The Model CO Compact Orifice is a wafer body orifice plate that includes an integral three-valve manifold. This cast, rugged, one-piece unit mounts directly to an I/A Series® differential pressure transmitter. An alignment ring and an optional installation kit provide the hardware necessary to properly install the orifice in various pipeline sizes having ANSI® or DIN flanges.

Features
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Used with the following I/A Series Differential Pressure Transmitters: IDP10 DP Transmitter, IDP25 Multirange Transmitter, IDP50 Premium Performance Transmitter, and IMV25 and IMV30 Multivariable Transmitters.
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Direct mounting of the Model CO Compact Orifice to d/p Cell® transmitter, as compared to separate and remote manifold and transmitter installations, provides improved and more consistent performance and a greatly simplified and economical installation procedure.
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The Compact Orifice and the calibrated transmitter are factory assembled to form a functioning unit, and shipped ready for installation in a pipeline.
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Suitable for use in liquid, gas, or steam service.
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A 316 ss, 25 mm (1 in) thick wafer body, with a concentric orifice.
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Optimal beta ratios of 0.40 or 0.65 available.
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Rugged, cast, one-piece construction (orifice plate and manifold) eliminates tubings, fittings, and orifice-to-manifold leakage points.
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Offered for use in pipeline sizes ranging from DN 15 to DN 100, or 1/2 to 4 inches, having ANSI or DIN flanges.
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A standard alignment ring, for use with the pipeline size and ANSI or DIN flange selected, is provided with each Model CO to easily and accurately center the orifice within the pipeline.
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Pipeline installation kits (with studs, nuts, and gaskets), consistent with pipeline size and flange type, are optionally available.
Sizes and Configurations Available for Most General Purpose Applications
The compact orifice can be installed in pipelines having 1/2 to 4 in ANSI Class 150, 300, or 600 flanges, or DN 15 to DN 100 DIN PN 16, PN 40, or PN 100 flanges. This is consistent with most general purpose requirements where gas, liquid, or steam flow is to be measured. Beta ratios (β) of 0.45 or 0.65 may be selected which are optimal betas for most concentric orifice flow applications.
Integreal Three-Valve Manifold
The 3-valve isolation manifold and wafer body orifice plate are machined from the same cast part. This provides a rugged, one-piece unit that eliminates tubing and connections between the orifice plate and manifold.