Customizable averaging pitot tube probe and process variable transmitter

摘要

A customizable length averaging pitot tube (APT) probe for insertion into a confined conduit is disclosed. The APT probe includes a probe portion, configured to be inserted into the confined conduit, which includes longitudinally extending upstream, downstream and middle surfaces to form first and second fluid carrying plenums within the APT probe portion. A plurality of longitudinally arranged openings are disposed along the length of the upstream surface with each opening in fluid communication with the first fluid carrying plenum. A plurality of longitudinally arranged openings are disposed along the length of the downstream surface with each opening in fluid communication with the second fluid carrying plenum. A cap is affixed to an end of the APT probe portion to isolate the first and second fluid carrying plenums. An elongated body is coupled to the APT probe portion and provides fluid passageways fluidically coupled to the first and second plenums.

主权项

1. A method of customizing an averaging pitot tube (APT) probe for insertion into a particular confined conduit, the method comprising:
providing an APT probe portion having a plurality of predefined cutting regions identified by visual indicators which define adjustable lengths of the APT probe portion, the APT probe portion comprising a longitudinally extending upstream surface and a longitudinally extending downstream surface which form first and second fluid carrying plenums within the APT probe portion, the APT probe portion further comprising a plurality of longitudinally arranged openings in the upstream surface disposed along a length of the upstream surface with each opening in fluid communication with the first fluid carrying plenum, and a plurality of longitudinally arranged openings in the downstream surface disposed along a length of the downstream surface with each opening in fluid communication with the second fluid carrying plenum; cutting the APT probe portion at a selected one of the plurality of cutting regions to adjust the length of the APT probe portion and to form a distal end configured to be inserted into the particular confined conduit; and affixing a cap to the distal end of the APT probe portion, the cap sealing the first and second fluid carrying plenums at the distal end of the APT probe portion.