ISO 5167-2 STANDARD PDF
ISO INTERNATIONAL. STANDARD. ISO. First edition Details of the software products used to create this PDF file can be found. This standard was last reviewed and confirmed in ISO is applicable to primary devices having an orifice plate used with. b.H Endorsement notice The text of ISO has been approved by CEN 5 Orifice plates id- NOTE 1 The various types of standard orifice meters are.
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The European Standard EN ISO has the status of a . teDials fo teh sfotwcudorp erats sut deo crtaee tihs PDF file cna f ebi dnuon .. The numerical values of ε for orifice plates given in ISO are based on. standard by DIN-adopted European-adopted ISO Standard, 01/01/ Printed Edition + PDF; Immediate download; $; Add to Cart. Home; BS EN ISO standard by British Standard / European Standard / International Organization for Secure PDF. ℹ.
Parameters of this equation are detailed in table ISO One of the principle advantages of orifice plates manufactured and. Orifice plates are still the most widely used type of.. Orifice Plates.. Download PDF brochure. The Orifice Plate is a differential pressure device suitable to measure the flow rate in a closed conduit it is an.
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Straight lengths shall be measured from the uK downstream end of the curved portion of the nearest or only bend or of the tee or the downstream end of the curved or conical portion of the reducer or the expander.
NOTE 2 Most of the bends on which the lengths in this table are based had a radius of curvature equal to 1,5D. Such an installation is not, however, recommended.
Since in practice such conditions are difficult to achieve, the following information may be used as a guide for normal installation practice. If either of the minimum straight lengths is selected from Column B i.
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The required length between the valve and the 2nd fitting according to 2 should be added to the length between the orifice plate and the 1st fitting specified in Table 3; see Figure 6. It should be noted that b. The distance between the orifice plate and the fitting shall be measured along the pipe axis.
Key 1 expander uK b. In each case, the La second fitting from the orifice plate is two bends in perpendicular planes the separation between the bends is 10 times the diameter of the bends and the orifice plate has diameter ratio 0,4. If the valve has length 1D an additional total length of 9D is required which may be either upstream or downstream of the valve or partly upstream and partly downstream of it. So no additional length is required because of 6.
So an additional total length of 19D is required which may be either upstream or downstream of the expander or partly upstream and partly downstream of it. In either case the test work shall be carried out using orifice plates. Unpatented flow conditioners which have met the compliance test of ISO are the tube bundle flow straightener and the Zanker flow conditioner plate. Annex B describes some patented flow conditioners which have met the compliance test.
Annex B describes some flow conditioners which can be used upstream of orifice plates and the requirements for uK straight lengths associated with them.
It is not intended that the inclusion of the flow conditioners described there should limit the use of other flow conditioner designs which have been tested and proved to provide sufficiently small shifts in discharge coefficient.
In order to reduce the swirl that can occur between the exterior tubes of the tube bundle flow straightener La and the wall of the pipe, the maximum outside diameter of the flow straightener, Df, shall satisfy 0,95D u Df u D The length, L, of the tubes shall be between 2D and 3D, preferably as close to 2D as possible. The individual tube wall thickness of the tube bundle flow straightener shall be thin.
All Flu tubes shall have an internal chamfer on both ends. The wall thickness shall be less than 0,D; this value is based on the wall thickness of the tubes used to collect the data on which this part of ISO is based.
Individual tubes should be welded together at the points of contact, at least at both ends of the tube bundle. It is important to ensure that the tubes are parallel to each other and to the pipe axis since, if compliance with this requirement is not met, the straightener itself may introduce swirl into the flow. Centring spacers may be provided on the outside of the assembly to assist the installer in centring the device in the pipe; these may take the form of small lugs or small rods parallel to the pipe axis.
After being inserted in the pipe, the tube bundle shall be securely fastened in place. Secure fastening, however, should not distort the tube bundle assembly with respect to symmetry within the pipe. Key 1 2 3 4 minimized gap pipe wall tube wall thickness centring spacer options typically four places uK b.
