flow element · 2017. 3. 1. · orifice plate オリフィス ... ring having pressure outlet...

FD-8-3 3

ＦＬＯＷＥＬＥＭＥＮＴ

フローエンジニアリング株式会社

主な取扱製品

Main Products

FD-8-3:014 2

オリフィスプレートOrifice Plate

オリフィスリングアッセンブリーOrifice Ring Ass'y

オリフィスフランジアッセンブリーOrifice Flange Ass'y

フローノズルFlow Nozzle

フローノズルパイプアッセンブリーFlow Nozzle Pipe Ass'y

ベンチュリーVenturi Tube

オリフィスブロックOrifice Block

バーフローチューブ(多孔式ピトー管)Barflow Tube

ダブルベンチュリーDouble Venturi

多孔式整流板Multi Holes Straightner

φ45型ピトーベンチュリーφ45 Pitot venturi

リザーバー・シールポットReservoirs and Seal Pots

サクションノズルSuction Nozzle

スロートタップフローノズルASME PTC 6

Throat Tap Flow Nozzle

主な取扱製品

Main Products

The flow m easurem ent is one of the m ost im portant industrial m easuring processes. This process,

incorporating a throttle elem ent in a pipeline through w hich a fluid (liquid or gas) flow s and using the difference

betw een the upstream and dow nstream pressures of the throttle elem ent, is m ostly used in today's industrial

m easurem ent and autom atic control of the flow s of fluids. W hen a fluid flow ing through a pipeline passes a

throttled (contracted) part of the pipeline, the flow velocity increases according to the equation of continuity

and the pressure decreases according to the B ernoulli's equation, denoting the existence of a close relation

betw een the pressure difference and the flow velocity. Based on this relation, the flow rate can be determ ined

by m easuring the differential pressure.

The C om pany specializes in engineering, m anufacturing and supplying various kinds of throttle elem ents, the

essentials in the m easurem ent of fluid flow .

FD-8-3:109 3

There are various types of m easuring elem ents including differential pressure and volum etric types.

C urrently m ostly used is the differential pressure type.

The representative m easuring elem ent is orifice plate. O ther elem ents include flow nozzle and venturi tube.

They are specified by JIS, ASM E, ISO , D IN, BS, SPINK, SHELL REPO RT 1312M etc.

P2

P1

Differential pressure ΔP=P1-P2

W hen a throttle elem ent is interposed in a pipeline, a difference is produced betw een the pressures at

upstream and dow nstream of the throttle elem ent as illustrated in Fig. 1. This difference (h＝p1-p2) is called

differential pressure.

The fluid passing through the section 2 gradually regains its pressure as it flow s dow nstream , but the

dow nstream pressure cannot be recovered up to the upstream pressure, because part of the pressure being

lost. This loss is called a pressure loss (perm anent pressure loss ＝ p1-p3).

The extent of this pressure loss depends on the type of throttle elem ents and their diam eter ratio, as show n

in Fig. 2.

The relation betw een the flow rate and the differential pressure is given by:

(1)γ

hKQ

1

LLLL=

(2)KQN LLN

1γ

1hγ=

(3)KW LLL××= hγ1

Q(m3/h)

QN(Nm3/h)

W(kg/h)h(kg/m2)γ1(kg/m

3)

γN(kg/Nm3)

K

: Volume Rate of Flow at Density inOperating Conditions

: Volume Rate of Flow at Density inBasic Conditions

: Weight Rate of Flow: Differential Pressure: Density at Operating Conditions: Density at Basic Conditions: Coefficient(determined by type and

size of throttle element)

From the above, the relation betw een the flow rate and the differential pressure w here the densityis constant but the flow rate is variable, is as listed in Table 1. In other words, the flow rate isobtainable by m easuring the differential pressure. W hen the density is variable (w hen the pressure andtem perature are variable), the true flow rate can be given by com pensating the variance of the densityby the above equations (this, how ever, is not applicable w hen the density varies to a great extent).

1 2

D

Pressure Loss

hp1

p2

p3

Throttle Elem entFig.１

0

10

20

30

40

50

60

70

80

90

100

0.30.2 0.70.60.50.4 0.8

D iam eter ratio

Orifice

Venturi Tube

Venturi Nozzle

Flow Nozzle

Fig.２

FD-8-3:109 3

Flow rate

Differential

pressure

100 90 80 70 60 50 40 30 20 10 0

100 81 64 49 36 25 16 9 4 1 0

Relation betw een Flow Rate and D ifferential Pressure

Table１

％

Pressure taps shall be located so as not to introduce drain pressure tube for gas, and not to introduce air in

pressure tube for liquid.

