Specs Clamp-On Flow Sensor FD-EC series

Amplifier Units

Model		FD-ECA1	FD-ECA1C	FD-ECA0
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Type		Cable Type	M12 connector type^*5	Zero Line Type^*6
No. of control outputs		2		─^*7
No. of analogue outputs		1		─
No. of external inputs				─^*7
Power supply cable		2-m strand wire, 6-core	100-mm pigtail, M12 terminal, 6 of 8 pins used	No cable
Response time (90% response)		50 ms/100 ms/250 ms/1 s/5 s (selectable, default 250 ms)^*1
Input/output	Control output 1, 2	Instantaneous flow/integrated flow/alert output/pulse output NPN/PNP setting switching, total of 2 outputs: max. 100 mA, residual voltage: max. 2.5 V		─
	Analogue output	Instantaneous flow 4–20 mA/0–20 mA (switchable), load resistance 260 Ω or less
	External input	Zero flow adjustment/zero flow origin adjustment/accumulated flow reset Short-circuit current: 1.5 mA or less
Network compatibility		IO-Link^*2		NU Series
No. of expansion units		─		8 units for one NU parent unit, 4 units for one FS-MC8N/P parent unit^*6
Protection circuit		Protection against reverse power connection, output overcurrent, output surges, reverse output connection, head cable miswiring		Protection against head cable miswiring
Power supply	Power voltage	24 VDC+20%/−10% (including ripple), Class2/LPS		24 VDC±10% (including ripple), Class2/LPS
	Power consumption	1680 mW^*3 (excluding load current)		1290 mW (excluding load current)
Environmental resistance	Ambient temperature	-10 to +55°C (no freezing)^*4
	Relative humidity	35–85% RH (no condensation)
	Vibration resistance	10 to 500 Hz; Power spectral density: 0.816 G²/Hz; X, Y and Z directions
	Shock resistance	100 m/s², 16 ms pulses, 1000 times each for X, Y, and Z directions
Material		Main unit: Polycarbonate, FG terminals: copper/iron
Weight		Approx. 90 g	Approx. 42 g	Approx. 26 g
^1 Analogue output response time is 5 ms additional and 63% response. ^2 IO-Link: SpecificationV1.1/COM3 (230.4 kbps) is supported. ^3 Less than 182 mA including load. ^4 The operating ambient temperatures for the adjacent number of cable type/M12 connector type units and the number of zero line type expansion units should be 55°C for 1 to 2 units, 50°C for 3 to 5 units, and 45°C for 6 to 8 units. 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 or less (20 m or less when IO-Link is used) for the M12 connector type. ^6 The zero line type should be used by connecting to the FS-MC8N/P and NU Series. ^*7 This counts as 2 outputs and 1 input when connecting multiple units to the FS-MC8N/P and NU Series.

Sensor head

Model			FD-ECH6	FD-ECH7	FD-ECH8	FD-ECH9	FD-ECH10	FD-ECH12	FD-ECH13
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Supported pipe diameter	Pipe outer diameter		ø6	1/4” (approx. 6.35 mm)	ø8	3/8” (approx. 9.53 mm)	ø10	ø12	1/2” (approx. 12.7 mm)
	Installable range		6.0 ±0.15 mm	6.35 ±0.15 mm	8.0 ±0.15 mm	9.53 ±0.15 mm	10.0 ±0.15 mm	12.0 ±0.15 mm	12.7 ±0.15 mm
	Pipe materials		Polyurethane, nylon, PFA^1, others^2
Supported fluids			Air, nitrogen, argon, other gases^*3
Supported fluid temperatures			−10 to +60°C
Operating pressure range			0 to 0.75 MPa (upper limit depends on pipe specifications)
Flow detection principle			Transmission time difference method
Rated flow	(volumetric flow)		40 L/min *Initial display		70 L/min *Initial display	100 L/min *Initial display	120 L/min *Initial display	180 L/min *Initial display	200 L/min *Initial display
	(at 20°C, atmospheric pressure)	Gas at 20°C, 0.2 MPa	120 L/min		210 L/min	300 L/min	360 L/min	540 L/min	600 L/min
		Gas at 20°C, 0.4 MPa	200 L/min		350 L/min	500 L/min	600 L/min	900 L/min	1000 L/min
		Gas at 20°C, 0.6 MPa	280 L/min		490 L/min	700 L/min	840 L/min	1260 L/min	1400 L/min
Repeatability			2.5% of F.S. at 250-ms response time^4^5
Display resolution	Instantaneous flow		0.01/0.1/1 L/min			0.1/1 L/min
	Integrated flow		0.01/0.1/1/10/100 L			0.1/1/10/100/1000 L
Display method			Output indicators
Environmental resistance	Enclosure rating		IP65 (IEC60529)
	Ambient temperature		-10 to +60°C (no freezing)
	Relative humidity		35–85% RH (no condensation)
	Vibration resistance		10 to 500 Hz; Power spectral density: 0.816 G²/Hz; X, Y and Z directions
	Shock resistance		100 m/s², 16 ms pulses, 1000 times each for X, Y, and Z directions
Material	Sensor unit		PBT/PAR/Iron
	Sensor surface		Special rubber
Weight			Approx. 102 g		Approx. 105 g	Approx. 114 g		Approx. 115 g	Approx. 116 g
^1 PFA tubing should be used in environments of 40°C or less. ^2 The plastic tube through which ultrasonic waves penetrate. ^3 The gas through which ultrasonic waves penetrate. Readings may become unstable depending on the pipe’s internal pressure 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 is the guaranteed value from verification performed at KEYENCE inspection facilities. Errors may occur according to the type and condition of the customer’s pipes, the type of fluid, the fluid temperature, and other factors.