Principle

EMCO ISA 1932 nozzles ใช้องค์ประกอบในการวัดอัตราการไหลของไอน้ำ ของเหลว และ ก๊าซ โดยใช้หลักการ Differential pressure

Construction

Design and calculation standards : ISO 5167-3, DIN 19215
Sizes : DN 65 — 500
Bore (d) : d > 50 mm
Beta (d/D) : 0,316 < ß< 0,775
Pressure rating : PN 10 – 640, 150 – 2500 lbs
Material : Carbon steel P250GH, AISI 316, heat resisting steels:
16Mo3, 13CrMo4-5, 10CrMo9-10, WB 36, X20CrMoV121, F91, F92, other materials on request
Mounting style : Weld ends according to DIN 2559 or ANSI B16.25 or flange connection according to DIN or ANSI
Pressure taps : Ø 21.3 mm, 24 mm, 26.9 mm, 3/8″, 1/2″ BSP male, 1/2″ NPT
Tappings : Single pressure tappings or 2×4 tappings each arranged with an external annular ring to equalise the pressure.
Tap lengths : 150 mm, others on request
Tap location : At least 45 degrees apart, for sizes below DN 150.
To be stated with order.

Technical Data

Accuracy : ca. 1,4 — 1,5 % (according to ISO 5167)
Pressure loss : ca. 15 % of the differential pressure measured
Limits for Re. No. : 1,5 x 10 5 < ReD < 2 x 10 6 according to ISO 5157-3
Accessories : Shut-off valves and condensing chambers for steam flow.

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