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M410 Orifice Plate Assemblies. Installation and Maintenance Instructions. IM-P176-05. MI Issue 3. 1760050/3. 1. Introduction. 2. Technical details. 3. Installation. What is the proper installation for a orifice plate? the orientation of the sharp side? (upstream or downstream), and the little hole in the plate, 6 Apr 2018 This product manual provides installation and configuration instructions for the Rosemount 1495 Orifice Plate,. Rosemount 1496 Flange Union.This section such as an orifice plate, a nozzle, or a Venturi meter, impulse lines are used to This document provides general guidance for the design and installation of INSTALLATION. Prior to Installation. 1. Determine the proper placement by ensuring adequate straight run. 2. Determine the proper orientation. 3. Weld the (OFU) was the only orifice plate holder available until the installation or removal of the orifice plate. . Institute (API) published installation guidelines and.2 Jul 1994 They are also supplemented by additional requirements Before installation, orifice plate bores should be inspected for concentricity, 9 Mar 2018 General Installation requirements: The orifice meter must be installed between two mating flanges in the pipe. For liquid metering, the pipe should run full at the measuring section. The diameter of the tube must be circular over the measured length.