CKD WKF2 Series User manual

CC-1342A
Flow Sensor for Water
WFK2 Series
Diversied and Unrestricted
Output
Compatible

DIVERSIFIED
Diversified
Compatible with ow rates of 0.4 to 250 L/min
Compatible with a wide range of ow rates.
Easy ow rate adjustment
(option)
Can be adjusted with a
manual valve.
Handles water up to 95 °C
Molding machine cooling Laser oscillator coolingHeated water for mold
temperature controlling
Water temperature measuring feature
is standard for all models
There is no need to for an external water temperature
sensor, reducing space and wiring work.
Various output functions available
OUT1 OUT2
Analog output Switch output
NPN/PNP switchable
Pulse output External input
❯Integrating flow ❯ Integrating flow reset
❯
Peak hold reset
❯Instantaneous flow rate
❯Temperature
Analog output Switch output
NPN/PNP switchable
Pulse output IO-Link
❯ Integrating flow
❯Instantaneous flow rate
❯Temperature
❯Instantaneous flow rate 1, 2
❯Temperature 1, 2
❯ Integrating flow
❯ Instantaneous flow rate 1, 2
❯Temperature 1, 2
❯ Integrating flow
IO-Link model released
IO-Link is a digital communication standard for factory sensors and actuators. (IEC61131-9)
Parameters and event data that could not be transmitted by analog communication can now be transmitted.
Features of IO-Link
Digital signal Permanent monitoring made possible by
digital data.
Parameter remote
operation
Parameters can be set and changed from
the network, so the system can be operated
remotely.
Case identification
Model No. and serial No. can be checked via
the network.
Plug & Play
Settings can be copied from the master,
making cumbersome resetting of parameters
during maintenance unnecessary.
Malfunction
notification Malfunctions and disconnections of the device
can be checked.
Connection to fieldbus
Connection to an Ethernet network is possible,
enabling the creation of an IoT system.
Ethernet
Case identification
Parameter change
Permanent monitoring
Alarm notification
Cloud
Plant
Production site
PLC
I/O

USER-FRIENDLY
Easier to use
Cooling and temperature control of semiconductor
manufacturing equipment. Etching, grinder, dicer, CVD.
Quantitative management of
cooling water.
Semiconductor Semiconductor manufacturing equipment Hardening Induction hardening device
Control equipment
Communication
I/O
Unit
A/D conversion
unit
PLC
I/O Unit
Input
terminal
Output
terminal
Recorder
Monitor (displaying
ow rate)
Water
Air
WFK2
 SERIES
Karman vortex ow rate sensor for water FLUEREX
Detecting abnormalities
Controlling peripheral
devices
Model variations Port size
0 5 10 20 50 100 250
Flow rate range (L/min) Option
50.4
1.6
4
8
20 250
100
50
20
Rc3/8
Rc1/2
Rc3/4
Rc1
Rc1 1/4
Rc1 1/2
Manual valve
integration
for easy
flow rate
adjustments
WFK2-005
WFK2-020
WFK2-050
WFK2-100
WFK2-250
Easy to read 2-screen color liquid crystal display
Set values, temperature, etc., can be displayed
simultaneously.
Display screen rotation
The liquid crystal display can be rotated in 90° increments with-
out moving the body. There is no interference even when
installed parallel.
Example of applications
Contact CKD for support for food manufacturing processes FP Series.
Flow rate measurement data
Water temperature measurement data
Detecting abnormal ow rate
Controlling solenoid valve
Air operated
valve
Solenoid valve

1
FLUEREX (Karman vortex ow rate sensor for water)
WFK2 Series
Flow rate range: 0.4 to 5, 1.6 to 20, 4 to 50, 8 to 100, 20 to 250 L/min
Specications
Descriptions WFK2-005 WFK2-020 WFK2-050 WFK2-100 WFK2-250
Connection
Port size Rc, G, NPT 3/8, 1/2, 3/4 1, 1 1/4, 1 1/2
Port material Stainless steel: SUS304
Working conditions
Applicable uid Pure water, industrial water
Max. working pressure MPa 1.0
Proof pressure MPa 1.5
Manual valve internal leakage mL/min 0 No manual valve settings
Manual valve allowable
back pressure MPa 0.3 No manual valve settings
Ambient temperature °C 0 to 50 (85% RH or less, no condensation)
Fluid temperature °C 1 to 95
Flow rate
Flow rate range L/min 0.4 to 5 1.6 to 20 4 to 50 8 to 100 20 to 250
Repeatability (*1) Analog accuracy: ±2.5%F.S. Display accuracy: ±2.5%F.S. ±1 digit (min. display unit)
Temperature characteristics (*1) ±5%F.S. (base temperature 25°C, 10 to 50°C)
Low ow cut 5% of F.S.
Integrating ow range 99,999 L or 99,999 m3 (unit selectable), reset when the power is turned off.
Integrated pulse rate L/pulse 0.1, 0.5, 1 0.1, 0.5, 1, 10 0.5, 1, 10, 50 1, 10, 50, 100 10, 50, 100
Pressure loss MPa 0.07 (at F.S.) 0.05 (at F.S.) 0.05 (at F.S.) 0.05 (at F.S.) 0.03 (at F.S.)
Response time (*2) sec 0.25, 0.5, 1, 5, 10 (Initial value 1)
Temperature
Measurable temperature range °C 0 to 100
Accuracy Less than 50: analog accuracy ±2, display accuracy ±2 ±1 digit (min. display unit 1)
50 to 100: analog accuracy ±3, display accuracy ±3 ±1 digit (min. display unit 1)
Output
Display Two-screen LCD display, instantaneous ow rate: 3 digits, water temperature: 2 digits, integrating ow: 5 digits, with screen rotation
Analog output (*3) Standard: 0 to 5 VDC/1 to 5 VDC, option: 4 to 20 mA DC, 0 to 10 VDC/1 to 10 VDC
Switch output NPN or PNP transistor open collector output (can be switched from settings)
Max. load current 50 mA
Max. applied voltage 30 VDC
Internal voltage drop 2.0 V or less
Power supply voltage Analog output standard: 12 to 24 VDC ±10%, analog output option: 24 VDC ±10%
Current consumption (*4) 50 mA or less
Mounting
Mounting orientation Unrestricted in vertical/horizontal direction
Straight piping section None IN side: 10 D, OUT side: 5 D
Degree of protection IP65 or equiv.
Weight g
3/8 (Rc, G, NPT): approx. 320
1/2 (Rc, G, NPT): approx. 320
3/4 (Rc, G, NPT): approx. 400
1 (Rc, G, NPT): approx. 870
1 1/4 (Rc, G, NPT): approx. 1,010
1 1/2 (Rc, G, NPT): approx. 1,100
*1: Accuracy is the average value over 10 sec (for conditions not containing air bubbles). F.S. stands for full scale ow rate.
*2: The time to attain 70% of the original output after the normal ow rate (used) drops instantly to 0.
*3: Check the allowable load on the wiring method page.
*4: Current for when 24 VDC is connected, and no load is applied. The current consumption will vary depending on how the load is connected.