Pressure Tap Location

FD-8-3:109 3

■Horizontal Piping

≦180°For G as

Ａ：Above center level within180°

For Liquid

Ｂ:Below center level within 180°

≦180°

■Vertical Piping(For both gas and liquid)

Ｄ:U pstream and Downstream sides,Upstream side Pressure tube shall bethe sam e level as of D ownstream tap.

Ｅ:U pstream and Downstream sides,Downstream sides Pressure tube shall bethe sam e level as of Upstream tap.

Ｃ: Upstream and D ownstream sides

In case the pressure head between H and L

can be adjusted by differential pressure

gauge , or the pressure head can be

neglected in gas flow.

In case the differential pressure in piping is measured by releasing the pressure head

between H and L , such as by adjusting the pressure in same level in steam and liquid

piping (or reservior and seal pot).

The hole in pressure tap shall be of smooth inside surface and correct roundness, and the edges

shall smoothly be finished.

FD-8-3:109 3

■Exam ples of C orrect Pressure Tapping

■Exam ples of W rong Pressure Tapping

δ

≧2δ

0.4R max.Free of burrs.

δ ≦ 0.08D(But should be 4m m ≦δ≦10m m to avoid clogging)

Flash with pipe inside surface0.4R max.Free of burrs.

Protruding tap into pipe bore tend to introduce dynam ic pressure w hich results in significant error.

Ａ：Protruded

φ16

Ｂ：Recessed

δ

According to the ASM E report, an error of －18% is reported w hen ℓ＝3m m in the case of Ａ,and an error of －4% when ℓ＝0.5δ in the case of Ｂ.W hen ℓ is 2δ or m ore, there is no error.

O rifice Plate Type O P

O rifice Plates are m ost widely used flow elem ent because ofsim ple shape, easy installation and change, low cost, andhigh reliability.T here are various types such as: C oncentric O rifice,Eccentric O rifice, Segm ental O rifice, Q uadrant O rifice andSquare O rifice. D -D /2 taps shall be used for those of size200A (8 inches) and upper.For those less than 200A , the follow ing types are generallyused.Type O R: O rifice flange assem bly com bined w ith orifice ring.Type O F: O rifice flange assem bly com bined with orifice flange.

JIS2K JIS5K JIS10K JIS16K JIS20K JIS30K JIS63KJPI150 JPI300 JPI600 JPI900ANSI150 ANSI300 ANSI600 ANSI900

50A～1000A

：Concentric sharp edge, Q uadrant, Eccentric, Segm ental

：Vena contracta taps, Flange taps, C orner taps, D ･D /2 taps, Pipe taps

* Quadrant orifice, Eccentric orifice and Segmental orifice shall be of flange tap or corner tap.

：SUS304 SUS304L SUS316 SUS316L

* Please advise other material you want to use.

Standard for calculation of orifice sizing ,diffrential pressure and flow rate are follows.JIS Z8762-2007, JIS Z8762-1995, JIS Z8762-1969, JIS M8010, ISO 5167:2-2003,AGA REPORT3, ASME FLUID METERS, ASME MFC 3M, ASME PTC19.5

* Please advise other code/standard you want to apply.

* If you need the sizes of less than 50A or m ore than 1000A ,please also ask us.

For our estim ation or the order to us, please advise the following.

Type O P , Size , Rating , O rifice Type , M aterial

and special requirem ents if any.

Please advise the necessary data on "Flow Elem ent Specification" for calculation of orifice sizing, differential

pressure and flow rate , referencing "Necessary item s for flow calculation".

FD-8-3:101 2

* Specifications are subject to change without notice.

FD-8-3:101 2

Air Hole

D rain Hole

For liquids containing solid particles that are likely to sedim ent or for vapors likely to deposit w ater

condensate, this orifice plate is used w ith its eccentric bore bottom flush w ith the bottom of the piping inside

surface so that the sedim entation of such inclusions is avoided. Likew ise, for gases or vapors, it m ay be

installed w ith its eccentric bore top flush w ith the bore top of the piping to avoid the stay of gas or vapor in

its vicinity. Flange taps or vena contracta taps are used for this orifice plate.

