Products

flow meter

EFTN target flow meter
EFTN target flow meter
Summary
EFTN target flow meter is flow measuring meter designed by ourselves, we all select large scale integrated circuit and device manufactured by famous chip manufacturer in the world such as TI company,AD company and MAX company, use Embedded Workbench compiling environment of IAR company to compile reliable EFTN working procedure. EFTN can be used for measuring flow of liquid,gas and steam, and convert it to analog output signal of 4-20mA. Not only have they the character of no moving part such as orifice plate and vortex street, but also have perfect accuracy that can be compared with the precision of volume meter. Meanwhile, they have features of anti-interference, dirty resistance proof, simpleness with good reliability. They can be widely used in petroleum, chemical, energy, food, environment protection and water conservancy, etc.
  • Operating Principle
  • Technical Parameter
  • Model Selection Table
  • Outline and installation
  • Ordering information
EFTN target flow meter is composed of measuring chamber,force-summing element( target),sensing element(force sensor, temperature sensor),transition parts( increase or decrease according to temperature and pressure changes),calculation display and output part.
When fluid is flowing in measuring pipe, moment of force is generated by autologous kinetic energy and baffles (target), its acting force is directly proportional to the square of the medium velocity. The mathematical expression as follows:
 F=CDAρU2/2
In form:F——resistance force on target
CD——object resistance coefficient
ρ——medium density in application
U——medium average velocity in measuring pipe
A——target axial projected area of measuring pipe
1. Main parameters
Have great high sensitivity. can measure extremely slow flow rate, even 0.8m/s
Measuring accurately, the accuracy is 0.5、1.0、1.5、2.5 class
Nominal diameter: 15-1200mm
Nominal pressure: ≤42.0MPa
Operating temperature: -196℃ ~ +450℃
Measuring medium: liquid,gas,steam
Have large measuring range, max. range is 1:10
Have excellent repeatability. The general repeatability is 0.1%
Have small pressure loss. The pressure loss is only about half of one with throttle orifice plate.
Compensation function: with temperature and pressure compensation
You can use dry calibration method, that is hanging weight method.
The measuring range can be changed by changing size of target plate according to actual requirement.
Display in field and through remote communication
Explosion-proof: intrinsically safe type (ExiaⅡCT2~T6) 
                   Explosion isolation type(ExdⅡCT2~T6)
Protection class: IP 67
2. Structure
1.measuring chamber  2.transition parts  3. integrating、display、output parts  4.junction box