2
How to order
WFK2 Series
Code Content
AFlow rate range
005 0.4 to 5 L/min
020 1.6 to 20 L/min
050 4.0 to 50 L/min
100 8.0 to 100 L/min
250 20 to 250 L/min
BPort size
AA Rc3/8
Flow rate range: 005, 020, 050
BA Rc1/2
CA Rc3/4
DA Rc1
Flow rate range: 100, 250EA Rc1 1/4
FA Rc1 1/2
AB G3/8
Flow rate range: 005, 020, 050
BB G1/2
CB G3/4
DB G1
Flow rate range: 100, 250EB G1 1/4
FB G1 1/2
AC NPT3/8
Flow rate range: 005, 020, 050
BC NPT1/2
CC NPT3/4
DC NPT1
Flow rate range: 100, 250
EC NPT1 1/4
FC NPT1 1/2
CIO-Link analog output
* "D", "E", and "F" have the analog output specications from before IO-Link is used.
ASwitch/analog output 0 to 5 VDC/1 to 5 VDC
BSwitch/analog output 4 to 20 mA DC
CSwitch/analog output 0 to 10 VDC/1 to 10 VDC
DIO-Link compatible 0 to 5 VDC/1 to 5 VDC
EIO-Link compatible 4 to 20 mA DC
FIO-Link compatible 0 to 10 VDC/1 to 10 VDC
DDisplay unit
AL/min L m3°C
BL/min us gal/min L m3us gal °C °F *1
EManual valve
NSensor only
AWith manual valve (cock type) *2
FOption (attached cable)
Blank None
A
Standard cable (M12/4-conductor/ 3 m) attached
B
Double ended connector cable (M12/4-conductor/ 3 m) attached
GOption (attached bracket)
Blank None
CAttached bracket *3
How to order
[Example of model No.]
WFK2-005AAAAN-AC
AFlow rate range: 0.4 to 5 L/min
BPort size : Rc3/8
C IO-Link analog output:
Switch/analog output
0 to 5 VDC/1 to 5 VDC
DDisplay unit : L/min L m3
° C
E Manual valve : sensor only
F Option : standard cable attached
G Option : attached bracket
AFlow rate
range
BPort size
DDisplay unit
E Manual valve
C IO-Link analog output
F Option
(attached cable)
G Bracket
(attached bracket)
AWFK2 A N A C005 AA
Precautions for model No. selection
*1: The unit display "B" is for overseas use and
cannot be used in Japan.
*2: Option A (with manual valve) has a flow rate
range of 005, 020, or 050 only.
*3: When selecting option A and the bracket (C),
it is a bracket 2 set attachment.
WFK2-005
WFK2-100
WFK2-020
WFK2-250
WFK2-050
Pressure loss
0.07
0.050 0.030
0.040 0.025
0.030 0.020
0.020
0.015
0.010
0.010
0.005
0.06
0.05
0.05 0.05
0.04
0.04 0.04
0.03
0.03 0.03
0.02
0.02 0.02
0.01 0.01 0.01
0.00
0.000
0.00
0.010
0.00
0
0
0
0
01
20
5
50
102
40
10
100
203
60
15
150
304
80
20
200 250
40 505
100
Flow rate [ℓ/min]
Flow rate [ℓ/min]
Flow rate [ℓ/min]
Flow rate [ℓ/min]
Flow rate [ℓ/min]
Pressure loss
[MPa]
Pressure loss
[MPa]
Pressure loss
[MPa]
Pressure loss
[MPa]
Pressure loss
[MPa]

3
WFK2 Series
WFK2-005, 020, 050
WFK2-005, 020, 050****A
Internal structure and list
WFK2-100, 250
No. Part name Material Quantity No. Part name Material Quantity
1Packing FKM Fluoro rubber 1 or 2 7 Liquid crystal 1
2 O-ring FKM Fluoro rubber 2 8 CPU Base 1
3Temperature sensor SUS316L Thermistor 1 9 Sensor board 1
4
Karman's vortex street detection sensor PPS Resin Piezoelectric element 110 O-ring FKM Fluoro rubber 2
5 Attachment SUS304 2 11 Bracket (option) SUS304 or SPCC (1)
6 Sensor body PPS Resin GF40% 1
No. Part name Material Quantity No. Part name Material Quantity
1Handle POM Resin 17 O-ring FKM Fluoro rubber 2
2 O-ring FKM Fluoro rubber 18Cock PPS Resin GF40% 1
3Stufng PPS Resin GF40% 1 FKM Fluoro rubber
4Spacer SUS304 1 9 Attachment SUS304 2
5 O-ring FKM Fluoro rubber 110 External case PBT Resin GF30% 1
6 Cock body PPS Resin GF40% 1
* The wetted parts are 2, 3, 4, 5, 6 and
10
.
Cannot be disassembled
Cannot be disassembled
* The wetted parts are 2, 3, 4, 5, 6, 7, 8, 9 and
10
.
1
1
1
7
7
7
2
2
2
8
8
8
3
3
3
9
9
4
4
4
10
9
10
5
5
5
6
6
6
11
10
11

4
WFK2-005, 020, 050
Cable option
Common for WFK2
• Standard cable
Discrete option model No.: WF-FL-280741
• Double ended connector cable
Discrete option model No.: WF-FL-662453
Finished outer diameter 6 mm, core wire 0.5 mm2,
insulator outer diameter 1.9 mm
Bracket option
WFK2-005, 020, 050
Discrete option model No.: WF-FL-315544
WFK2-100, 250
Discrete option model No.: WF-FL-636342
Dimensions
Optional dimensions
WFK2-100, 250
With manual valve (cock type)
Model No. A B C
Opposite side D
WFK2-[*1]A[*3]**N 90 15 Rc3/8 24
WFK2-[*1]B[*3]**N 90 15 Rc1/2 27
WFK2-[*1]C[*3]**N 106 23 Rc3/4 32
WFK2-[*2]D[*3]**N 106 20 Rc1 46
WFK2-[*2]E[*3]**N 125 29.5 Rc1 1/4 50
WFK2-[*2]F[*3]**N 132 33 Rc1 1/2 55
WFK2-[*1]A[*3]**A 151 15 Rc3/8 24
WFK2-[*1]B[*3]**A 151 15 Rc1/2 27
WFK2-[*1]C[*3]**A 167 23 Rc3/4 32
[*1]: Select from 005, 020, and 050
[*2]: Select from 100 and 250
[*3]: Select from A, G, and N (dimension lines of the G screw
and NPT screw are the same)
Dimensions
WFK2 Series
M12 Connector
M12 Connector
20
26
40
14 C
42
14 20
58 80
70 94
38.5
Opposite
side D
38
62
Opposite side D
23
23
82
69
95
21
32
30 20 20 26 40
2
3
φ6
φ6
φ6
8
8
8 8
8
6
2 2
6
8
30
20
58
80
60
66
70
94
B
B
B
B
A
A
3000
3000
2-φ6
Bracket
Bracket
With manual
valve
(Option)
(Option)
(Option)
B B
A
121
C