Air H ole

This has special features such as sim ple structure, high accuracy, and easy m ounting and dism ounting. Theorifice plates are correctly finished to the dim ensions, surface roughness, and flatness to the applicable standard.Differential pressure is m easured through flange taps, vena contracta taps, radius taps, or corner taps.

The bore of this orifice plate is a sem icircle to perform the sam e function as the eccentric orifice plate. This

is used for the sim ilar purposes.

Flange taps or vena conracta taps are em ployed to take out fluid pressures.

The inlet edge of the bore of this orifice plate is rounded to a quarter circle. This orifice plate is principally

used for m easuring flow rates of low Reynolds Num bers.

Flange taps or corner taps are used.

The square orifice plate is used for square pipings. Its functions are sim ilar to those of the concentric orifice

plate.

W hen installing an orifice plate, m ake sureof its upstream and downstream sides, itsprecise centering with piping, and theposition of the gaskets so that they shouldnot be obstructive. If an orifice plate whosedownstream end of bore is beveled to 45°is erroneously installed upstream side down-stream , the m easured flow rates will belower than the actual flow rates.

Fig.3 Fig.4 Fig.5

Air H ole

Fig.6

Air Hole

D rain H ole

Fig.7


O rifice Ring Type O R

O rifice ring assem bly is the com bination of orifice plate, a

ring having pressure outlet opening, and gasket. This is

settled betw een pipe flanges and is used for m easurem ent

of com paratively low pressure.

T his can be used for various flow rate, pressure and

tem perature only by changing orifice plate.

D ifferential pressure is taken out by corner tap.

JIS5K JIS10K JPI 150 JPI 300 ANSI 150 ANSI 300

50A～500A

： Corner taps

：SF440A, SFVC2A, SUS304, SUS304L, SUS316, SUS316L


Standard for calculation of orifice sizing , differential pressure and flow rate are as follows.JIS Z8762-2007, JIS Z8762-1995, JIS Z8762-1969, JIS M8010, ISO 5167:2-2003,AGA REPORT3, ASME FLUID METERS, ASME MFC 3M, ASME PTC19.5* Please advise other code/standard you want to use.

* If you need the sizes of less than 50A or more than 500A, please ask us.

For our estim ation or the order to us, please advise the following.

Type O R , Size , Standard / C ode and Rating , O rifice Ring M aterial ,

Differential pressure outlet connection , O rifice Plate Type , O rifice Plate M aterial


For the item s necessary for calculation of orifice sizing, differential pressure and flow rate, please refer to

"Necessary item s for Flow C alculation".

FD-8-3:102 2

：R1/2 screw , NPT1/2 screw, 15A nipple plane end, 15A pressure outlet flange.

：Concentric sharp edge, Quadrant, Eccentric, Segmental

：SUS304, SUS304L, SUS316, SUS316L


： Non-asbestos sheet gasket 1.5mm or 3.0mm thickness.

* If you need other rating, please ask us.

Note: Each of two(2) gaskets shall be placed between orifice plate and orifice ring.Two(2) gaskets to be used between flanges and orifice ring assembly are not supplied.


FD-8-3:102 2

R1/2,NPT1/2

34

SW1/2

L

Gasket thickness:t

For orifice plate thickness, please refer to Type OP (FD-7-2:001).

Type O F and O FJ

Orifice Flange assembly is the combination of orifice plate, flanges

having pressure outlet opening, and bolts, nuts and gasket.

Flanges are, of JIS, ASME, JPI, etc.

These shall be connected to line pipe by:

1) butt welding(weld neck) or,

2) insert and weld(slip-on, socket weld).

Also, there are flat face(FF), raised face(RF), ring joint(RTJ),

etc., depends on the shape of gasket seat.

Flange tap is used for take out differential pressure.

Type OF ：JIS10K,20K,30K , JPI/ANSI 150,300,600,900Type OFJ：JPI/ANSI 900,1500

50A～400A

：Flange taps

：SF440A, SFVC2A, SUSF304, SUSF304L, SUSF316, SUSF316L* Please advise other material you want to use.

* If you need the sizes of less than 50A or more than 400A, please also ask us.

FD-8-3:103 2

：Rc1/2 screw , NPT1/2 screw , 15A Nipple and R1/2 screw , 15A Nipple plane end , 15A Flange (pressure outlet)

：Concentric sharp edge, Q uadrant, Eccentric, Segm ental

：SUS304, SUS304L, SUS316, SUS316L* Please advise other m aterial you want to use.

