Specs Clamp-On Air Flow Sensor FD-EC series

Amplifier unit

Model		FD-ECA1	FD-ECA1C	FD-ECA0
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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.

Sensor head

Model			FD-ECH6	FD-ECH7	FD-ECH8	FD-ECH9	FD-ECH10	FD-ECH12	FD-ECH13
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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.