5
WFK2 Series
· Always read the safety precautions before wiring.
* Keep the cable far away from power cords or other things that may cause noise.
Noise can cause malfunctions.
· The cable used is a 4-conductor cabtyre cable with a core wire of 0.5 mm2.
* With a standard analog output (0 to 5 V/1 to 5 V). With option (4 to 20 mA/0 to 10 V/1 to 10 V), it is 24 VDC ±10%.
Wiring method
IO-Link parameter specications
[Connector (male)]
I/O mode
OUT 1: analog ow output, analog temperature output, ow switch 1 output,
ow switch 2 output, temperature switch 1 output, temperature switch 2 output,
integrated pulse output, integrated switch output, external input, Off
OUT 2: analog ow output, analog temperature output, ow switch 1 output,
ow switch 2 output, temperature switch 1 output, temperature switch 2 output,
integrated pulse output, integrated switch output, IO-Link, Off
Descriptions
[A, D]
0 to 5 V/
1 to 5 V
[B, E]
4 to 20 mA
[C, F]
0 to 10 V/
1 to 10 V
Allowable
load weight
50 kΩ or
more
500 Ω or
less
50 kΩ or
more
Pin No.
3
Key groove
4
2
1
Connect to DC power supply minus [−]
0 VDC
Select from the I/O modes below
Connect to DC power supply plus [+]
12 to 24 VDC ±10% *
Select from the I/O modes below
Cable
Connector pin No.
OUT2 (black)
(4)
GND (blue)
(3)
OUT1 (white)
(2)
+V (brown)
(1)
Main circuit
1. General
Descriptions Details
Communication protocol IO-Link
Communication protocol version V1.1
Transmission bit rate COM2 (38.4 kbps)
Port M12 Class A
Process data (input) 4 byte
Process data (output) 0 byte
Min. cycle time 5 ms
Data storage 1 kbyte
SIO mode support None
2. Process data
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Data MSB LSB
Instantaneous flow rate [Flow Rate]
Data range Refer to Table 1
Format Integer 16
Bit 15 14 13 12 11 10 9876543210
Data Error WARNING - - Switch output MSB LSB
4321Fluid temperature [Temperature]
Data range True/False −10 to 110°C
Format Boolean Integer 8
Data range (Table 1)
Bit 005 020 050 100 250
Data range 0.00 to 5.50 L/min 0.0 to 22.0 L/min 0.0 to 55.0 L/min 0 to 110 L/min 0 to 275 L/min
* IODD files can be downloaded from the CKD website. (http://www.ckd.co.jp/)
Power light (green)
Lights when the power is on.
Blinks during IO-Link
communication.

6
Display screen details
WFK2 Series
Names and functions of display/operation section
Output mode and output operation
Mode displayMain screen
Output display
Unit display
Selection key
Set key
Display the screen mode.The state of instantaneous flow rate,
integrating flow, temperature, and various
settings are displayed.
Indicates the switch output status.
Display the value units.
Up/down changes depending on the orientation of the screen display.
(1) Hysteresis mode
OUT 1 and 2 can both be set.
Can be set with instantaneous flow
rate and temperature.
Can memorize 2 types each
of instantaneous flow rate and
temperature.
(2) Window mode
OUT 1 and 2 can both be set.
Can be set with instantaneous flow
rate and temperature.
Can memorize 2 types each
of instantaneous flow rate and
temperature.
(3) Integrated output mode
OUT 1 and 2 can both be set.
Integrating flow can be reset through
turning the power OFF, button
operation, or external input.
Function Mode
Output1
Output2
Output Setting
Response Time
NPN/PNP
Unit
Function Mode
Output1
Output2
Output Setting
Response Time
NPN/PNP
Unit
Function Mode
Output1
Output2
Output Setting
Response Time
NPN/PNP
Unit
Function Mode
Output Setting
Analog_Flow
Analog_Temp
Switch_Flow1
Switch_Flow2
Switch_Temp1
Function Mode
Output Setting
Analog_Flow
Analog_Temp
Switch_Flow1
Switch_Flow2
Switch_Temp1
Function Mode
Output Setting
Switch_Temp2
Pulse_Integrated
Switch_Integrated
External Input
Exit
Function Mode
Switch_
Mode Select
NO/NC
Lower Limit
Upper Limit
Hysteresis
Function Mode
Switch_
Mode Select
NO/NC
Lower Limit
Upper Limit
Hysteresis
Function Mode
Switch_Integrated
NO/NC
Set Point
Exit
1
2
Mode selection
Mode selection
NO/NC Selection
NO/NC Selection
NO/NC Selection
Threshold (P1) setting
Threshold (Lo 1) setting
Threshold setting
OUT 1 or OUT 2 lights when the switch is on.
Hysteresis (hy) setting
Threshold (Hi 1) setting
Hysteresis (hy) setting
Hysteresis hy 1
Hysteresis hy 1
max max
[Normally open]
[Normally open]
[Normally open]
[Normally closed]
[Normally closed]
[Normally closed]
Instantaneous
flow rate
Instantaneous
flow rate
Instantaneous
flow rate
Instantaneous
flow rate
P1
Lo 1 Lo 1Hi 1 Hi 1
P1
ON
ON
ON ON
Integrating
flow
Integrating
flow
ON
ON
OFF
OFF
OFF OFF
Time Time
OFF
OFF
Hysteresis hy 1
Hysteresis hy 1
2 seconds
Press for
several
seconds
2 seconds
Press for
several
seconds
2 seconds
Press for
several
seconds
Select Output
Setting
Press
Select Output
Setting
Press
Select Output
Setting
Press
Select
Swich_□
Press
Select
Swich_□
Press
Select Switch_
Integrated
Press
1. Switch output