* If you need other rating , please ask us.

Type OF ：RF-Raised faceType OFJ ：RTJ-Ring joint

Weld neck flange ：WNSlip on weld : S-ON (only for JIS10K）Socket weld : SW (～80A,JIS10K and 20K）

：SNB7/S45C, SUS304/SUS304, ASTMA193-B7/A194-2H* Please advise other m aterial you want to use.


Standard for calculation of orifice sizing , differential pressure and flow rate are as follows.JIS Z8762-2007, JIS Z8762-1995, JIS Z8762-1969, JIS M8010, ISO 5167:2-2003,AGA REPORT3, ASME FLUID METERS, ASME MFC 3M, ASME PTC19.5

* Please advise other code/standard you want to apply.

For our estim ation or the order to us, please advise the follow ing.

Type OＦ or Type OＦＪ , Flange Type , Size , Applicable Standard and Rating ,

O rifice Flange M aterial , Bolt/Nut M aterial , Differential pressure outlet connection , O rifice Plate Type ,

O rifice Plate M aterial In case of Type O FJ , please advise the following.

Ring joint gasket shape , Holder Ring M aterial and special requirem ent, if any.

For the item s necessary for calculation of orifice sizing, differential pressure and flow rate, please refer to


FD-8-3:103 2

：Type OFNon-asbestos sheet gasket 1.5mm or 3.0mm thickness, or spiral wound gasket 4.5mm thickness.

Type OFJRing joint gasket shape : Octagonal or OvalHolder ring material : Pure iron , Soft iron , Alloy steel(F5) , SUS304/316/304L/316L

NutsH

Jack Screw

Stud Bolts

dF

25.4

Type OF -SW type

Q

Y

L

20BO

Number of bolt α8,16,24 45°

12 60°20 54°

FD-8-3:103 2

NutsH

Jack Screw

Stud Bolts

d 25.4

Type OF -S-ON type

Q

Y

L

BO

Number of Bolt α8,16,24 45°

12 60°20 54°

Type OF -WN type


12 60°20 54°

25.4

H

L

θ

Nuts

Stud Bolts

O A

d

Q

YJack Screw

θ:JIS 32.5°:JPI 37.5°:ANSI 37.5°

FD-8-3:103 2

Type OFJ

Jack screw

Nuts

Stud bolts

θ

25.4

25.4

NPS ＜ 6:R0.8NPS ≧ 6:R1.5 23°

O

θ:37.5°

P U

Q

Y

L

sd

A

E


12 60°20 54°dimension

ofgroove

30

φ6

23°Z1Z2 OD

G2

G1

t

TOD

G2

G1

Type OFJ Orifice Flange Assembly

Orifice Plate with Holder Ring

Type O B

O rifice Blocks are used for high tem perature, high pressure

or leaky fluid.

There is a w afer type w hich is easy for application and

change as that of orifice ring, and also, the other type

w hich has higher resistance to leak.

Take out of differential pressure shall be m ade by corner

tap or flange tap.

JIS10K JIS20K JIS30KJPI150 JPI300 JPI600 JPI900ANSI150 ANSI300 ANSI600 ANSI900

50A～500A

：Corner Taps （We can also supply Flange Taps.）

：SUS304 SUS304L SUS316 SUS316L

* Please advise other m aterial you want to use.

Standard for calculation of orifice sizing, differential pressure and flow rate are follows.JIS Z8762-2007, JIS Z8762-1995, JIS Z8762-1969, JIS M8010, ISO 5167:2-2003,AGA REPORT3, ASME FLUID METERS, ASME MFC 3M, ASME PTC19.5* Please advise other code/standard you want to use.

* If you need the sizes of less than 50A or m ore than 500A, please ask us.

For our estim ation or the order to us, please advise the following

Type OＢ , Size , Rating , M aterial , Differential pressure outlet connection , O rifice Type


Please advise the necessary data on "Flow Elem ent Specification" for calculation of orifice sizing, differential

pressure and flow rate, referencing "Necessary item s for flow calculation".

FD-8-3:104 2

：R1/2, NPT1/2, 15A Nipple Butweld end, 15A Nipple plane end, 15A Flanged

：Concentric sharp edge, Quadrant, Eccentric, Segmental

* If you need other rating, please ask us.


