Principle:EMCO orifice plate are used as primary elements in flow measurement of liquid, gas and steam according to the differential pressure principle
DN |
Inches |
Total length (mm) |
|---|---|---|
|
10
|
3/8”
|
400 mm
|
|
15
|
½”
|
550 mm
|
|
20
|
¾”
|
700 mm
|
|
25
|
1”
|
900 mm
|
|
32
|
1 ¼”
|
1100 mm
|
|
40
|
1 ½”
|
1300 mm
|
|
50
|
2”
|
1500 mm
|
|
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
|
3 mm
|
|
Vent or drain hole
|
On Request
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Plate Material
|
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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Accessories |
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|---|---|
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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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