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          5. Clamp-on Flow Sensor
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          7. Sensor Main Unit 25A/32A Type

          Clamp-on Flow SensorFD-Q series

          Sensor Main Unit 25A/32A Type



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          Supported pipe diameter

          1" (25 A), ø28 to ø37 (mm)
          1 1/4" (32 A), ø37 to ø44 (mm)

          Supported pipe materials

          Metal pipe/Resin pipe*1

          Supported fluids

          Various liquid [i.e. water (including DI), oils, chemicals, etc.]*1

          Supported fluid temperature

          0 to 85°C 32 to 185°F (No freezing on the pipe surface)*2

          Maximum rated flow

          1" (25 A): 200 L/min, 52.8 G/min
          1 1/4" (32 A): 300 L/min, 79.3 G/min

          Zero cut flow rate

          5 L/min (Default)*3

          Display method

          Status indicator, output indicator, dual row display with 4-digit, 7 segment LED, stability level indicator

          Display update cycle

          Approx. 3 Hz

          Display resolution

          0.1/ 1 (Default :1) (L/min)

          Response time

          0.5 s / 1.0 s / 2.5 s / 5 s / 10 s / 30 s / 60 s


          0.5 s : ±2.0%, 1 s:±1.5%, 2.5 s : ±1.0%, 5 s : ±0.5%, 10 s : ±0.35%, 30 s : ±0.2%, 60 s : ±0.15% (/F.S.*4(Specific to selected response time))



          Integrated flow unit display

          1/ 10/ 100/ 1000/ 10000 (Default : 1) (L)

          Integrated flow data storage cycle

          Save to memory every 10 seconds

          Memory backup

          EEPROM (Data storage length: 10 years or longer, Data read/write frequency: 1 million times or more)

          Power I/O connector

          M12 4-pin connector

          Input/Output (Selectable)

          Output (ch.1/ch.2)

          Control output/ Pulse output/ Error output (Selectable, Default : ch.1 control output/ ch.2 not used),
          NPN/PNP setting switchable,open collector output 30 V or less, max. 100 mA/ch., residual voltage 2.5 V or less*5

          Analog output (ch.1/ch.2)

          4 to 20 mA / 0 to 20 mA (Selectable, Default: not used), load resistance 500 Ω or less*5

          External input (ch.2)

          Integrated flow reset input/ Flow rate zero input/ Origin adjustment input (Selectable, Default: not used),
          short-circuit current 1.5 mA or less, input time 20 ms or more*5

          Power source

          Power supply voltage

          20 to 30 VDC , ripple (P-P) 10% max, Class2/LPS

          Current consumption

          130 mA or less (Load current excluded)*6

          Protection circuit

          Power supply reverse connection protection, power supply surge protection,
          each output short-circuit protection, each output surge protection

          Environmental resistance

          Enclosure rating

          IP65/IP67 (IEC60529)

          Ambient temperature

          -10 to +60 °C 14 to 140 °F (No freezing)

          Relative humidity

          35 to 85 % RH (No condensation)

          Vibration resistance

          10 to 55 Hz, Double amplitude 1.5 mm 0.06", 2 hours in each of the X, Y, and Z directions

          Shock resistance

          100 m/s2, 16 ms pulse, 1,000 times in each of the X, Y, and Z directions


          Sensor main unit


          Sensor surface


          Mounting bracket



          Approx. 530 g (including mounting bracket)

          *1 Liquid must allow for the passage of an ultrasonic pulse, as well as not contain large air pockets or excessive bubbles. Detection may be unstable on certain non-standard pipes (i.e. lined pipes)
          *2 Contact KEYENCE when the temperature of the pipe is greater than 85°C 185°F
          *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) listed in the table according to the rated flow range.
          *5 IO-Link: Compatible with Specification v1.1 / COM2 (38.4 kbps) The setting file can be downloaded from the KEYENCE website. If using the unit in the environment where downloading the file is not possible via internet, contact your nearest KEYENCE office. IO-Link is either registered trademarks or trademarks of PROFIBUS Nutzerorganisation e.V. (PNO)
          *6 When including the loads, please add 200 mA to this value.

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          IL 60143, U.S.A.
          Phone: 1-888-KEYENCE [1-888-539-3623]
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          Process Controls / Process Sensors