7
WFK2 Series
(4) NPN/PNP conversion
NPN and PNP can be converted.
* Perform NPN and PNP conversion when the switch output is OFF.
Conversion settings are applied when the power is turned back ON.
Function Mode
Output1
Output2
Output Setting
Response Time
NPN/PNP
Unit
Function Mode
NPN/PNP
NPN
PNP
Exit
NPN/PNP selection
2 seconds
Press for
several
seconds
Select NPN/PNP
Press
2. Integrated pulse output
3. Analog output
Pulse output matches the integrating flow count.
Selectable pulse rates
(1) Output conversion
0 to 5 V/1 to 5 V ................... select between 0 to 5 V output and 1 to 5 V output
4 to 20 mA ............................ no output conversion
0 to 10 V/1 to 10 V................ select between 0 to 10 V output and 1 to 10 V output
Applied to instantaneous flow rate, temperature output
(2) Original analog output
An analog output function that freely sets the upper and lower limits of normal analog output.
* The set range cannot be greater than the max. flow rate of each flow rate range
Function Mode
Output1
Output2
Output Setting
Response Time
NPN/PNP
Unit
Function Mode
Output1
Output2
Output Setting
Response Time
NPN/PNP
Unit
Function Mode
Output1
Output2
Output Setting
Response Time
NPN/PNP
Unit
Function Mode
Output Setting
Switch_Temp2
Pulse_Integrated
Switch_Integrated
External Input
Exit
Function Mode
Output Setting
Analog_Flow
Analog_Temp
Switch_Flow1
Switch_Flow2
Switch_Temp1
Function Mode
Output Setting
Analog_Flow
Analog_Temp
Switch_Flow1
Switch_Flow2
Switch_Temp1
Function Mode
Pulse_Integrated
Pulse Rate
L
Exit
Function Mode
Analog_Flow
Output Range
Original Range
Exit
Function Mode
Analog_Flow
Output Range
Original Range
Exit
Function Mode
Analog_Flow
Original Range
Lower Limit
Upper Limit
Exit
Pulse rate setting
Range conversion
Upper/Lower limit
value setting
40 msec
ON
OFF
2 seconds
Press for
several
seconds
2 seconds
Press for
several
seconds
2 seconds
Press for
several
seconds
Select Output
Setting
Press
Select Output
Setting
Press
Select Output
Setting
Press
Select Original
Range
Press
Select Pulse_
Integrated
Press
Select Analog_Flow
or Analog_Temp
Press
Select Analog_Flow or
Analog_Temp
Press
Model 5 L 20 L 50 L 100 L 250 L
0.1 L
0.5 L
1 L
10 L
50 L
100 L
0.1
5.4 V, 10.8 V, or 21.6 mA 5.4 V, 10.8 V, or 21.6 mA
5 V, 10 V, or 20 mA 5 V, 10 V, or 20 mA
0 V or 0 mA
1 V or 4 mA
Lower limit value Lower limit valueF.S. F.S.F.S. × 1.1 F.S. × 1.1
Instantaneous flow rate, temperature Instantaneous flow rate, temperature
Analog output
Analog output

8
WFK2 Series
4. Span adjustment
5. Setting response time
6. Peak hold
7. Energy Saving setting
Span adjustment can be set from 0.1 to 2.5 times with the initial flow rate value.
[Ex.] When set to 2.0 times
(1) Timer selection
Instantaneous flow rate response time (average movement time) can be changed.
Select from 0.25 sec, 0.5 sec, 1 sec, 5 sec, and 10 sec (1 sec at factory settings)
(2) Duration ....can be set from 0 to 9 sec
During switch output, the time it takes for the output to occur after exceeding the threshold can be set.
The max. and min. flow rates of instantaneous flow rate and temperature can be confirmed.
The max. and min. flow rates can be reset through turning the power OFF, button operation, or external input.
Energy saving can be set to "ON" or "OFF".
When set to ON, the liquid crystal backlight turns OFF after 1 minute of inactivity.
Function Mode
Output1
Output2
Output Setting
Response Time
NPN/PNP
Unit
Function Mode
Output1
Output2
Output Setting
Response Time
NPN/PNP
Unit
Function Mode
Output1
Output2
Output Setting
Response Time
NPN/PNP
Unit
Function Mode
Span Adjustment
Display
Color
Peak Hold_Q
Peak Hold_T
Operating Time
Function Mode
Span Adjustment
Display
Color
Peak Hold_Q
Peak Hold_T
Operating Time
Function Mode
Span Adjustment
Times
Exit
Function Mode
Peak Hold_Q
Max L/min
Min L/min
Reset
Exit
Span
magnification
settings
Upper limit value (display only)
Peak hold instantaneous flow rate
Peak hold temperature
Lower limit value (display only)
Peak hold
Reset
2 seconds
Press for
several
seconds
2 seconds
Press for
several
seconds
2 seconds
Press for
several
seconds
Change the
page with
Change the
page with
Select Span
Adjustment
Press
Select Peak
_Hold_□
Press
Select Response Time
Press
1.0
Function Mode
Response Time
Timer
Sec
Duration
Sec
Exit
Timer selection
Duration setting
0.2
9
Frequency
Time Time
Output
Frequency500 Hz
Threshold Threshold
500 Hz
Flow rate
Flow rate Flow rate
Flow rate
5 L/min 10 L/min
Duration Duration
When the time after exceeding the threshold is
shorter than the set duration, switch output is off.
When the time after exceeding the threshold is
greater than the set duration, switch output is on.
Function Mode
Output1
Output2
Output Setting
Response Time
NPN/PNP
Unit
Function Mode
Span Adjustment
Display
Color
Peak Hold_Q
Peak Hold_T
Operating Time
Function Mode
Energy Saving
Output Simulation
Copy Mode
Reset Setting
Exit
Function Mode
Energy Saving
ON
OFF
Exit
ON/OFF selection
2 seconds
Press for
several
seconds
Change the
page with
Change the
page with
Select Energy
Saving
Press