H a D f is the flow straightener outside diameter. Figure 8 — tube bundle flow straightener 6. The tube bundle flow straightener shall be installed so that the distance between the downstream end of the tube bundle flow straightener and the orifice plate is equal to 13D r 0,25D.
The tube bundle flow straightener shall be as described in 6. The permitted locations for the tube bundle flow straightener depend on Lf, the distance from the orifice plate to the nearest upstream fitting, measured to the downstream end of the curved portion of the nearest or only bend or of the tee or the downstream end of the curved or conical portion of the reducer or expander.
Table 4 provides the permitted location range and the recommended location for the tube bundle flow straightener for two ranges of Lf: The locations for the tube bundle flow straightener are described in Table 4 in terms of the straight lengths between the downstream end of the tube bundle flow straightener and the orifice plate. If, for a particular upstream fitting, an orifice plate diameter ratio and a value of Lf, there is no location shown in Table 4 for a tube bundle flow straightener , then an installation with this fitting, E and Lf, is not recommended.
H The length required downstream of the orifice plate shall be as given in Table 3.
An example of the use of Table 4 is given in 6. H 14 f 12 f f f 0,75 14 8 to n e 8 to n e 9,5 to n e 8 to n e 9 to n e 12 to 14 7 to n e 9,5 8 to 22 to 16,5 to 12,5 13,5 13,5 13 13 14 to 16,5 14 to 16,5 12 to 12,5 12 to 12,5 13 13 12 to 13 12 to 13 9,5 9,5 13 13 Recom- to 14,5 to 14,5 for for for for for for for for for for for for for for uK mended for for E u 0,67 E u 0,75 E u 0,75 E u 0,75 E u 0,75 E u 0,75 E u 0,54 E u 0,75 E u 0,75 E u 0,75 E u 0,46 E u 0,75 E u 0,67 E u 0,75 E u 0,67 E u 0,75 NOTE The straight lengths given in the table are the permitted lengths between the downstream end of a tube bundle flow straightener as described in 6.
The distance L f from the orifice plate is measured to the downstream end of the curved portion of the nearest ft. The recommended values give tube bundle locations that are applicable over a specified range of E. It is desirable that the length between the upstream end of the tube bundle flow straightener and the downstream end of the curved or conical portion of the nearest fitting should be at least 2,5D, except where this would not give an acceptable value for the distance between the orifice plate and the downstream end of the tube bundle flow straightener Since in practice such conditions are difficult to achieve, there shall be at least 15D of straight pipe between the fitting listed in Table 4 and the nearest fitting beyond that one, unless the columns relating to any fitting are used.
Either an installation as in 6. If the upstream straight length from the orifice plate to the bend is greater than or equal to 30D, Table 4 can also be used to provide a wider range of tube bundle locations but since these locations will rarely be required in designing installations these options are not shown in Figure 9. H a Installation using 6. It is not patented.
The Zanker flow conditioner plate  shown in Figure 10 met the compliance test requirements given in 7. The dimensions of the holes are a function of the pipe inside diameter D and uK shall be as follows: H d a ring of 8 holes of diameter 0,D r 0,D on a pitch circle diameter of 0,85D r 0, 5D; e a ring of 8 holes of diameter 0,D r 0,D on a pitch circle diameter of 0,90D r 0,D. La The perforated plate thickness, tc, is such that 0,12D u tc u 0,15D.
The flange thickness depends on the application; the outer diameter and flange face surfaces depend on the flange type and application. H The distance to a bend or bend combination or a tee is measured to the downstream end of the curved portion of the nearest or only bend or of the tee. The distance to a reducer or expander is measured to the downstream end of the curved or conical portion of the reducer or the expander. The locations in this subclause are acceptable downstream of any fitting.
A wider range of locations for the Zanker flow conditioner plate is permissible if the range of upstream fittings is restricted or the overall length between the upstream fitting and the orifice plate is increased or the diameter ratio of the orifice plate is La reduced.