Double clip type(A type)      plug-in type(C type)           online plug type(D type)
<table border="0" cellpadding="0" cellspacing="0" class="ttable" width="600">
    <tbody>
        <tr>
            <td style="text-align: center">model</td>
            <td colspan="9" style="text-align: center; width: 380px; height: 20px">code</td>
            <td style="text-align: center">content</td>
        </tr>
        <tr>
            <td>EFTN-</td>
            <td colspan="9" style="width: 380px; height: 19px"> </td>
            <td> EFTN target flow meter</td>
        </tr>
        <tr>
            <td rowspan="38"> </td>
            <td style="text-align: center">1</td>
            <td colspan="8"> </td>
            <td>2.0MPa(class 150)</td>
        </tr>
        <tr>
            <td style="text-align: center">2</td>
            <td colspan="8"> </td>
            <td>2.5Mpa</td>
        </tr>
        <tr>
            <td style="text-align: center">3</td>
            <td colspan="8"> </td>
            <td>4.0MPa</td>
        </tr>
        <tr>
            <td style="text-align: center">4</td>
            <td colspan="8"> </td>
            <td>6.3Mpa(class300)</td>
        </tr>
        <tr>
            <td style="text-align: center">5</td>
            <td colspan="8"> </td>
            <td>10.0Mpa (class 600)</td>
        </tr>
        <tr>
            <td style="text-align: center">6</td>
            <td colspan="8"> </td>
            <td>16.0Mpa(class900)</td>
        </tr>
        <tr>
            <td style="text-align: center">7</td>
            <td colspan="8"> </td>
            <td>25.0Mpa(class1500)</td>
        </tr>
        <tr>
            <td style="text-align: center">8</td>
            <td colspan="8"> </td>
            <td>32.0Mpa</td>
        </tr>
        <tr>
            <td style="text-align: center">9</td>
            <td colspan="8"> </td>
            <td>42.0Mpa(class2500)</td>
        </tr>
        <tr>
            <td style="text-align: center">0</td>
            <td colspan="8"> </td>
            <td>others</td>
        </tr>
        <tr>
            <td rowspan="28"> </td>
            <td style="text-align: center">015</td>
            <td colspan="7"> </td>
            <td>DN15</td>
        </tr>
        <tr>
            <td style="text-align: center">020</td>
            <td colspan="7"> </td>
            <td>DN20</td>
        </tr>
        <tr>
            <td style="text-align: center">025</td>
            <td colspan="7"> </td>
            <td>DN25</td>
        </tr>
        <tr>
            <td style="text-align: center">040</td>
            <td colspan="7"> </td>
            <td>DN40</td>
        </tr>
        <tr>
            <td style="text-align: center">050</td>
            <td colspan="7"> </td>
            <td>DN50</td>
        </tr>
        <tr>
            <td style="text-align: center">080</td>
            <td colspan="7"> </td>
            <td>DN80</td>
        </tr>
        <tr>
            <td style="text-align: center">100</td>
            <td colspan="7"> </td>
            <td>DN100</td>
        </tr>
        <tr>
            <td style="text-align: center">150</td>
            <td colspan="7"> </td>
            <td>DN150</td>
        </tr>
        <tr>
            <td style="text-align: center">200</td>
            <td colspan="7"> </td>
            <td>DN200</td>
        </tr>
        <tr>
            <td style="text-align: center">&hellip;</td>
            <td colspan="7">&nbsp;</td>
            <td>&nbsp;</td>
        </tr>
        <tr>
            <td rowspan="18"> </td>
            <td style="text-align: center">A</td>
            <td colspan="6"> </td>
            <td>Double clip type</td>
        </tr>
        <tr>
            <td style="text-align: center">B</td>
            <td colspan="6"> </td>
            <td>Straight pipe type</td>
        </tr>
        <tr>
            <td style="text-align: center">C50</td>
            <td colspan="6"> </td>
            <td>Plug-in type DN50</td>
        </tr>
        <tr>
            <td style="text-align: center">C100</td>
            <td colspan="6">&nbsp;</td>
            <td>插Plug-in type DN100</td>
        </tr>
        <tr>
            <td style="text-align: center">D50</td>
            <td colspan="6"> </td>
            <td>Online plug type DN50</td>
        </tr>
        <tr>
            <td style="text-align: center">D100</td>
            <td colspan="6">&nbsp;</td>
            <td>Online plug type DN100</td>
        </tr>
        <tr>
            <td rowspan="12"> </td>
            <td style="text-align: center">/</td>
            <td colspan="5"> </td>
            <td> </td>
        </tr>
        <tr>
            <td rowspan="11"> </td>
            <td style="text-align: center">i</td>
            <td colspan="4"> </td>
            <td>Intrinsically safe type</td>
        </tr>
        <tr>
            <td style="text-align: center">d</td>
            <td colspan="4"> </td>
            <td>Explosion isolation type</td>
        </tr>
        <tr>
            <td rowspan="9"> </td>
            <td style="text-align: center">T</td>
            <td colspan="3"> </td>
            <td>Measuring chamber material: carbon steel</td>
        </tr>
        <tr>
            <td style="text-align: center">H</td>
            <td colspan="3"> </td>
            <td>Measuring chamber material: 304 316L</td>
        </tr>
        <tr>
            <td style="text-align: center">E</td>
            <td colspan="3"> </td>
            <td>Measuring chamber material: others</td>
        </tr>
        <tr>
            <td rowspan="6"> </td>
            <td style="text-align: center">D</td>
            <td colspan="2"> </td>
            <td>-20~+100℃</td>
        </tr>
        <tr>
            <td style="text-align: center">E</td>
            <td colspan="2"> </td>
            <td>+100~+250℃</td>
        </tr>
        <tr>
            <td style="text-align: center">G</td>
            <td colspan="2"> </td>
            <td>+250~+450℃</td>
        </tr>
        <tr>
            <td style="text-align: center">L</td>
            <td colspan="2"> </td>
            <td>-196~-20℃</td>
        </tr>
        <tr>
            <td rowspan="2">&nbsp;</td>
            <td style="text-align: center">Y</td>
            <td>&nbsp;</td>
            <td>Integrated</td>
        </tr>
        <tr>
            <td style="text-align: center">F</td>
            <td>&nbsp;</td>
            <td>Split-type</td>
        </tr>
        <tr>
            <td style="text-align: center">&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
        </tr>
    </tbody>
</table>

