Description
EMCO orifice plate are used as primary elements in flow measurement of liquid, gas and steam according to the differential pressure principle
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Design and calculation standards
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ISO 5167, ISO/TR 15377, BS 1042, ASME Fluid Meters, DIN 19205Shell Flow Meter Engineering Handbook
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Sizes
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DN 10 – DN 50, 3/8” - 2"
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Pressure rating
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PN 10 - 400, 150 - 2500 lbs
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Plate thickness
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3 mm
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Vent or drain hole
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On request
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Plate material
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AISI 316, other on request.
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Carrier ring and pipe material
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Carbon steel, AISI 316, other materials on request
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Pipe run
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Can be honed for increased accuracy
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Flange standards
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DIN, AISI B 16.5
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Pressure taps
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3/8", 1/2" BSP, Ø 12 mm, 1/2" NPT.int.
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Male tappings
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On request
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Connection
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Weld ends or flanges with flat or raised face or groove according to DIN 2526, 2513 or 2512, or RF and RTJ according to ANSI B 16.5
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Orifice plate shapes
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Square edge concentric, other shapes on request. Orifice plates are bevelled on the downstream side
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Marking
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The orifice plate is marked with "+" and"-" and flow direction.
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Accuracy
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+/- 0,8 - 1 %
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Pressure loss
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Depending on β, for β equal to 0,6 : ca. 60 % of the differential pressure measured
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Limits for Reynolds No
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Re > 1260 x β2 D according to ISO 5167 2000 < Re < 108 according to ASME MFC-3M
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Shut-off valves and condensing chambers for steam flow measurement. Flange assembly complete with bolts, nuts and gaskets
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DN |
Inches |
Total length (mm) |
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10
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3/8”
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400
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15
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½”
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550
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20
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¾”
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700
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25
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1”
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900
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32
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1 ¼”
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1100
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40
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1 ½”
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1300
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50
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2”
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1500
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