R-100 Series GLASS TUBE FLOWMETER

TG-F2369-E02

TOKYO KEISO CO., LTD.

3

CAPACITY RATING

❏

For liquid measurement

❏

For gas measurement

Meter size

Stainless

steel oat

PVC,

PTFE oat

10

15

20

25

40 (B)

40 (A)

50

65

80

100

Water ow [L/h]

9 to 120

410

1040

1750

2500

4400

9100

12100

21000

52000

30 to 55

230

700

1100

1650

3000

6400

9200

15300

42800

10

15

20

25

40 (B)

40 (A)

50

65

80

100

Air ow [m3/h (nor)]

Stainless

steel oat

Aluminum

oat

PTFE

oat

Not available

Not available

Not available

Not available

0.16 to 1.6

6

18

30

41

78

160

220

360

820

0.15 to 1.4

5.4

15

24

43

86

150

180

340

980

9.7 to 30

51

71

130

270

350

Meter size

35

30

25

20

15

10

5

1

10

50

100

500 1,000

5,000 10,000

50,000 (ℓh)

Viscosity curve

R-100

Viscosity

[mPa·s]

PROCESS CONNECTIONS FOR EACH SIZE

10

15

20

25

40

50

65

80

100

Meter

size

JIS 5K Flange

10

15

20

25

Meter

size

Rc

10

15

20

25

40

50

65

80

100

Meter

size

JIS 10K Flange

10A 15A 20A 25A 40A 50A 65A 80A 100A

10A 15A 20A 25A 40A 50A 65A 80A 100A

1/4 3/8 1/2 3/4

1

*1

*1

*1 20A and 25A are not available for meter size 40mm (2).

LIMITATION OF FLUID VISCOSITY

Refer to the following figure in case of measurement of high viscosity

liquid. If the viscosity of liquids is lower than the viscosity curve on

the viscosity vs. flow rate graph below, flowmeters are manufactured

as a standard procedure. The flow rate tables in this TECHNICAL

GUIDANCE can be referred to only by density compensation. If the

viscosity is above the curve, contact Tokyo Keiso for detailed investi-

gation by our factory computer.

FLOW RATE COMPENSATION CALCULATION

ＱＷ

Ｑ

ρ

ρｆ

ｈ

Ｌ

　

）

（

）

（

　

－ρ）

（ρ

）

－

ρ（ρ

Ｑ

　

　

ｆ

ｆ

Ｗ

/

1.219

1.4

-

7.9

1

-

7.9

1.4

1219

1000

1000

1

1000

ｐ

ｔ）

ρ（

Ｑ

Ｑ

Ａ

0.1013

273

0.0169

ＱＡ

Ｑ

ρ

ｐ

ｔ

54.22 m3/h（nor）

32.08

0.0169

0.5

0.1013

40

273

1.977

0.0169

）

（

Ｑ

Ａ

100

100

－ρ）

（ρ

）

－

ρ（ρ

Ｑ

Ｑ

ｆ

ｆ

Ｗ

1

Liquid measurement applicarions

Gas measurement application

：Conversion coefficient

：Density of liquid to be measured [g/cm3]

：Density of water [g/cm3]

：Density of float [g/cm3] (Refer to Float density table below)

SUS 304,316

MA276 (Equivalent to Hastelloy C)

MA-B (Equivalent to Hastelloy C)

Titanium

7.9

8.94

9.24

4.5

Calculation example

Density of liquid 1.4g/cm3

SUS316 float (7.9g/cm3)

Full scale 1000 L/h

：Air converted flow rate [m3/h (nor)]

：Flow rate of actual gas [m3/h (nor)]

：Density of actual gas [kg/m3 (nor)]

：Operating pressure [MPa]

：Operating temperature [℃]

Calculation example

CO2 gas 1.977kg/m3 (nor), Op.press. 0.5MPa, Op.temp. 40°C,

Full scale 100m3/h (nor)

In this TECHNICAL GUIDANCE flow rate tables are indicated by flow rate of water (Density 1.0g/cm3, Viscosity 1.0mPa·s) and by flow rate of

air (0°C, 1 atm). Thus, in case the actual operating condition differs from them, the following compensation calculation is required to obtain

flow rate in such condition and then, tables are referred for size selection.

Flowmeters with stainless steel floats may suffer from

hunting at fluid pressures below 0.1 MPa.