<div><br />
Model selection example:<br />
EFTN-2050A/iTDY is flexible target flow meter, nominal pressure is 4.0MPa, nominal diameter is DN50, double clip type, intrinsically safe type, measuring chamber material is carbon steel, medium temperature&lt;+100℃, integrated type.</div>

<div>&nbsp;</div>
1. Double clip type, straight pipe type
Figure 2 double clip type(A type)  figure 3 straight pipe type(B type)   figure 4 B type high temperature
Outline dimensional drawing of A type and B type 

公称通径

直管段测量室L

环形测量室M

第1系列

第2系列

DN15

200

 

60

DN20

200

 

60

DN25

200

250

60

DN32

200

250

60

DN40

200

280

70

DN50

200

300

70

DN65

200

300

70

DN80

250

350

70

DN100

250

400

90

DN125

250

400

90

DN150

300

500

110

DN200

350

600

120

DN250

350

600

120

DN300

400

600

120


2 插入式(C型)、在线插拔式(D型)、分体式(F型)外形尺寸
图5是插入式的安装图,连接法兰有DN50和DN100两种规格(如有特殊安装要求,提前说明)
图6是在线插拔式的安装图,连接法兰有DN50和DN100两种规格,切断阀为球阀。
图7是工艺短管、连接法兰现场焊接图(如有特殊安装要求,提前说明)
2. Boundary dimension of plug-in type(C type)、plug-in type(D type)、split type(F type) 
Installation drawing of plug-in type as shown in figure 5, there are DN50 and DN 100 specifications of connecting flange. (If you have special installation requirement, please tell us in advance.)
Installation drawing of online plug type as shown in figure 6, there are DN50 and DN100 specifications of connecting flange, cut-off valve is ball vlave.
Welding drawing of process short pipe and connecting flange as shown in figure 7. (If you have special installation requirement, please tell us in advance.)
EFTN target flow meter is suitable for many occasions and measuring many mediums. To ensure you have satisfied effects in use, we suggest you should notice the following items when selecting model.
1)Make sure frequently-used flow needed, and ensure the max.flow according to 1.5to 2.5 times of frequently-used flow.
2)Point out the installing flange standard, sealing type, especially the requirement for special installation, please tell us clearly.
3)When customers ordering the goods, please point out the mediums of measuring fluid and their densities.
4)For servicing and using the meter conveniently, both sides of the meter should be installed by-pass pipe. If there is no by-pass pipe, we suggest selecting online plug-in type target flow meter.
5)If you need to measure special fluid, in addition to selecting measuring pipe material is provided by company, you can recommend the measuring pipe material needed directly. 

Attached table 1: Flow range table
Attached table 1 current measuring range in standard conditions table
 

Diameter of flow meter(mm)

Measuring range of flow meter(m3/h)

Target diameter ratio range

Max.press. lossΔPmax(Kpa)

βmax

βmax

15(1/2″)

0.1~3

0.8

0.6

96.4

20(3/4″)

0.17~5

0.8

0.6

55.12

25(1″)

0.3~9

0.8

0.6

34.45

32(11/2″)

0.5~14

0.8

0.6

24.12

40(13/4″)

1.0~24

0.8

0.5

17.23

50(2″)