FD-8-3:104 2

L

1.6

θ

BW1/2R1/2NPT1/2 SW1/2

15A S-ON FFRF

φsd

T

e

φV

φV

15A WN RF

Type OB （Wafer type）

Type FN, Type FNP

Flow nozzles are suitable for high tem perature, high pressure and large

am ount of the fluid.

A lso, they can be used for the liquid containing a little am ount of

suspended solids without any problem com pared with orifice plates.

C om pared w ith the orifice plate of sam e size and under the sam e

conditions, flow nozzles can be used for 60％ or m ore than that of the

orifice plate having the sam e size.

Also, flow nozzles are m echanically stronger than orifice plates.

In addition to flow nozzle itself, w e can also supply flow nozzle assem blies

having upstream and dow nstream short pipes.

：Flow nozzle pipe assem bly w ith upstream and dow nstream

short pipes

：O nly flow nozzle

W e have m any experiences for m anufacture of low β-ratio throat tap

nozzles to ASM E PTC 6/ PTC 19.5.

FD-8-3:105 2

Flow nozzle pipe assembly

Weld-in-pipe flow nozzle

Flow nozzleFlow nozzle

Flow nozzleBack-up-ring

Flow nozzle

Holding-ring

FNP Holding-ring type FNP Weld-in type

FNP Back-up ring type FNP Back-up ring one body


The standards used for calculation of Flow nozzle sizing and differential pressure are:JIS Z8762-2007, JIS Z8762-1995, JIS Z8762-1969, ISO 5167:3-2003,AGA REPORT3, ASME FLUID METERS, ASME MFC 3M, ASME PTC19.5 .

* Please ask us for those advise other than the above.


Type FN

Type FN , Size , Flow nozzle m aterial , Ring m aterial , Line pipe Inside D ia.

Type FNP

Type FN , Size , Flow nozzle m aterial , Ring m aterial , Line pipe Inside Dia. , Line pipe m aterial ,

C onnection , D ifferential pressure outlet joint

If any of the following item is necessary, please advise.

Applicable regulation, Inspection item s, Special configuration, Special m aterial, etc.

For the item s necessary for calculation of flow nozzle sizing, differential pressure and flow rate, please refer to

"Necessary item s for flow calculation".

FD-8-3:105 2

:50A～650A

：SUS304, SUS316, etc.

：・Holding ring type : Holding ring material shall be the forging similar to pipe material.・Back-up ring type : Back-up ring material shall be the forging similar to pipe material.

* Ring is not necessary for weld-in type.

* For other than the above, please also ask us.

：SW1/2 1/2socket-weld, SW3/4 3/4socket-weld, SW1/2M 1/2nipple plain-end

* For other than the above, please also ask us.

:Butt-welding(BW), Flanged(FLANGE)* For flange connection, please advise the rating of the flange.

* We can also supply other types of the joints than those shown above.

Type VT

C om pared w ith the other throttle type, this has very little pressure-loss, long life, and also, correct m easurem ent

of the flow because of no deposit in the throat portion.

In addition to the above, this type can be applied to various sizes such as sm all size (m achine-finished

one-block) and m edium to large sizes (plate-fabricated).

C onnection to line pipe is m ade by butt-w elding or flange joint.

FD-8-3:106 2

:The standards for calculation of Venturi tube sizing, differential pressure and flow rate areas follows.JIS Z8762-2007, JIS Z8762-1995, JIS Z8762-1969, ISO 5167:4-2003,AGA REPORT3, ASME FLUID METERS, ASME MFC 3M, ASME PTC19.5

* Please advise other code/standard you want to use.


Type VT , Size , M aterial , C onnection , Line pipe inside dia. ,

D ifferential pressure outlet connection

If any of the follow ing item s is necessary, please advise.

Applicable regulation, Inspection item s, Special configuration, Special m aterial, etc.

For the item s necessary for calculation of Venturi tube sizing, differential pressure and flow rate, please refer to


50A～1200A

：SS400, SB410, SF440A, SUS304, SUS316, SUS316L, etc.

* If you need the sizes of less than 50A or more than 1200A, please also ask us.

：SW1/2: 1/2 socket weld , SW3/4: 3/4 socket weld , SW1/2M: 1/2 nipple plane end


：BW: Butt welding, FLANGE: Flange joint* For flange joint, please advise pressure rating of the flange.

