Specs Clamp-On Air Flow Sensor FD-EC series

Amplifier unit

Model

FD-ECA1

FD-ECA1C

FD-ECA0

Image

Type

Cable type

M12 connector type*5

Zero line type*6

Number of control outputs

2

*7

Number of analog outputs

1

Number of external inputs

*7

Power supply cable

2 m 6.6', strand wire, 6 cores

Pigtail, 100 mm 3.94", M12 connector, 8 pins of which 6 are used pins used

No cable

Response time (90% response)

50 ms/100 ms/250 ms/1 s/5 s (selectable, initial value: 250 ms)*1

I/O

Control outputs 1 and 2

Instantaneous flow/Accumulated flow/Alarm output/Pulse output
NPN/PNP setting switchable, 100 mA or less total for two outputs, residual voltage: 2.5 V or less

Analog output

Instantaneous flow
4-20 mA/0-20 mA (switchable), load resistance: 260 Ω or less

External input

Zero flow/Origin adjust./Reset total
Short-circuit current: 1.5 mA or less

Network compatibility

IO-Link*2

NU Series compatibility

Number of connectible units

Eight units per one NU1 main unit;
four units per one FS-MC8N/P main unit*6

Protection circuit

Protection against reverse power connection, output overcurrent, output surge, reverse output connection, and incorrect head cable wiring

Protection against incorrect head cable wiring

Power supply

Power voltage

24 VDC +20%/-10% (including ripple), Class2/LPS

24 VDC ± 10% (including ripple), Class2/LPS

Power consumption

1680 mW*3excluding load current

1290 mW excluding load current

Environmental resistance

Ambient temperature

−10°C to +55°C 14 to 131°F (no freezing)*4

Relative humidity

35%RH to 85%RH (no condensation)

Vibration resistance

10 to 500 Hz, power spectral concentration: 0.816 G2/Hz, XYZ axes

Shock resistance

100 m/s2, 16 ms pulse, XYZ axes, 1000 times for each axis

Material

Main unit: polycarbonate, FG terminal: copper/iron

Weight

Approx. 90 g 3.17 oz

Approx. 42 g 1.48 oz

Approx. 26 g 0.92 oz

*1 5 ms is added to the analog output response time and the response is set to 63%.
*2 IO-Link: Compatible with specification v1.1/COM3 (230.4 kbps).
*3 182 mA or less with the load included.
*4 The ambient temperature to use varies depending on the number of adjacent cable type/M12 connector type units or depending on the number of expansion zero line type units added to the system. For 1 or 2 units, the temperature is 55°C 131°F. For 3 to 5 units, the temperature is 50°C 122°F. For 6 to 8 units, the temperature is 45°C 113°F. The prescribed values for the ambient temperature assume that the amplifier unit has been mounted on a DIN rail installed on a metal surface. Exercise special care when installing the product in an airtight space.
*5 Ensure the cable length is 30 m 98.4' or less (20 m 65.6' or less when using IO-Link) for the M12 connector type.
*6 To use the zero line type, connect it to the FS-MC8N/P, NU Series.
*7 This counts as 2 outputs/1 input when connecting multiple units to the FS-MC8N/P, NU Series.

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Sensor head

Model

FD-ECH6

FD-ECH7

FD-ECH8

FD-ECH9

FD-ECH10

FD-ECH12

FD-ECH13

Image

Pipe size

Outer diameter of pipe

ø6 0.24"

1/4" (approx. 6.35 mm 0.25")

ø8 0.31"

3/8" (approx. 9.53 mm 0.38")

ø10 0.39"

ø12 0.47"

1/2" (approx. 12.7 mm 0.50")

Installable range

6.0 0.24"
± 0.15 mm 0.01"

6.35 0.25"
± 0.15 mm 0.01"

8.0 0.31"
± 0.15 mm 0.01"

9.53 0.38"
± 0.15 mm 0.01"

10.0 0.39"
± 0.15 mm 0.01"

12.0 0.47"
± 0.15 mm 0.01"

12.7 0.50"
± 0.15 mm 0.01"

Pipe materials

Polyurethane, nylon, PFA,*1 other*2

Supported gases

Air, nitrogen, argon, and other gases*3

Supported gas temperature

−10°C to +60°C 14 to 140°F

Operating pressure range

0 to 0.75 MPa (upper limit depends on pipe specifications)

Flow rate detection principle

Ultrasonic transmission time difference method

Rated flow rate

(volume flow rate)

40 L/min 1.41 CFM * Initial display

70 L/min 2.47 CFM * Initial display

100 L/min 3.53 CFM * Initial display

120 L/min 4.24 CFM * Initial display

180 L/min 6.35 CFM * Initial display

200 L/min 7.06 CFM * Initial display

(20°C 68°F, atmospheric pressure conversion)

Gas at 20°C 68°F, 0.2 MPa

120 L/min
4.24 CFM

210 L/min
7.41 CFM

300 L/min
10.59 CFM

360 L/min
12.7 CFM

540 L/min
19.1 CFM

600 L/min
21.2 CFM

Gas at 20°C 68°F, 0.4 MPa

200 L/min
7.06 CFM

350 L/min
12.36 CFM

500 L/min
17.7 CFM

600 L/min
21.2 CFM

900 L/min
31.8 CFM

1000 L/min
35.3 CFM

Gas at 20°C 68°F, 0.6 MPa

280 L/min
9.88 CFM

490 L/min
17.3 CFM

700 L/min
24.7 CFM

840 L/min
29.7 CFM

1260 L/min
44.5 CFM

1400 L/min
49.4 CFM

Repeatability

Response time 250 ms: ±2.5% of F.S.*4*5

Display resolution

Instantaneous flow

0.01/0.1/1 L/min

0.1/1 L/min

Accumulated flow

0.01/0.1/1/10/100 L

0.1/1/10/100/1000 L

Display method

Output indicator

Environmental resistance

Enclosure rating

IP65 (IEC60529)

Ambient temperature

−10°C to +60°C 14 to 140°F (no freezing)

Relative humidity

35%RH to 85%RH (no condensation)

Vibration resistance

10 to 500 Hz, power spectral concentration: 0.816 G2/Hz, XYZ axes

Shock resistance

100 m/s2, 16 ms pulse, XYZ axes, 1000 times for each axis

Material

Sensor unit

PBT/PAR/iron

Sensor surface

Special rubber

Weight

Approx. 102 g
3.60 oz

Approx. 105 g
3.70 oz

Approx. 114 g
4.02 oz

Approx. 115 g
4.06 oz

Approx. 116 g
4.09 oz

*1 Use PFA tubes in an environment with a temperature of 40°C 104°F or less.
*2 Resin tubes that transmit ultrasonic waves.
*3 Gases that transmit ultrasonic waves. Measurement may be unstable due to the pressure inside of the pipe and the type of gas.
*4 Accuracy improves with longer response times. As a rule, this is by a proportion of √(250 ms/response time)x.
*5 This value is guaranteed by KEYENCE inspection facilities. Errors will be introduced by factors such as the condition and type of pipes as well as the temperature and type of gas.

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