horizontal is a complementary means of adjustment. The detector tube can be used for the detection and measurement of micropressures and micro flow rates.
Claims15
A device for detecting and transmitting a variation in air pressure or depression, for emission of an analog or digital signal, comprising a detector tube containing a displaceable ball, a signal representing the movement of said displaceable ball being detected and transmitted by a detection unit, the pressure in said tube varying as a function of the pressure and/or depression to be monitored, wherein said detector tube is an air micro-wave tube supplied with air at an adjustable pressure which is balanced by at least two adjustable air leaks, at least one on a conduit upstream of said tube and the other on a conduit downstream, to adjust position of said ball in said tube, and wherein a complementary means for adjusting position of said ball is obtained by a manual inclination of said tube between an extreme vertical position and a position slightly inclined with respect to a horizontal axis.
Dependencies are inferred from the claim text.