OUTLINE

The W-2000 series is a impeller-type flowmeter that can be used on

chillers that use various fluids. There is a impeller containing magnets in

the flow path, and the number of its rotations that are proportional to the

flow rate are counted in a non-contact manner using a magnetic sensor.

Flowmeters made through precision casting that are both compact and

cost-effective are optimal for various cooling water devices and

semiconductor chillers.

FEATURES

❏

Pulse, current, and voltage output

❏

Covering a wide fluid temperature range from -40 to +100°C

❏

A minimum range of 0.5 to 3 L/min and a maximum range of 10 to 100

L/min

❏

Visible impeller rotation

❏

Wide variety of material groups to cover many kinds of fluids

❏

Easy overhauling, cleaning, and maintenance

❏

Low price owing to intensive cost down

❏

Complying with RoHS

STANDARD SPECIFICATIONS

◦Measuring fluid

: Liquids including water, Fluorinert, Galden, ethylene glycol. The liquid viscosity is 2 mPa

・s or less.

◦Fluid pressure

: Maximum 1.0 MPa (See "Monitoring window: Allowable fluid temperature and pressure ranges".)

◦Fluid temperature

: See MODEL CODE table

◦Ambient temperature : 5 to 60°C

◦Flow direction and posture:

The fluid flows in a horizontal or vertical direction. (When the fluid flows in a horizontal direction, a posture in which the

shaft of the impeller is in a horizontal orientation and the fluid flows at the top of the impeller will be obtained.)

◦Construction

: Drip-proof (equivalent to IP62)

◦Accuracy

: ±5% of F.S. for model W-20

□2

±3% of F.S. for models W-20

□3 to 20□A

[W-202

□ pulse output type]

◦Output

: Open collector pulse

[without additional specifications C]

Open drain pulse

[with additional specifications C] (Unscaled)

◦Pulse frequency

: Approximately 75 to 95 Hz at the maximum

flow rate

(Actual measured value is indicated on the

product name plate.)

◦Power supply

: 12 to 24 VDC ± 10% (10.8 to 26.4 V), 10 mA

◦Load rating

: Maximum 24 VDC + 10%, 10 mA

◦Electric connection : 3-core cable (UL2936) AWG25

◦Fluid temperature : 5 to 80°C [without additional specifications C]

-40 to +100°C [with additional specifications C]

[W-203

□ current output type]

◦Output

: 4 to 20 mA DC

◦Power supply

: 24 VDC ± 10%, 50 mA

◦Load resistance

: 500 Ω or less

◦Electric connection : 4-core cable (UL2941) AWG26

◦Fluid temperature : 5 to 60°C

[W-204

□ voltage output type]

◦Output

: 0 to 5 VDC

◦Power supply

: 24 VDC ± 10%, 35 mA

◦Load resistance

: 100 kΩ or more

◦Electric connection : 4-core cable (UL2941) AWG26

◦Fluid temperature : 5 to 60°C

[W-205

□ voltage output type]

◦Output

: 0 to 10 VDC

◦Power supply

: 12 to 24 VDC ±10% (10.8 to 26.4 V), 35 mA

◦Load resistance

: 100 kΩ or more

◦Electric connection : 4-core cable (UL2941) AWG26

◦Fluid temperature : 5 to 60°C

Flowmeters for chillers and various cooling devices

in the semiconductor industry that use Fluorinert,

Galden, and various other liquids

W-2000

MINI-WHEEL FLOWMETER

(Impeller Flowmeter)

TG-F2393-E00

1st edition Apr 2025 K