9
WFK2 Series
8. IO-Link
9. Screen display
Acquiring measurement data, changing the threshold, and other bi-direction communication are
possible with an IO-Link connection (OUT 2 only).
* Only with IO-Link option
(1) Display
Brightness ....... select from 25%, 50%, 75%, and 100%.
Rotation .......... select from 0°, 90°, 180°, and 270°.
Update time ..... select from 0.25 sec, 0.5 sec, 1 sec, 5 sec, and 10 sec.
(2) Color
Main Color: change the color of characters on the main display. (Select from white, green, and red)
Changed Color: change the color when the instantaneous flow rate, integrating flow rate, and temperature
go above or below their set upper and lower limits.
Change character color……select from white, green, and red
Upper limit setting: the upper limits of instantaneous ow rate, integrating ow rate, and temperature at which
character color changes.
Lower limit setting: the lower limits of instantaneous ow rate, integrating ow rate, and temperature at which
character color changes.
Function Mode
Output1
Output2
Output Setting
Response Time
NPN/PNP
Unit
Function Mode
Output1
Output2
Output Setting
Response Time
NPN/PNP
Unit
Function Mode
Output1
Output2
Output Setting
Response Time
NPN/PNP
Unit
Function Mode
Output2 1/3
Analog_Flow
Analog_Temp
Switch_Flow1
Switch_Flow2
Switch_Temp1
Function Mode
Span Adjustment
Display
Color
Peak Hold_Q
Peak Hold_T
Operating Time
Function Mode
Span Adjustment
Display
Color
Peak Hold_Q
Peak Hold_T
Operating Time
Function Mode
Output2 2/3
Switch_Temp2
Pulse_Flow
Pulse_Integrated
Switch_Integrated
IO-Link
Function Mode
Display
Brightness
Rotation
Update Time
Exit
Function Mode
Color
Flow Rate
Integrated Flow
Temperature
Exit
Function Mode
Color
Flow Rate
Main Color
Changed Color
Lower Limit
Upper Limit
Function Mode
Flow Rate
Main Color
White
Green
Red
Exit
Function Mode
Flow Rate
Changed Color
White
Green
Red
Exit
Function Mode
Color
Flow Rate
Main Color
Changed Color
Lower Limit
Upper Limit
Function Mode
Color
Flow Rate
Main Color
Changed Color
Lower Limit
Upper Limit
Refer to the instruction manual regarding operation of other functions (setting copy, external input, unit change, simulation output, power ON time display, all reset, etc.).
Function Mode
Color
Flow Rate
Main Color
Changed Color
Lower Limit
Upper Limit
Select IO-Link
2 seconds
Press for
several
seconds
2 seconds
Press for
several
seconds
2 seconds
Press for
several
seconds
Change the
page with
Change the
page with
Change the
page with
Select
Output2
Press
Select Display
Press
Select Color
Press
Select Instantaneous,
Integrating, or
Temperature
Press
Select Main
Color
Press
Select Changed
Color
Press
Select Lower
Limit
Press
Select Upper
Limit
Press
Brightness adjustment
Instantaneous flow
rate color adjustment
Main color adjustment
Main color adjustment Changed color adjustment
Lower limit setting Upper limit setting
Color selection Color selection
Rotation adjustment
Integrated flow color adjustment
Changed color adjustment
Update time adjustment
Temperature color adjustment
Upper/Lower limit setting
Function Mode
Color
Flow Rate
Lower Limit
L/min
Exit
Function Mode
Color
Flow Rate
Upper Limit
L/min
Exit
Lower limit setting Lower limit setting
00.0 00.0

10
WFK2 Series
Easy setting function
Frequently used settings can be set from the normal screen using shortcut operations.
Change main screen display
Switch setting
Hysteresis mode
Window mode
Integrated Switch setting
Integrated Pulse setting
Integration reset
Key lock
Run Mode
Flow Rate
Integrated Flow
Temperature
Output1 setting
Output2 setting
OFF
Run Mode
Run Mode
Run Mode
Run Mode
Run Mode
Run Mode
Out1 Switch_Flow1
Out1 Switch_Flow1
Out1 Switch_Int
Out1 Pulse_Int
Reset
Key lock
Integrated Flow?
UnLock
No
Lock
Yes
Hy
00.0
00 °C
00 °C
00 °C
00 °C
L/
min
W Hi 00.0
00000 L
000
W Lo
00.0
Selection
Return to main
screen
Display selection
Change threshold
Change threshold
Change threshold
Change pulse intervals
Reset integration
Execute key lock
Simultaneously
press for 2
seconds
Simultaneously
press for 2
seconds
Select the numerical
value to be changed
Press
Select the numerical
value to be changed
Press
Select the numerical
value to be changed
Press
Select the numerical
value to be changed
Press
L/
min
L/
pulse

11
Safety Precautions
Always read this section before use.
When designing and manufacturing a device using CKD products, the manufacturer is obligated to check that
device safety mechanism, pneumatic control circuit, or water control circuit and the system operated by electrical
control that controls the devices is secured.
It is important to select, use, handle and maintain the product appropriately to ensure that the CKD product is used
safely. Observe warnings and precautions to ensure device safety.
Check that device safety is ensured, and manufacture a safe device.
1This product is designed and manufactured as a general industrial machine part.
It must be handled by an operator having sufcient knowledge and experience in handling.
2Use this product in accordance with specications.
This product must be used within its stated specications. In addition, never modify or additionally machine this product.
This product is intended for use in general industrial machinery equipment or parts. It is not intended for use outdoors
(except for products with outdoor specications) or for use under the following conditions or environments.
(Note that this product can be used when CKD is consulted prior to use and the customer consents to CKD product
specications. The customer must provide safety measures to avoid risks in the event of problems.)
Use for applications requiring safety, including nuclear energy, railways, aircraft, marine vessels, vehicles, medical
devices, devices or applications in contact with beverages or foodstuffs, amusement devices, emergency cutoff
circuits, press machines, brake circuits, and safety devices or applications.
Use for applications where life or assets could be signicantly affected, and special safety measures are required.
3
Observe organization standards and regulations, etc. related to the safety of device design and control, etc.
ISO4414, JIS B 8370 (General rules for pneumatic systems)
JFPS2008 (Principles for pneumatic cylinder selection and use)
Including High Pressure Gas Safety Act, Industrial Safety and Health Act, other safety rules, body standards and regulations, etc.
4Do not handle, pipe, or remove devices before conrming safety.
Inspect and service the machine and devices after conrming safety of all systems related to this product.
Note that there may be hot or charged sections even after operation is stopped.
When inspecting or servicing the device, turn off the energy source (air supply or water supply), and turn off power
to the facility. Discharge any compressed air from the system, and note any possible water electricity leakage.
When starting or restarting a machine or device that incorporates pneumatic components, make sure that the
system safety, such as pop-out prevention measures, is secured.
5Observe warnings and cautions in the following pages to prevent accidents.
The precautions are ranked as "DANGER", "WARNING" and "CAUTION" in this section.
DANGER:
When a dangerous situation may occur if handling is mistaken leading to fatal or serious
injuries, and when there is a high degree of emergency to a warning.
WARNING:
If handled incorrectly, a dangerous situation may occur, resulting in death or serious injury.
CAUTION:
When a dangerous situation may occur if handling is mistaken leading to minor injuries or
physical damage.
Note that some items described as "CAUTION" may lead to serious results depending on the situation.
Every item provides important information and must be observed.
Limited warranty and disclaimer
1Warranty period
This warranty shall be valid for one year after delivery to the customer's designated site.
2Scope of warranty
If any faults, found to be the responsibility of CKD, occur during the above warranty term, the product shall be replaced, the
required replacement parts provided free of charge, or shall be repaired at the CKD factory free of charge.
This Limited Warranty will not apply to:
(1) Failures due to use outside the conditions and environments set forth in the catalog or these specications.
(2) Failures resulting from factors other than this product.
(3) Failures caused by improper use of the product.
(4) Failures resulting from modications or repairs made without CKD consent.
(5) Failures caused by matters that could not be predicted with the technologies in practice when the product was delivered.
(6) Failures resulting from natural disasters or accidents for which CKD is not liable.
The warranty covers the actually delivered product, and does not cover any damage resulting from losses induced by faults
in the delivered product.
3Compatibility check
The customer is responsible for conrming the compatibility of CKD products with the customer's systems, machines and equipment.
WARNING

