Principle

EMCO ISA 1932 nozzles ใช้องค์ประกอบในการวัดอัตราการไหลของไอน้ำ ของเหลว และ ก๊าซ โดยใช้หลักการ Differential pressure

Construction

Design Standards : ISO 5167-3
Sizes : DN 50 – 500
Beta (d/D) : 0.3 < ß < 0.8
Pressure rating : PN 10 – 400, 150 – 2500 lbs
Material : Carbon steel P250GH, AISI 316, 16Mo3, 13CrMo4-5, 10CrMo9-10, WB 36, X20CrMoV121, P91, P92, other materials on request
Mounting style : Weld ends according to DIN 2559 or ANSI B16.25
Pressure taps : Ø 21.3 mm, 24 mm, 26.9mm, 3/8″, 1/2″ BSP, 1/2″ NPT
Tap lengths : 150 mm, others on request.
Tappings : Single pressure tappings
Tap location : At least 45° apart. For steam flow in a horizontal pipe : 180°
To be stated with order.

Technical Data

Accuracy : 0,8 % for b < 0,6, (2b – 0,4) % for b > 0,6 (according to ISO 5167-3)
Pressure loss : Depending on b, for b equal to 0,6 : ca. 60 % of the differential pressure measured
Limits for Re. No. : 2 x 10 4 < ReD < 1 x 10 7 according to ISO 5167-3
Accessories : Shut – off valves and condensing chambers for steam flow.

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