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EMCO Orifice Plate with Single Pressure Tapping Series MES in all Welded Construction

Principle:EMCO orifice plate are used as primary elements in flow measurement of liquid, gas and steam according to the differential pressure principle

Sizing of the product
DN
Ø Inner pipe
Upstream length ISO 5167
Total length ISO 5167
Upstream length DIN 19215
Total length DIN 19215
50
45 - 57
115
230
150
250
65
58 - 72
145
290
180
300
80
73 - 90
180
360
230
350
100
91 - 112
225
450
280
400
125
113 - 137
275
550
350
500
150
138 - 162
325
650
400
600
(175)
163- 187
375
750
470
700
200
188 - 225
450
900
570
800
250
226 - 275
550
1100
690
1000
300
276 - 325
650
1300
820
1200
350
326 - 375
750
1500
950
1400
400
376 - 425
850
1700
1050
1500
450
426 - 475
950
1900
1200
1700
500
476 - 550
1100
2200
1370
2000
600
551 - 650
1300
2600
1500
2000
700
651 - 750
1500
3000
1500
2000
800
751 - 850
1700
3400
1500
2000
900
851 - 950
1900
3800
1500
2000
1000
951 - 1100
2200
4400
1500
2000

Images & drawings

Construction
Design and calculation standards
ISO 5167-2, ASME MFC-3M, DIN 19215, Shell Flow Meter Engineering Handbook, AGA no. 3
Sizes
DN 50 - 1000 according to DIN 2402
Pressure rating
PN 10 - 400, 150 - 2500 lbs
Plate thickness
10 mm
Vent or drain hole
On Request
Material
Carbon steel P235GH, AISI 316, 16Mo3, 13CrMo4-5, 10CrMo9-10, WB 36, X20CrMoV121, other materials on request
Mounting Style
Weld ends according to DIN 2559 or ANSI B16.25
Pressure taps
Ø 21.3 mm, 24 mm, 26.9 mm, ½" BSP male, ½" NPT male
Tap Length
150 mm, others on request.
Tap Location
Tap location for steam flow: 180°. At least 45° apart for liquid and gas. To be stated with order
Orifice plate shapes
Square edge concentric, square edge eccentric, conical, 1/4 circle, segment. The plate is bevelled on the down stream side except for 1/4 circle orifice plate
Marking
The orifice plate is marked with "+" and"-" and flow direction.
Technical Data
Accuracy
+/- 0,5 % for β < 0,6 and equal to β for β values above 0,6
Pressure loss
Depending on β, for β equal to 0,6 : ca. 60 % of the differential pressure measured
Limits for Reynolds No
Re > 1260 x β2 D according to ISO 5167 2000 < Re < 108 according to ASME MFC-3M
Accessories
single and double shut-off valves and condensing chambers for steam flow measurement