* You can ask other connections than the above.


■Venturi tube with Rough-w elded sheet-m etal entrance cone.

■Venturi tube with a m achine-finished entrance cone.

■O ne block m achine finished venturi tube (both ends butt w elding)

FD-8-3:106 2

TYPE RSV

FD-8-3:110 2


RSV- -

②

①

③

④

900

① ② ③ ④

RSV- -1500 ① ② ③ ④

2500

①

③

④

②

M o d e l N o . M a t e r i a l D e s i g n P r e s s u r e D e s i g n T e m p e r a t u r e

C a r b o n s t e e l p i p e - 1 0～ 3 5 0℃

S t a i n l e s s s t e e l p i p e - 1 0～ 4 2 5℃

C a r b o n s t e e l p i p e - 1 0～ 3 5 0℃

S t a i n l e s s s t e e l p i p e - 1 0～ 4 2 5℃

C a r b o n s t e e l - 1 0～ 4 5 0℃

A l l o y s t e e l - 1 0～ 5 5 0℃

C a r b o n s t e e l - 1 0～ 4 5 0℃

A l l o y s t e e l - 1 0～ 5 5 0℃1 7 . 5 M P a

1 0 . 6 M P a

6 . 2 M P a

2 . 9 M P aR S V - 4 0 0

R S V - 9 0 0

R S V - 1 5 0 0

R S V - 2 5 0 0

φ22.2

φ27.7

φ34.5

Seal tape

Weld

Not to betaken off

Rc1/2

Rc3/4

Rc 1

Seal tape

1：SW1/2

2：SW3/4

3：SW 1

4：Rc1/2 Stop Plug

A：Bent Plug R1/25：Rc1/2

6：Rc3/4

7：Rc 1

B：Bent Plug SW1/2

possible todisassemble

After disassembling,this screw sealing

portion shall againbe checked.

400

Type RO

The restriction orifices are used for reducing fluid pressure and are designed som ew hat different from the

orifice plates that are used for m easuring flow rates.

There are som e types of restriction orifices, including a single plate with a single hole, a single perforated plate

(having diffused holes), and a set of w elded m ulti orifices (a m ultistage orifice) w hich are used for high-pressure

high-tem perature fluids.

The bore edge of the restriction orifices can be surface-hardened with stellite w elding or by nitriding.

FD-8-3:111 2

■M ultistage O rifice (W elded Type)

■M ultistage O rifice (Fit-in-Pipe Type) ■M ulti holes plate

Type O M R

O rifice m eter runs are used for m easuring the flow at higher accuracy.

The orifice m eter runs are therefore, not the ones sim ply w eld pipes to upstream and dow nstream sides of a

orifice assem bly, but the ones w elding sm aller inside diam eter pipes to sm aller diam eter of flanges, then, finish

inside diam eter of the pipe/flange assem bly by boring or honing to the specified dim ensions and w ithin the

required tolerances and surface roughness.

FD-8-3:112 2

■O rifice m eter run (both sides flanged)

Flow

Flow

■O rifice m eter run (Butt w elding ends)

サイジング計算、差圧計算、流量計算には各製品で御指定いただく項目の他に下記の項目が必要です。

計算規格Calculation Standard

計算に使用する規格を御指定ください御指示の無い場合は製品による当社標準規格で計算します右記以外の規格についても対応可能ですのでお問い合わせください

JIS Z8762ISO 5167ASME

差圧取出方式Type of Pressure Tap

OP型をご用命の際は御指定ください

ベナータップフランジタップコーナータップD･D/2タップパイプタップ

流体Type of Fluid

測定流体の種類を御指定ください水蒸気（飽和・過熱）気体

管材質Pipe Material

取付管路の材質を御指定ください例）STPT370、SUS304TP、SGP

口径と管sch./管内径Pipe Size and Sch. No./Pipe Inside Dia.

