Description
The differential pressure is measured with a differential pressure transmitter between the up-stream tapping in the wall of the cone meter and the down stream tapping in the cone.
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Design and calculation standards
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ISO 5167-5, EN, PED 2014/68/EU, ANSI/ASME
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Sizes
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DN 50 – 1000, 2” – 40”
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Pressure rating
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PN 10 400, 150 2500 lbs, 6.000 – 15.000 psi
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Material
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Carbon steel P235GH, P250GH, A105N, A350LF2, A106 Gr. B, AISI 316, 22 Cr. Duplex, 25 Cr. Duplex, 6Mo, 16Mo3 (F1), 13CrMo4-5 (F11) 10CrMo9-10 (F22), other materials on request
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Mounting style
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Weld ends according to EN 9692-1, ANSI B16.25. Flange connections according to DIN, ISO, ANSI, Norsok or API Hub connection for clamping between hubs (Grayloc or other brands)
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Pressure taps
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½”, ¾” NPT ext., ½”, ¾” flanged, others on request
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Flange facing
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Flat or raised face according to DIN 2526 or flat, raised face or ring type joint according to ANSI B 16.5
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Accuracy
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+/- 1-2 % un-calibrated, +/- 0,5 % calibrated. (of discharge coefficient)
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Repeatability
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+/- 0,1 %
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Pressure loss
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40 % of measured differential pressure with beta ratio 0,7
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Limits for Reynolds No
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Re > 10.000, lower Re. Consult factory
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Installation requirements
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Down to 5 x D up-stream and 2 x D down-stream.
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Shut-off valves
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Condensing chambers for steam flow measurement
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Steam jacket (only type WT)
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Type M-CONE CT
The most common has the up stream pressure taken from a tapping in the wall of the cone meter and the down stream pressure taken from the down stream side of the cone and lead to a tapping in the wall