or moreVibration or moreVibration/
impact
20 m/s298 m/s2
A
External view of strainer
B
C
D
12
Water-use equipment
Safety Precautions
Always read this section before use.
CE-compliant working conditions
This product is CE-marked, indicating conformity
with the EMC Directives. The standard for the
immunity for industrial environments applied to this
product is EN61000-6-2; the following requirements
must be satised in order to conform to this standard:
Conditions
The assessment of this product is performed by using a
cable pairing a power supply line and a signal line,
treating this cable as a signal line.
This product is not equipped with surge protection.
Implement surge protection measures on the system side.
DANGER
1. Working uids
Design/selection
Do not use in drinking water.
As it does not conform to the requirements of the
Food Sanitation Act, do not use this product for
applications that measure water entering the human
body. Intended applications include industrial sensors.
Do not use this product for ammable uids.
This product cannot be used as a business meter.
This product does not comply with Measurement
Laws, and cannot be used for commercial business. It
cannot be calibrated, so use it as an industrial sensor.
Applicable uid is water (industrial water, pure
water); do not use with any other uid.
Explosion-proof environment
Never use this product in an explosive gas
atmosphere. The structure is not explosion-proof,
and explosions or res could occur.
Corrosive environment
Do not use this product in an atmosphere containing
corrosive gases such as sulfur dioxide.
Fluid temperature and ambient temperature
Use in a uid temperature range of 1 to 95°C, and
an ambient temperature range of 0 to 50°C. If the
uid temperature rises to 95°C or higher, cool it
down using a cooling system such as a chiller. As
well, if there is a risk of freezing, drain the product
or keep it warm to prevent freezing.
When the uid and ambient temperatures are high,
the product may also get hot. There is a risk of
burns if it is touched directly.
Even if the ambient temperature is within the
specied range, do not use this product in a location
where rapid changes in temperature can occur.
Max. working pressure
Do not use at a pressure exceeding the max.
working pressure, as excessive pressure can
cause product failure. To prevent the pressure from
reaching the max. working pressure, particularly
due to water hammer, take the following measures:
(1) Using a water hammer reduction valve or other similar
mechanism, reduce the valve closing speed.
(2) Using elastic piping material, e.g. rubber hose, and an
accumulator, absorb the impact pressure.
(3) Make the pipe length as short as possible.
Drip-proof environment
This product employs a dust-proof, drip-proof
structure that provides reliability during maintenance
and cleaning, during which it may be exposed to
water splashing. However, avoid using this product
in a location where it may be constantly exposed to
water or intense splattering of water and/or oil.
WARNING
DANGER
2. Working environment
WARNING
If there is a risk of foreign matter entering the uid,
install a lter (strainer) on the primary side. If foreign
matter adheres to the vortex generator or vortex
detector, measurement accuracy can be compromised.
When using after adjusting to a small ow rate with the
manual valve, the valve's opening (clearance) becomes
very small. If there are large foreign bodies in the uid, they
may clog the clearance and reduce the ow rate.
Strainer specications
Descriptions Usage
Specication uid Water
Pressure resistance MPa 2
Working pressure range MPa 0 to 1
Operating ambient temperature range °C 1 to 90
Main material Usage
Body Copper alloy casting
Strainer Stainless steel
CAUTION
Model No. A B C D
WF-FL-280730 70 44 23 Rc3/8
WF-FL-280731 80 49 28 Rc1/2
WF-FL-280732 100 57 35 Rc3/4
WF-FL-280733 115 72 43 Rc1
WF-FL-280734 135 82 52 Rc1 1/4
WF-FL-280735 160 98 59 Rc1 1/2
Vibration/impact
Do not use this product in an environment exposed
to vibrations of 20 m/s2 and over and shocks of
98 m/s2 and over. This may cause malfunction and/
or damage, as this product uses the Karman's
vortex type detection principle.
Water temperatureWater temperature
Below 1°C
Higher than
95°C
Keep
warm
Cool with
chiller
(Sealant tape, etc.)
Strainer
Vortex generator
Foreign matter
Vortex detector

