Sensor head Outer diameter of pipe 1/4” FD-EPH7

FD-EPH7 - Sensor head Outer diameter of pipe 1/4”

*Please note that accessories depicted in the image are for illustrative purposes only and may not be included with the product.

Specifications

Model				FD-EPH7
Pipe size	Outer diameter of pipe			1/4” (Approx. 6.35 mm 0.25") ^*1
	Compatible outer diameter range	Polyurethane		6.35 ±0.15 mm 0.25" ±0.006"
		Nylon		6.35 ±0.1 mm 0.25" ±0.004"
	Pipe materials			Resin pipe connectible to a one-touch coupling
Supported gases				Air, nitrogen, argon, and non-corrosive gases^*2
Supported gas temperature				−10°C to +60°C 14 to 140°F
Pressure resistance				1 MPa
Flow rate detection principle				Ultrasonic transmission time difference method
Flow rate specifications	Rated flow rate	(volume flow rate)		60 L/min 2.12 CFM
		(20°C 68°F, atmospheric pressure conversion) * Initial display	Gas at 20°C 68°F, 0.0 MPa
			Gas at 20°C 68°F, 0.2 MPa	180 L/min 6.35 CFM
			Gas at 20°C 68°F, 0.4 MPa	300 L/min 10.59 CFM
			Gas at 20°C 68°F, 0.6 MPa	420 L/min 14.8 CFM
	Measurement accuracy			±(2.0% of RD+1.0% of F.S.)^3^4
	Repeatability			Response time of 250 ms: ±2.5% of F.S.^3^5
Pressure specifications	Rated pressure			−100 kPa to +0.75 MPa * However, the flow rate cannot be measured in the range of −100 to −50 kPa.
	Overall accuracy			±2.0% of F.S.^*3
	Repeatability			Response time of 2.5 ms: ±0.4% of F.S.
Display resolution	Instantaneous flow			0.01/0.1 L/min
	Accumulated flow			0.01/0.1/1/10/100 L
	Pressure			0.1/1 kPa
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 (parts that do not contact the gas)			PBT/PAR/iron/Brass electroless nickel plating/POM/NBR/stainless steel
	Flow channel (parts that contact the gas)			PBT/Brass electroless nickel plating/NBR/nylon
Weight				Approx. 129 g 4.55 oz
^1 To ensure stable detection, it is recommended to use a pipe inner diameter that is at least equivalent to the inner diameter of this product. ^2 Gases that transmit ultrasonic waves. Measurement may be unstable due to the pressure inside of the pipe and the type of gas. ^3 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. ^4 This specification is valid when sufficient straight sections of pipe are provided and the flow velocity distribution is stable. This value does not take into account the effects of fluctuations in flow velocity distribution due to facility factors. ^*5 Accuracy improves with longer response times. As a rule, this is by a proportion of √(250 ms/response time)x.

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