取付管路の口径と管スケジュールまたは管内径値を御指定ください

例)100A sch.40または102.3mm

最大目盛流量Scale Range

計器目盛の最大値流量を御指定ください単位も必ず御指定ください体積流量(l/hやm3/h等）で御指定の場合、基準状態、標準状態、運転状態のいずれであるかも御指定ください

常用流量Normal Flow Rate

常用流量値を御指定ください御指示の無い場合は最大目盛流量の80%を常用流量として計算します

差圧（最大目盛流量時）Diffrential Pressure

最大設定差圧を御指定ください御指示の無い場合は適切な差圧を当社にて決定します単位も必ず御指定ください

例）25kPa、2500mmH2O

流体の常用圧力Operating Pressureof Fluid

流体の運転圧力を御指定ください例）0.5MPa G

流体の常用温度Operating Temperatureof Fluid

流体の運転温度を御指定ください例）20℃

比重または密度Specific Gravityor Density

液体流体の比重または密度を御指示ください流量を基準状態の体積流量でご指定の場合、基準状態での値も御指示ください

気体流体の密度、比重、分子量（MW）を御指示ください気体物性が明確な場合、流体の組成％でも御指示いただけます。（当社資料より算出します）

水、蒸気の場合は当社にて、常用圧力、常用温度時の密度を蒸気表より求めることもできます

特殊な流体に関しては必ず御指示ください

例）液体運転状態の体積流量または重量による流量指定の場合比重:1.0または1000kg/m3

基準状態の体積流量基準状態 1000kg/m3運転状態 900kg/m3

例）気体比重：1.0または1.2928kg/m3(N)

粘度Viscosity

流体の粘度を御指示ください当社資料により算出することも可能です特殊な流体に関しては必ず御指示ください

例）1.0 mPa･s

比熱比Ratio of Specific Heats

気体の場合は比熱比を御指示ください当社資料により算出することも可能です特殊な流体に関しては必ず御指示ください

例）1.3

圧縮係数Compressibility Factor

気体の場合は圧縮係数を御指示ください当社資料により算出することも可能です特殊な流体に関しては必ず御指示ください

例）0.999

相対湿度湿り気体の場合は相対湿度を御指示ください例）20% 40℃時

流体の流れ方向Flow Direction

流れ方向を御指定ください例)垂直、水平

例)液体kg/h 、t/hm3/h、l/h at Base Cond.M3/h、l/h at Ope. Cond.

例)気体m3/h(N)、m3/h、kg/h

流量計算必要事項

FD-8-3:007 2

フローエレメント仕様書/FLO W ELEM EN T SPEC IFIC ATIO N SH EET

①

②

③

④

基準状態atbase cond.(15℃)使用状態atO perating C ond.

蒸気Steam

モルウェイトM W標準状態atStandard C ond.使用状態atO perating C ond.

① J:JIS A:ASME D:DIN I:ISO B:BS S:SPINK② F:フランジ/Flange Tap C:コーナー/Corner Tap R:D･D/2 ／D･D/2 Tap P:パイプ/Pipe Tap③ OP:オリフィスプレート/Orifice Plate OF:オリフィスフランジ/Orifice Flange OR:オリフィスリング/Orifice Ring

OB:オリフィスブロック/Orifice Block FN:フローノズル/Flow NozzleFNP:フローノズル短管ASS'Y/Flow Nozzle Pipe Ass'Y VT:ベンチュリー/Venturi

④ C:同心円/Concentric Q:四分円/Quarter Circle E:偏心/Eccentric S:欠円/Segmental

顧客名Client

日付Date

項目 /Item

Tag No.

管材質Pipe M aterial口径とsch.NO .(管内径)Pipe Size and Sch.(inside dia.)接続取合いConnection

型式 Type

数量 /Q uantity

計算規格Calculation Standard差圧取出方式Type ofpressure tap

流体Type offluid

差圧取出し部取り合いTap C onnection

規格および圧力定格Flange rating差圧(最大目盛流量時)DifferentialPressure常用圧力O perating Pressure

液体Liquid

プレートタイプO rifice plate type最大目盛流量Scale range常用流量Norm alflow rate最小流量M inim um flow rate

ニップル /NIPPLE

フローノズル /FLO W NO ZZLE

気体G as

密度Density

常用温度O perating Tem perature

粘度 /Viscosity

ボス /BO SS

ベンチュリー /VENTURI

比熱比 / CP/C V

圧縮係数 /Z

相対湿度％ ℃時 /RH ％ at ℃

材質M ATERIAL

オリフィスプレート /O RIFIC E PLATE

フランジ、リング /FLANG E 、RING

ボルト、ナット /BO LT、NUT

ガスケット /G ASKET

FD-8-3:008 2

FD-8-3:113 2

■M aterials and C orrosion

○：Suitable ×：Not Suitable △：Lim itebly applicable 30：Applicable for 30℃ and less tem p.

