The static pressure reference head assembly consists of a half-inch rigid conduit with a one-hundred-eighty-degree bend secured to a curb via mounting brackets and a cap. The top of the conduit connects through a locknut to a mounting plate assembly featuring ten-inch square aluminum plates at the top and bottom separated by a one-inch spacer. Stainless steel nuts and bolts fasten the plates together, with a half-inch hole provided in the upper plate. Control tubing extends from a tee fitting on the vertical conduit run to the static pressure transmitter.
LOCKNUT MOUNTING PLATE 1" SPACER SECURE TO CURB STAINLESS STEEL NUTS AND BOLTS 1/2"∅ HOLE IN UPPER PLATE MOUNTING BRACKET CAP 1/2" RIGID WITH 180° BEND CONTROL TUBING TO STATIC PRESSURE TRANSMITTER 10" SQ. ALUMINUM PLATE, TOP & BOTTOM
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