These locations are not described here. The internal mean diameter shall be the arithmetic mean of measurements of at least twelve diameters, namely four diameters positioned at approximately equal angles to each other, distributed in each of at least three cross-sections evenly distributed over a length of 0,5D, two of the sections being at distance 0D and 0,5D from the upstream tapping and one being in the plane of the weld in the case of a weld-neck construction.
ISO-5167 Download (Instant Download)
If there is a carrier ring see Figure 4 , this value of 0,5D shall be measured from the upstream edge of the carrier ring. Therefore mating flanges would require the bores to be matched and the flanges aligned on installation.
Dowels or self-centring gaskets could be used. On each side of the step, the pipe shall have a diameter between 0,98D and 1,06D. Beyond 10D from the orifice plate, the use of gaskets between sections will not violate this requirement provided that in use they are no thicker than 3,2 mm and they do not protrude into the flow. On each side of the step, the pipe shall have a diameter between 0,94D and 1,06D.
This can be judged by checking a single diameter of the downstream straight length. Mating flanges Flu would require the bores to be matched and the flanges aligned on installation. The distance ec between the centreline of the orifice and the centrelines of the pipe on the upstream and downstream sides shall be measured, and for each pressure tapping the components of the distance between the centreline of the orifice and the centreline of the pipe in which it is located in the directions parallel to and perpendicular to the axis of the pressure tapping shall be determined.
This additional uncertainty shall only be added once even if the above inequality holds for several pressure tappings.
In the case where, for any pressure tapping, 0, D either ecl or e cn! It is necessary, when holding the orifice plate between flanges, to allow for its free thermal expansion and to avoid buckling and distortion.
They shall be as thin as possible, with due consideration taken in maintaining the relationship as defined in 5. The values given are not intended for precise interpolation. It gives the situations in which the flow conditioners ft. It is not intended that the inclusion of the flow conditioners described here should limit the use of other flow conditioner designs which have been tested and proved to provide sufficiently small shifts in discharge coefficient. These flow conditioners, available commercially, are given as examples of devices which have passed the compliance uK test.
This information is given for the convenience of users of this part of ISO and does not constitute an endorsement by ISO of these products. It consists of an anti-swirl device, a settling chamber and lastly a profile device as shown in Figure B.
List of ISO standards. From Wikipedia, the free encyclopedia. This is a list of ISO standards that are discussed in Wikipedia articles. For a list of all the more than 16, ISO standards as of.
About of the standards produced by ISO. The Department has a free licence to copy, circulate and use the contents of this report within any.. ISO , which is still in force, contains a table giving very long impulse-line lengths and very large.
EN ISO March ICS Pdf Free Download. Download de nieuwste versie van Iso Work gratis in het nederlands! Re: Iso Here you go Attached Files. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General. Free Excel App Download. Carello1, A. Ivanov1, and F. This article proposes a flow rate test bench compliant to ISO Standards allowing.. Iso Sec. Iso pdf free download. Click here to get file. Orifice design calculator main screen.
Web tracks free download free of risk download.La The upstream and downstream pressure tappings shall have the same diameter. Iso 1 measurement of fluid flow by means of pressure differential. It is important to ensure that the tubes are parallel to each other and to the pipe axis since, if compliance with this requirement is not met, the straightener itself may introduce swirl into the flow.
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Flow Cad software users manual. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September , and conflicting national ft. Download the.
One of the principle advantages of orifice plates manufactured and. For research and calibration work in particular, it is recommended that the upstream values b.
The flange thickness depends on the ft. H 0,60 42 13 30 18 42 18 44 18 65 h 25 29 18 30 18 9 5 26 11 14 7 30 15 5 3 7 3,5 0,67 44 20 44 18 44 20 44 20 60 18 36 18 44 18 12 6 28 14 18 9 30 15 5 3 7 3,5 0,75 44 20 44 18 44 22 44 20 75 18 44 18 44 18 13 8 36 18 24 12 30 15 5 3 8 4 NOTE 1 The minimum straight lengths required are the lengths between various fittings located upstream or downstream of the orifice plate and the orifice plate itself.
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