13
Use with power supply voltage and output in the
specied range.
Applying a voltage that is outside of the specied
range may cause malfunction, damage to the
sensor, electrical shock, and/or re.
Do not use any load that exceeds the rated output.
Using such a load may result in damage to the
output part or re.
Check the wire color and terminal No. when
connecting wires.
An overcurrent protection circuit for the output
transistor and a protection circuit for erroneous
wiring, which uses diodes to prevent reverse
connection, are implemented, but these do not
protect against all incorrect wiring. Incorrect wiring
can result in malfunction, failure, or damage to the
sensor.
Check the instruction manual for wiring colors and
terminal numbers in order to ensure correct wiring.
Check wiring insulation.
Check that wires do not come into contact with
other circuits, that no ground faults occur, and that
the insulator between terminals is not defective.
Otherwise, overcurrent may ow into the sensor,
causing damage.
Keep the cable far away from power cords or other
things that may cause noise. Noise can cause
malfunctions.
Keep unused wires from coming into contact with
other wires.
Do not short-circuit the output transistor.
When a load is short-circuited, overcurrent
protection circuit is triggered to prevent damage to
the output transistor; however, if this state persists,
the output transistor could be damaged.
Overcurrent protection .....approx. 50 mA
Do not use a load that can produce surge voltage.
While an element that protects against surge is
inserted, repeated exposure to surges can lead to
damage. Use relays and solenoid valves that are
equipped with surge absorption elements. If there
is a surge source on the same power supply line,
similarly implement surge protection.
Make sure that the lead wire is free of repeated
bends and tension. This may lead to disconnection.
Pipes can be installed vertically, horizontally, or in
any other orientation. Note that pipes should be
installed so that the uid constantly lls the piping
while it ows through the pipes.
When installing a pipe vertically, making the uid ow
upward can reduce the inuence of air bubbles inside.
If a pipe is narrowed just before the ow rate
sensor, or if there is a valve or other restricting
component on the primary side, cavitation occurs
inside the pipe, preventing accurate measurement.
For this reason, such piping should be installed on
the secondary side of the sensor.
Cavitation...(Vapor cavities that form due to the static
pressure at end points, such as a ship propeller,
dropping below the vapor pressure of the water.
Reduced efciency or screw damage may result.)
However, operating the pump with the secondary
side valve closed may cause the ow rate sensor
to detect pressure waves from the pump, resulting
in incorrect indication. If this occurs, install the
valve on the primary side. When doing so, ensure
that a straight pipe with a diameter of 10 times or
more bore size is installed between the valve and
the ow rate sensor.
Mounting, installation and adjustment
DANGER
WARNING
CAUTION
CAUTION
1. Wiring 2. Piping
Using an elbow or bush in the piping
When using an elbow or bush in the piping, provide straight
piping sections of at least 10 D on the IN side and 5 D on
the OUT side when using a WFK2-100 or WFK2-250 Series
model. Note that bore size change by bush should be
limited to one size. Without a straight pipe, measurement
accuracy can be compromised due to disturbances in the
ow rate and/or pressure distribution.
(Straight pipes are not necessary for the WFK2-005,
WFK2-020, and WFK2-050 Series. However, it is
recommended that a straight pipe is installed to ensure
stable measurements.)
* "D" here indicates the inner diameter of the piping material.
Refer to the table below for specic values.
Bore size
Rc3/8
(10A)
Rc1/2
(15A)
Rc3/4
(20A)
Rc1
(25A)
Rc1 1/4
(32A)
Rc1 1/2
(40A)
5D 50 mm 75 mm 100 mm 125 mm 160 mm 200 mm
10D 100 mm 150 mm 200 mm 250 mm 320 mm 400 mm
WFK2 Series
Metering valve
Metering valve

14
WFK2 Series
When installing piping, align the uid ow direction
to the direction marked on the body. Connecting
the pipe in the wrong direction prevents correct
measurement of the ow rate.
Before installing piping, clean the pipes to remove
foreign matter, cutting chips, residual testing water,
etc.
Make sure that no force is applied to the resin parts
when piping.
Make sure that the self-weight of the piping is not
applied to ow rate sensor.
It may lead to damage or external leakage. We
recommend that piping be xed during operation.
Make sure that no sealing tape or adhesive enters
the pipes when connecting the piping.
When freezing may occur, take antifreezing
measures with the devices used, such as draining
the pipes of water.
If there is signicant difference between the ambient
temperature and the uid temperature, condensation
occurs, which can enter wiring parts and cause
operation failure. If condensation should occur,
ensure that the mounting orientation of the ow rate
sensor is horizontal and the display is facing upward.
When connecting pipes, wrap sealing tape in the
opposite direction from threads starting 2 mm inside
from the end of piping threads.
If sealing tape protrudes from the pipe threads, it could be
cut when screwing the bolts in. This could cause the tape to
enter the valve, causing failures.
When using a liquid sealant, make sure it does not adhere
to resin parts. Otherwise resin parts could be damaged,
which is dangerous.
Flow direction
Use proper torque to tighten the pipes when
connecting them.
The purpose is to prevent water leakage and screw
damage.
First tighten the screw by hand to ensure that threads are
not damaged, then use a tool.
When mounting piping or ttings to this product, always
hold the attachment on the mounting side with a tool.
Holding the body of the product or the attachment on the
opposite side may lead to damage.
(Recommended values)
Port thread Tightening torque N·m
Rc3/8 31 to 33
Rc1/2 41 to 43
Rc3/4 62 to 65
Rc1 83 to 86
Rc1 1/4 94 to 100
Rc1 1/2 104 to 108
Solid/liquid
sealant
Solid/liquid
sealant
OK OK

15
If a problem occurs during operation, immediately
turn the power off, stop use, and contact your
dealer. The display may become warm (approx.
40°C), but this is not an abnormality.
Hardware check and other internal settings are
performed during approximately the rst two
seconds after turning the power on. Display and
output do not function normally during this period.
Particularly, if a transistor output is used in the
control of an interlock circuit, an abnormal stop may
occur. Mask the output during this period.
If the output setting value is changed, control system
devices could operate unintentionally. Stop devices
before changing settings.
Ensure proper operation through periodic
inspections.
When removing the equipment, shut off the power,
make sure that no water pressure is applied, and
take other safety precautions beforehand.
Do not disassemble or modify this product. Doing so
could result in faults.
When cleaning the product, use a low-polluting
cleaning agent such as a neutral detergent.
Be sure to perform air blow from the downstream
direction. Set pressure to 0.3 MPa or less.
After adjusting the ow rate, be sure to x the
manual valve with the push lock.
Do not turn the ow rate adjustment manual valve
forcibly.
Follow the precautions below for the applicable
uids to be measured. If the following water quality
standards are not met, performance may be
compromised.
The water quality of the applicable uid should be
as per the "Guideline of Water Quality for
Refrigeration and Air Conditioning Equipment"
(water quality standard: cooling system - circulating
type - circulating water) provided by the Japan
Refrigeration and Air Conditioning Industry
Association.
Descriptions
Chemical
formula
Unit Water quality
standard
pH - pH (25°C) 6.5 to 8.2
Electrical conductivity - mS/m (25°C) 0.2 to 80 *1
Chloride ion Cl-mg/L (ppm) 200 or less
Sulfate ion SO42- mg/L (ppm) 200 or less
Acid consumption (pH4.8) CaCO3mg/L (ppm) 100 or less
Total hardness CaCO3mg/L (ppm) 200 or less
Calcium hardness CaCO3mg/L (ppm) 150 or less
Ionized silica SiO2mg/L (ppm) 50 or less
Iron Fe mg/L (ppm) 1.0 or less
Copper Cu mg/L (ppm) 0.3 or less
Sulfide ion S2- mg/L (ppm) Not detected
Ammonium ion NH4+mg/L (ppm) 1.0 or less
Residue chlorine Cl mg/L (ppm) 0.3 or less
Free carbonic acid CO2mg/L (ppm) 4.0 or less
Stability index
- - 6.0 to 7.0
*1 Electrical conductivity should be 0.2 mS/m and over.
For use in the range of 0.05 to 0.2 mS/m, consult with CKD.
Do not use for ultrapure water, i.e. water with electrical
conductivity below 0.05 mS/m.
During Use & maintenance
CAUTION CAUTION
1. Common 2. Applicable uid
WFK2 Series