1.5~40

0.8

0.5

6.89

65

2.5~60

0.7

0.4

5.51

80

3.5~90

0.7

0.4

4.31

100

5~140

0.7

0.4

2.76

125

6~200

0.7

0.4

2.07

150

10~300

0.6

0.3

1.38

200

18~560

0.6

0.3

0.89

250

25~800

0.5

0.3

0.56

300

40~1200

0.5

0.25

0.35

350

50~1500

0.5

0.25

0.10

400

65~2000

0.5

0.25

0.07

450

90~2600

0.4

0.25

0.06

500

110~3300

0.4

0.2

0.05

550

140~4100

0.35

0.2

0.04

600

170~5000

0.3

0.2

0.03

700

230~6800

0.3

0.2

0.011

800

300~9000

0.3

0.2

0.0083

900

370~11000

0.3

0.2

0.0062

1000

470~14000

0.2

0.1

0.0055

1100

560~16000

0.2

0.1

0.0041

1200

670~20000

0.2

0.1

0.0034

1300

780~23000

0.2

0.1

0.0028

1400

900~27000

0.2

0.1

0.0028

1500

1050~31000

0.2

0.1

0.0021


Attached table 2  Saturated steam flow measuring range under the pressure of operating condition table

Nominal diametermm

Measuring range t/h

0.1MPa

0.2MPa

0.3MPa

0.4MPa

0.5MPa

0.6MPa

0.8MPa

1.0MPa

1.5MPa

2.0MPa

15

0.002
~ 0.02

0.003
~ 0.06

0.005
~ 0.05

0.007
~ 0.07

0.008
~ 0.08

0.009
~ 0.09

0.012
~ 0.12

0.015
~ 0.15

0.023
~ 0.23

0.03
~ 0.3

20

0.003
~0.03

0.006
~0.06

0.009
~0.09

0.012
~0.12

0.015
~0.15

0.017
~0.17

0.022
~0.22

0.028
~0.28

0.04
~0.4

0.055
~0.55

25

0.005
~0.05

0.009
~0.09

0.014
~0.14

0.019
~0.19

0.02
~0.2

0.027
~0.27

0.035
~0.35

0.044
~0.4

0.065
~0.65

0.085
~0.85

32

0.008
~0.08

0.016
~0.16

0.023
~0.23

0.032
~0.32

0.036
~0.36

0.044
~0.44

0.056
~0.56

0.072
~0.72

0.1
~1.0

0.14
~1.4

40

0.012
~0.12

0.026
~0.25

0.036
~0.36

0.045

~0.45

0.058
~0.58

0.069
~0.69

0.09
~0.9

0.11
~1.1

0.16

~1.6

0.22
~2.2

50

0.02
~0.2

0.038
~0.38

0.057
~0.57

0.075
~0.75

0.09
~0.9

0.1
~1.0

0.14
~1.4

0.17
~1.4

0.25
~2.6

0.34
~3.4

65

0.035
~0.35

0.065
~0.65

0.1
~1.0

0.13
~1.3

0.15
~1.5

0.18
~1.8

0.24
~2.4

0.29
~2.9

0.44
~4.4

0.58
~5.8

80

0.05
~0.5

0.1
~1.0

0.15
~1.5

0.18
~1.8

0.23
~2.3

0.27
~2.7

0.36
~3.6

0.45
~4.5

0.65
~6.5

0.88
~8.8

100

0.08
~0.8

0.15
~1.5

0.23
~2.3

0.28
~2.8

0.36
~3.6

0.42
~4.2

0.56
~5.6

0.7
~7.0

1.0
~10

1.3
~13

125

0.12
~1.2

0.24
~2.4

0.35
~3.5

0.48
~4.8

0.56
~5.6

0.68
~6.8

0.89
~8.9

1.1
~11

1.6
~16

2.1
~21

150

0.18
~1.8

0.35
~3.5

0.5
~5.0

0.7
~7.0

0.82
~8.2

0.96
~9.6

1.2
~12

1.5
~15

2.3
~23

3.1
~31

200

0.32
~3.2

0.6
~6.0

0.9
~9.0

1.2
~12

1.4
~14

1.7
~17

2.2
~22

2.8
~28

4.1
~41

5.5
~55

250

0.5
~5.0

1.0
~10

1.4
~14

1.9
~19

2.2
~22

2.7
~27

3.5
~35

4.4
~44

6.5
~65

8.6
~86

300

0.7
~7.0

0.14
~1.4

2.0
~20

2.5
~25

3.3
~33

3.9
~39

5
~50

6.2
~62

9.2
~92

12
~120

350

1
~10.0

1.9
~19

2.8
~28

3.5
~35

4.4
~44

5.2
~52

7
~70

8.5
~85

12
~120

27
~270

400

1.3
~13

2.5
~25

3.6
~36

4.7
~47

5.8
~58

6.8
~68

9
~90

11
~110

16
~160

22
~220

450

1.6
~16

3.1
~31

4.6
~46

6.0
~60

7.4
~74

8.6
~86

11
~110

14
~140

21
~120

27
~270

500

1.6
~16

3.8
~38

5.6
~56

7.0
~70

9.1
~91

10
~100

14
~140

17
~170

26
~260

34
~340

550

2.5
~25

4.7
~47

6.8
~68

9.0
~90

11
~110

13
~130

17
~170

20
~200

31
~310

41
~410

600

