MODEL CODE

Model code

Description

W-20

□ □ - □ □ - □ □ □ □ - □

Output

2

Pulse output: Open collector / Open drain

3

Current output: 4 to 20 mA DC

4

Voltage output: 0 to 5 VDC

5

Voltage output: 0 to 10 VDC

Range of flow rate

Connection size

2

0.5 to 3 L/min (Flow path nozzle

Ф3.0)

Rc 3/8

3

0.7 to 5 L/min (Flow path nozzle

Ф4.0)

4

1 to 10 L/min (Flow path nozzle

Ф6.4)

5

2 to 20 L/min (Flow path nozzle

Ф10)

6

3 to 30 L/min (Flow path nozzle

Ф12)

Rc 1/2

7

4 to 40 L/min (Flow path nozzle

Ф14)

8

5 to 50 L/min (Flow path nozzle

Ф16)

9

6 to 60 L/min (Flow path nozzle

Ф16)

Rc 3/4

A

10 to 100 L/min (Flow path nozzle

Ф20)

Inflow direction

R

Right to Left or Bottom to Top (Impeller on left side against flow path) (Standard)

L

Left to Right or Bottom to Top (Impeller on right side against flow path)

Cable length

1

1 m (Standard)

2

2 m

Material of O-ring

N

NBR (Nitrile rubber)

*3

Recommended temperature range: -30 to +80°C

F

FKM (Fluorocarbon rubber)

*3

Recommended temperature range: -15 to +100°C

E

EPDM (Ethylene propylene rubber) *3 Recommended temperature range: -40 to +80°C

S

FVMQ (Fluorosilicone rubber)

*3

Recommended temperature range: -40 to +100°C

Z

Special

Material of monitoring window *1

C

Polycarbonate

S

SCS14 (No monitoring)

Material of Impeller, bearing, shaft, and

brush (indicated as group) *2

1

Group 1 (Standard)

2

Group 2

3

Group 3

6

Group 6

Special connection specifications

0

None

A

R3/8 x Rc1/4 Adapter (Overall length 18 mm) *4

Z

Special

Additional specifications (Add applicable code

numbers when multiple requirements are involved)

A Degrease treatment (Standard)

B Non-water treatment (Required when "Low/high temperature support" is selected.)

C Low/high temperature support (Pulse output type only, fluid temperature: -40 to +100°C) *3

*1 Monitoring windows made of polycarbonate cannot be used for low

or high temperature, or high pressure operations. For details, see

the figure on the right.

*2 Materials in each material group are listed in the outline drawings.

Select the material group that is suitable for the fluid used.

*3 When using the product for a liquid at low or high temperatures, it is

recommended that the product be used within the temperature

range recommended for the material of the O-ring.

*4 The R3/8 x Rc1/4 adapter can only be used when the flow rate is

within the range between W-20

□2 and 20□4.

SCS14

SCS14

1.2

1.0

0.8

0.6

0.4

0.2

0.0

－40 －30 －20 －10 0 10 20 30 40 50 60 70 80 90 100

Monitoring window: Allowable uid temperature and pressure ranges

Polycarbonate

Fluid temperature (°C)

<Recommended models>

Fluid

Temperature

Max.

pressure

Recommended model

Remarks

Cooling water

5 to 60°C

0.6 MPa

W-20

□□-□□-□C10-A

Cooling water

5 to 60°C

0.6 MPa

W-20

□4-□□-□C1A-A

Flow rate range: 10 L/min or less

Connection: Rc1/4 (Adapter included)

Cooling water

5 to 60°C

1.0 MPa

W-20

□□-□□-□S10-A

Cooling water

5 to 80°C

1.0 MPa

W-202

□-□□-□S10-A

Consult us when using hot water at a

temperature of 80°C or higher.

Fluorinert, Galden, ethylene glycol, etc. 5 to 60°C

0.6 MPa

W-20

□□-□□-□□30-AB

Fluorinert, Galden, ethylene glycol, etc. 5 to 100°C

1.0 MPa

W-202

□-□□-SS30-AB

Fluorinert, Galden, ethylene glycol, etc. -40 to 100°C

1.0 MPa

W-202

□-□□-SS30-ABC

W-2000 MINI-WHEEL FLOWMETER

2

TOKYO KEISO CO., LTD.

TG-F2393-E00