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          4. Level Sensors
          5. Sensing Guide Pulse Level Sensor
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          7. Amplifier Unit, Sanitary Specification

          Sensing Guide Pulse Level SensorFL series

          Amplifier Unit, Sanitary Specification



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          Sanitary type

          Measurement range

          200 to 2,000 mm 7.87" to 78.74"

          Specific conductive capacity of measurable media

          2 or more*1


          1 mm 0.04"*2


          ±3 mm ±0.12"*2

          Temperature characteristics

          0.1 mm/°C

          Undetectable area

          In the case of water

          Top side

          25 mm 0.98"

          Bottom side

          45 mm 1.77" max.*3

          In the case of oil

          Top side

          50 mm 1.97"

          Bottom side

          65 mm 2.56" max.*3

          Judgment output response time

          0.4 s minimum

          Probe horizontal torque

          6 N m

          Tank pressure

          -0.1 to +1 Mpa

          Connection port

          2S ferrule

          Control output

          Judgment output/alarm output

          NPN/PNP open collector (selectable), 30 VDC max., 50 mA max. for each
          Residual voltage: 2 V max. for NPN, 2.5 V max. for PNP, N.O./N.C. switchable

          Analog output

          4 to 20 mA, maximum load resistance: 350 Ω (Response time: 0.1 s after comparator output determined [90 % response])
          Ripple when target remains stationary (P-P) 2 % of F.S. max.

          Network compatibility


          Analog output accuracy


          1 mm 0.04"

          Zero accuracy

          ±0.1 mA (Zero point = 4 mA)

          Full scale accuracy

          ±0.2 mA (full scale = 20 mA)

          Applicable cable

          8-pin M12 connector


          Power voltage

          10 to 30 VDC, ripple (P-P) 10% included, Class 2 or LPS

          Current consumption

          300 mA max. (at 10 V)/120 mA max. (at 30 V) (excluding load)

          Environmental resistance

          Enclosure rating


          Ambient temperature

          -20 to +60 °C -4 to +140°F

          Relative humidity

          35 to 85 % RH (No condensation)


          Operating medium temperature

          -20 to +150 °C -4 to 302 °F

          Environmental resistance

          Vibration resistance

          10 to 55 Hz, 0.75 mm 0.03" double amplitude in X, Y and Z directions, 2 hours respectively

          Shock resistance

          300 m/s2 in 6 directions, 3 times respectively


          Liquid end materials

          Sheath: PFA
          Probe: SUS304
          (do not connect this directly)


          Metal section of the housing: SUS304
          Plastic section of the housing: PBT, PAR, HNBR, EPDM, PTFE, PPSU, PET


          670 g

          *1 These values were measured at the position of 100 mm 3.94" or less from the wall of a metal tank. Contact KEYENCE for the case of a plastic tank.
          *2 These values were measured under the following conditions.
          Medium: Water, Tank material: Metal, Linearity range: Between 6 cm 2.36" from the top and 1 cm 0.39" from the bottom, Average time: 4 s
          *3 For the sanitary/plastic types, the undetectable area from the bottom end varies depending on the length of the probe.
          *4 Compatible with IO-Link Specification V1.1/COM 2 (38.4 kbps).

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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