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32 si unit – Toshiba GF632 User Manual

Page 45

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- 44 -

6F8A0883

To select the meter size: See Figure 9.2 and find meter sizes within the velocity of 0.1 to 10 m/s for a specified

full-scale (measuring range high limit) flow. Select one that has its full-scale velocity
between 1 and 3 m/s.

Make sure the full-scale flow rate used for the final planning stage stays

within 10 m/s in terms of flow velocity.

10

-2

10

-1

1

10

1

10

2

10

3

10

4

15

25

40

50

65

80

100

150

200

250

300

350
400

450

mm

10

1

0.3

0.1


(m/s)

流量〔 m

3

/ h〕

Figure 9.2 Flow volume

Flow volume

Flow velocity range

Meter size

0.1m/s 0.3m/s 1m/s 10m/s

15mm

1/2”

0.06361(m

3

/h)

0.1908(m

3

/h)

0.6361(m

3

/h) 6.361(m

3

/h)

25mm

1”

0.1767

0.5301

1.767

17.67

32mm

1 1/4”

0.2895

0.8686

2.895

28.95

40mm

1 1/2”

0.4523

1.357

4.523

45.23

50mm

2”

0.7067

2.120

7.067

70.67

65mm

2 1/2”

1.195

3.583

11.95

119.5

80mm

3”

1.809

5.428

18.09

180.9

100mm

4”

2.827

8.482

28.27

282.7

125mm

5”

4.417 13.25 44.17 441.7

150mm

6”

6.361

19.08

63.61

636.1

200mm

8”

11.31

33.93

113.1

1131

250mm

10”

17.67

53.01

176.7

1767

300mm

12”

25.45

76.34

254.5

2545

350mm

14”

34.64

103.9

346.4

3464

400mm

16”

45.23

135.7

452.3

4523

450mm

18”

57.25

171.7

572.5

5725

500mm 20”

- 212.1

706.9

7069

600mm 24”

- 305.4 1018

10180

Flow volume (m

3

/h)

Flow velocity (m/s)

32

SI Unit

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