Notes: 1. O ne m aterial, defined resistive, m ay not be resistive when used in com bination with other m aterial(s).

2. Note that the m aterials, particularly nonm etallic ones, have their own critical tem perature and pressure.

SUS SUS

304 316

Sulfurous Acid G as SO 2 × △ × × ○ ○ △ × × × ○ ○ ○ ○ ○ ○ ○

Am m onia N H 3 △ ○ △ ○ ○ ○ × × × ○ × ○ ○ ○ ○

Hydrochloric H C l 0～5 % × × × × × 70 20 × 70 × × × ○ ○ ○ ○ ○ ○ ○

5～20 × × × × × 70 20 × × × × × ○ ○ ○ ○ ○ ○ ○

20＜ × × × × × 70 × × × × × × ○ ○ ○ ○ ○ ○ ○

Chlorine Cｌ2 D R Y ○ ○ ○ ○ ○ ○ ○ ○ × × × ○ △

W ET × × × × ○ ○ ○ × × × × ○ △

Sea W ater × △ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

NaO H 0～10 % × 100 100 × ○ ○ ○ ○ ○ × × × × × ○ ○ ○

10～30 × 100 100 × ○ ○ ○ ○ ○ × × × ○ × × ○ ○ ○

30～50 × 100 100 × ○ ○ ○ 30 ○ × × × ○ × × ○ ○ ○

50～70 × 100 100 × ○ ○ × × × × × ○ ○ ○

70＜ × × × × × ○ 180 ○ × × × ○ ○ ○

Acetic Acid C H 3C O 2H ＜75 % × × × ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ 65 ○ ○

75＜ × × × ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

Nitric Acid H N O 3 0～20 % × ○ ○ ○ × × × ○ × × ○ ○ ○

20～70 × ○ ○ ○ × × × ○ × × × ○ ○

70～95 × 30 30 ○ × × × ○ × × × ○ ○

95＜ × ○ × × × ○ × × × ○ ○

Brom ine B r2 × × × × ○ ○ × ○ × ○

Naphtha ○ ○ ○ ○ ○ ○ ○

Fluoric Acid H F 0～40 % × × × × ○ ○ ○ × ○ × ○ 60 ○ ○

40～60 × × × × 140 ○ ○ × ○ × ○ ○

60～80 × × × × ○ ○ × × × × ○ ○

80＜ × × × × ○ ○ × × × × ○ ○

H 3PO 4 0～5 % × × × ○ × × × × ○ ○ ○ ○ ○ ○ ○

5～25 × × × ○ × × × × ○ ○ ○ ○ ○ ○ ○

25～50 × × × ○ × × × × ○ ○ ○ ○ ○ ○ ○

50～85 × × × ○ × × × × ○ × ○ ○ 45 ○ ○

Surfuric Acid H 2SO 4 0～10 % × × × △ × × × × × ○ ○ ○ ○ ○ ○ ○

10～60 × × × △ × × × × × ○ ○ ○ ○ ○ ○ ○

60～75 × × × ○ × × × × × ○ △ ○ ○ ○

75～95 × × × ○ × × × × × ○ × ○ ○ ○

95＜ × × × ○ × × × × × ○ × ○ ○ ○

Hydrogen Sulfide H 2S × △ △ ○ ○ ○ ○ ○ △ ○ △

Caustic

Soda

Phosphoric

A cid

Fluids

M aterialsM etal

Carbon

Steel

HighSiliconSteel

Monel

Hastello

yB

HastelloyC

Titan

ium

Nickel

Copp

er

Coppe

rAlloy

Tantalam

Steinless

Steel

Carpenter20

N on-m etal

HardP.V.C.

Phe

nol

Resin

Epox

yResin

Polyethylene

TetrafluorideResin

TrifluorideRes

in

フローエンジニアリング株式会社

FLOW ENGINEERING CO.,LTD.

〒221-0835 横浜市神奈川区鶴屋町2-13-2 横浜スクウェアビル4･5FYokohama Square Bldg.4･5F 2-13-2, Tsuruyacho,Kanagawa-kuYokohama-City, Kanagawa Pref. Japan.

TEL.045-314-5718 FAX.045-312-2717http://www.floweng.co.jp

flow element · 2017. 3. 1. · orifice plate オリフィス ... ring having pressure outlet...

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