Sensor head Maximum rated flow rate 1 L/min FD-XS1

FD-XS1 - Sensor head Maximum rated flow rate 1 L/min

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

Data Sheet (PDF)


CAD Data

360°view (3D PDF)


  • CE Marking
  • CSA




Supported pipe materials

Metal pipes, Plastic pipes (soft/hard) *1

Supported fluids

Liquids (water, oil, adhesive, grease, chemical solutions, etc.) *1

Supported fluid temperature

0 °C (no freezing on the pipe surface) to 100 °C 32 to 212 °F (Pipe surface temperature)

Clamp set model

Plastic pipe/tube attachment


Metal pipe attachment


Maximum rated flow rate

0 to 1000 mL/min

Zero cut flow rate

20 mL/min*3 (variable, default)

Display resolution

Instantaneous flow rate

0.1/1/10 mL/min (Displayed on controller)

Shot amount

0.001/0.01/0.1/1 mL (Displayed on controller)


Plastic pipe/tube attachment

Response time: 50 ms


± 0.6 %*4*5

Instantaneous flow rate

±6 mL/min*4*5

Response time: 500 ms

±1.9 mL/min*4

Metal pipe attachment

Response time: 50 ms


± 1 %*4*5

Instantaneous flow rate

±10 mL/min*4*5

Response time: 500 ms

±3.2 mL/min*4



Integrated unit display

0.1/1/10/100/1000/10000 mL (displayed on controller)

Display method

Status indicator

Environmental resistance

Enclosure rating

IP65/IP67 (IEC60529) , IP68G (JIS C0920) *6

Ambient temperature

0 to 60 °C (No freezing) 32 to 140 °F

Relative humidity

35 % to 85 %RH (No condensation)

Vibration resistance

10 to 55 Hz, double amplitude 1.5 mm 0.06 ", 2 hours each for X,Y,Z direction

Shock resistance

50 G 11 ms 3 times each for X,Y,Z direction


Sensor head

Head body: PPS/PPSU, in-cable amplifier: PPS, cable: PVC, controller connector: PPS/PBT/POM

Clamp set

For plastic pipe

Body, fixing screw: PPS, detection surface: special rubber, pipe support rubber: FKM, sensor head fixing screw: SUSXM7

For metal pipe

Metal: SUS304/SUSXM7, detection surface: special rubber, clamp support rubber: FKM, sensor head fixing screw: SUSXM7


Approx. 230 g

*1 Liquid must allow for the passage of an ultrasonic pulse, as well as not contain large air pockets or excessive bubbles. Readings may become unstable depending on the type of pipe.
*2 When using stainless steel or iron pipes, the ideal pipe wall thickness is as follows, FD-XS1: approx. 0.5 mm 0.02", FD-XS8: approx. 1 mm 0.04", FD-XS20: approx. 1 0.04" to 2 mm 0.08". FD-X signal strength and stability will decrease as the thickness of the pipe wall increases or decreases from the suggested size.
*3 The zero cut flow rate can be changed in the settings. When using the unit with a low flow rate range, perform an origin adjustment when the fluid is not moving if you change the zero cut flow rate.
*4 This specification is valid when the flow velocity distribution is stable. This value does not take into account the effects of pulsation or fluctuations in flow velocity distribution due to facility factors. Convert the F.S. (full scale value) listed in the table according to the rated flow range.
*5 The longer the response time is set, the more repeatability is improved. As a guideline, use √ (50 ms/response time) times.
*6 The connector part of the sensor head cable is IP65/IP67.

Data Sheet (PDF) Other Models