16
Related products
WFK2 Series
Related products
The Flo-Thru structure allows use even with water
of poor quality
The capacitance structure prevents detection
failures caused by foreign matter deposited onto
the electrode
Repeatability in elbow piping ensured
Stabilized power supply and anti-noise ferrite
core not required
Allows zero point adjustment by external input
With 180° invertible display
Reverse flow detection function equipped
Capacitance electromagnetic flow sensor
WFC Series
Catalog No. CC-1230A
Space-saving and piping free
The unitized design without piping has greatly reduced the
installation space compared with the discrete.
80% smaller footprint than conventional models (two fluid
control)
Quality improvement
There is no screw-in piping between devices, removing
concerns about external leakage.
Entry of foreign matter during operation is prevented.
Reduces workload
Piping design, piping work, material preparation, and other
troublesome work reduced significantly
Integrated unit for water control WXU Series
Catalog No. CC-1116A
A wide variety of models
Sensor type S Series
Switch type M Series
Sensor/Switch type C Series
Easy operation that does not require a manual
Sensor with water temperature measuring
function
Highly reliable Karman's vortex used
IP65 equiv. protection structure
Karman vortex flow rate sensor for water
WFK 3000 Series Catalog No. CC-1292A
Compatible with flow rate and pressure without
choosing a sensor
Analog output proportional to the displayed
value possible
Easy to read 3-color display
Lock function prevents misoperation
Energy-saving mode
Display of sensor input can be converted to any
value with the scaling function
Multi-monitor MD Series Catalog No. CC-1290A

( 器 ) 世界モ (17.11.30)B-46.ai
CKDINDIAPRIVATELTD.
CKDINDIAPRIVATELTD.BANGALOREBRANCH
TAIWANCKDCORPORATION
CKDUKOFFICE
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CKDEUROPEBRANCH
●Specifications are subject to change without notice.
The goods and/or their replicas, the technology and/or software found in this catalog are subject to complementary export
regulations by Foreign Exchange and Foreign Trade Law of Japan.
If the goods and/or their replicas, the technology and/or software found in this catalog are to be exported, law requires that the
exporter makes sure that they will never be used for the development and/or manufacture of weapons for mass destruction.
2018.1
CKD Corporation 2018 All copy rights reserved.
U.S.A.
CKDUSACORPORATION
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Building, Singapore 347789, Singapore
PHONE [phone] FAX [phone]
CKDCORPORATIONBRANCHOFFICE
No.33 Tannery Lane #04-01 Hoesteel Industrial
Building, Singapore 347789, Singapore
PHONE [phone] FAX [phone]
India
CKDINDIAPRIVATELTD.
Unit No. 607, 6th Floor, Welldone Tech Park, Sector 48,
Sohna Road, Gurgaon-122018, Haryana, India
PHONE [phone]
CKDINDIAPRIVATELTD.BANGALOREBRANCH
No. 201/B, 2nd Floor, Museum Terraces Apartment, No. 29,
Museum Road, Bangalore-560001, Karnataka, India
PHONE [phone]/7009 FAX [phone]
Indonesia
PTCKDTRADINGINDONESIA
●SALESHEADQUARTERS
Menara Bidakara 2, 18th Floor, Jl. Jend. Gatot Subroto Kav.
71-73, Pancoran, Jakarta 12870, Indonesia
PHONE [phone] FAX [phone]
・BEKASIOFFICE
・KARAWANGOFFICE
・SURABAYAOFFICE
Vietnam
CKDVIETNAMENGINEERINGCO.,LTD.
18th Floor, CMC Tower, Duy Tan Street, Cau Giay
District, Hanoi, Vietnam
PHONE [phone] FAX [phone]
Taiwan
台湾喜開理股 有限公司
TAIWANCKDCORPORATION
16F-3, No. 7, Sec. 3, New Taipei Blvd., Xinzhuang Dist.,
New Taipei City 242, Taiwan
PHONE [phone] FAX [phone]
・新竹営業所（HSINCHUOFFICE）
・台中営業所（TAICHUNGOFFICE）
・台南営業所（TAINANOFFICE）
China
喜開理（上海）機器有限公司
CKD(SHANGHAI)CORPORATION
● 営業部 / 上海浦西事務所（SALESHEADQUARTERS/SHANGHAIPUXIOFFICE）
Room 601, 6th Floor, Yuanzhongkeyan Building, No. 1905
Hongmei Road, Xinhui District, Shanghai 200233, China
PHONE [phone] FAX [phone]
・ 上海浦東事務所（SHANGHAIPUDONGOFFICE）
・無錫事務所（WUXIOFFICE）
・杭州事務所（HANGZHOUOFFICE）
・寧波事務所（NINGBOOFFICE）
・南京事務所（NANJINGOFFICE）
・蘇州事務所（SUZHOUOFFICE）
・昆山事務所（KUNSHANOFFICE）
・北京事務所（BEIJINGOFFICE）
・天津事務所（TIANJINOFFICE）
・長春事務所（CHANGCHUNOFFICE）
・大連事務所（DALIANOFFICE）
・青島事務所（QINGDAOOFFICE）
・済南事務所（JINANOFFICE）
・烟台事務所（YANTAIOFFICE）
・瀋陽事務所（SHENYANGOFFICE）
・重慶事務所（CHONGQINGOFFICE）
・成都事務所（CHENGDUOFFICE）
・西安事務所（XIANOFFICE）
・武漢事務所（WUHANOFFICE）
・鄭州事務所（ZHENGZHOUOFFICE）
・長沙事務所（CHANGSHAOFFICE）
・広州事務所（GUANGZHOUOFFICE）
・深圳西事務所（WESTSHENZHENOFFICE）
・深圳東事務所（EASTSHENZHENOFFICE）
・東莞事務所（DONGGUANOFFICE）
・厦門事務所（XIAMENOFFICE）
Korea
CKDKOREACORPORATION
●HEADQUARTERS
（3rd Floor）, 44, Sinsu-ro, Mapo-gu, Seoul 121-856, Korea
PHONE +82- （ 0 ） 2-783-5201〜5203 FAX +82- （ 0 ） 2-783-5204
・水原営業所（SUWONOFFICE）
・天安営業所（CHEONANOFFICE）
・蔚山営業所（ULSANOFFICE）
□2-250,Ouji,KomakiCity,Aichi,485-8551Japan
□PHONE[phone]FAX[phone]
Websitehttp://www.ckd.co.jp/