Mounting means for fluid pressure transmitters

Apparatus for measuring fluid pressure in a main flow line and for transmitting the measurements to a remote location from a pair of fluid pressure lines on opposed sides of a reduced diameter orifice in said main flow line;

• said apparatus comprising:
• a valve manifold having a straight high pressure flow passage and a straight low pressure flow passage therethrough in parallel relation to each other and in fluid communication with said pair of fluid pressure lines to said main flow line;
• a mounting plate secured to said manifold and having straight high and low pressure flow passages in straight axial alignment with said high and low pressure flow passages in said manifold, said mounting plate having inner and outer planar surfaces with said inner planar surface being in contact with said manifold;
• a differential pressure transmitter mounted on said outer planar surface of said mounting plate and having high and low pressure flow passages in axial alignment with said high and low pressure flow passages of said mounting plate for measuring the differential fluid pressure between said high and low pressure flow passages and transmitting the measurement to a remote location;
• and
• a gauge pressure transmitter mounted on said outer planar surface of said mounting plate downstream of said differential pressure transmitter and in fluid communication downstream with a predetermined one of said high and low pressure flow passages in said mounting plate for measuring the fluid pressure therein and transmitting the measurement to a remote location.

A transmitter mounting plate adapted to be positioned between a valve manifold and a pair of fluid pressure tansmitters with the valve manifold and one of said fluid pressure transmitters having straight axially aligned low and high fluid passages therein in fluid communication with a pair of fluid pressure taps on opposed sides of a reduced diameter orifice in a main flow line;

• said mounting plate comprising:
• a body of a generally rectangular cross section and being of a generally rectangular shape as viewed in plan, said body having an inner planar surface adapted to be positioned in face to face contact with said manifold and an outer planar surface adapted to be positioned in face to face contact with said pair of fluid pressure transmitters;
• a first pair of ports extending through the plate in parallel relation to each other to provide straight high and low flow passages therein adapted to be in straight fluid communication with said low and high flow passages in said valve manifold and one of said fluid pressure transmitters;
• and
• a second pair of ports extending through said plate in parallel relation to each other and positioned on said plate in a generally symmetrical relation to said first pair of ports, one of said second pair of ports being in fluid communication with the other of said fluid pressure tansmitters and the other of said second pair of ports being inactive and not in fluid communication with said other of said fluid pressure transmitters;
• and a connecting flow passage extends between one of said ports of said first pair and one of said ports of said second pair.