3
~30

3.6
~36

8.2
~82

10
~100

13
~130

15
~150

20
~200

25
~250

37
~370

49
~490


Attached table 3  standard dry air flow range of working condition table

Nominal diameter mm

Measuring range NM3/H

0.01 MPa

0.1 MPa

0.2 MPa

0.3 MPa

0.4 MPa

0.6 MPa

0.8 MPa

1.0 MPa

2.0 MPa

4.0 MPa

15

2~20

4~40

6~60

8~80

10~100

14~140

18~180

22~220

42~420

82~820

20

3~30

6~60

9~90

12~120

15~150

21~210

27~270

33~330

63~630

123~1230

25

5~50

10~100

15~150

20~200

25~250

35~350

45~450

55~550

105~1050

205~2050

32

8~80

16~160

24~240

32~320

40~400

56~560

72~720

88~880

168~1680

328~3280

40

13~130

26~260

39~390

42~420

65~650

91~910

117~1170

143~1430

273~2730

533~5330

50

13~130

40~400

60~600

80~800

100~1000

140~1400

180~1800

220~2200

420~4200

820~8200

80

50~500

100~1000

150~1500

200~2000

250~2500

350~3500

450~4500

550~5500

1050~10500

2050~20500

100

80~800

160~1600

240~2400

320~3200

400~4000

560~5600

720~7200

880~8800

1680~16800

3280~32800

150

180~1800

360~3600

540~5400

720~7200

900~9000

1260~12600

1620~16200

1980~19800

3780~37800

7380~73800

200

300~3000

600~6000

900~9000

1200~12000

1500~15000

2100~21000

2700~27000

3300~33000

6300~63000

12300~123000

250

500~5000

1000~10000

1500~15000

2000~20000

2500~25000

3500~35000

4500~45000

5500~55000

10500~105000

20500~205000

300

750~7500

1500~15000

2250~22500

3000~30000

3750~37500

5250~52500

6750~67500

8250~82500

15750~157500

30750~307500

350

1000~10000

2000~20000

3000~30000

4000~40000

5000~50000

7000~70000

9000~90000

11000~110000

21000~210000

41000~410000

400

1300~13000

2600~26000

3900~39000

4200~42000

6500~65000

9100~91000

11700~117000

14300~1430000

27300~273000

53300~533000

450

1700~17000

3400~34000

5100~51000

6000~60000

8500~85000

11900~119000

15300~153000

18700~187000

35700~357000

69700~697000

500

2000~20000

4000~40000

6000~60000

8000~80000

10000~100000

14000~140000

18000~180000

22000~220000

42000~420000

82000~820000

550

2500~25000

5000~50000

7500~75000

10000~100000

12500~125000

17500~175000

22500~225000

27500~275000

52500~525000

102500~1025000

600

3000~30000

6000~60000

9000~90000

12000~120000

15000~150000

21000~210000

25000~250000

33000~330000

63000~630000

123000~1230000

700

4000~40000

8000~80000

12000~1200000

16000~160000

20000~200000

28000~280000

36000~360000

44000~440000

84000~840000

164000~1640000

800

5000~50000

10000~100000

15000~150000

20000~200000

25000~250000

35000~350000

45000~450000

55000~550000

95000~950000

205000~2050000

900

6500~65000

13000~130000

19500~195000

26000~260000

32500~325000

45500~455000

58500~585000

71500~715000

136500~1365000

266500~2665000

1000

8000~80000

16000~160000

24000~240000

32000~320000

40000~400000

56000~560000

72000~720000

88000~880000

168000~1680000

328000~3280000


Note: In the table , air temperature is 20℃, absolute pressure is 0.101MPa under standard air flow range. Main connection and outline dimension of product.