INDUSTRIAL FLOW METER

MES

EMCO Orifice Plate Series MES with Single Pressure Tapping in All Welded Construction
The EMCO Orifice Plate is used as a primary element in flow measurement of liquid, gas and steam applications based on the differential pressure principle. According to this working principle, the orifice plate creates a flow restriction in the pipeline to allow measurement of the resulting pressure drop and flow rate. Our orifice plates have been tested and tried for over 50 years and measure up to the highest industry and compliance standards.

The Orifice Plate Series MES is constructed with a single pressure tapping in all welded construction

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หมวดหมู่: Differential Pressure, Flow Meter, Orifice Plate

แบรนด์: EMCO

Overview

Design

Installation
Before installation, the orifice plate must be kept clean and protected against corrosion and physical damage. It is also important that you pay careful attention to to the sharp edge of the plate. Once ensured that it is clean, install the orifice plate carefully such that the orifice bore aligns with the centre of the pipeline. Tap location varies depending on whether it is used for liquid, gas or steam. It is not supplied with any safety devices and must not be used for higher pressure, than stated on the name plate. The pipe system must therefore be equipped with a safety device. However, this type of primary element requires no special maintenance.

Features

Predictable pressure loss
Simple construction
Proven design
Cost-effective

Specifications

Construction



Design and calculation standards	ISO 5167-2, ASME MFC-3M, DIN 19215, Shell Flow Meter Engineering Handbook, AGA no. 3
Sizes	2″ – 40″, DN 50 – 1000
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

Sizing

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