Miniature photoelectric sensors
W2

WTB2S-2P3251
Illustration may differ
WTB2S-2P3251
1066111

Log in to get your price and the estimated date of arrival

Copy shortlink
  • Technical details
  • Downloads
  • Accessories
  • Applications
  • Videos
  • Service and Support
  • Customs data
  • Show all
    Hide all
    • Features
      Functional principlePhotoelectric proximity sensor
      Functional principle detailBackground suppression
      Dimensions (W x H x D)7.7 mm x 27.5 mm x 13.5 mm
      Housing design (light emission)Rectangular
      Sensing range max.1 mm ... 150 mm 1)
      Sensing range18 mm ... 110 mm 1)
      Type of lightVisible red light
      Light sourcePinPoint LED 2)
      Light spot size (distance)Ø 3.5 mm (50 mm)
      Wave length640 nm
      AdjustmentPotentiometer, 3 turns
      Special applicationsDetecting small objects
      • 1) Object with 90% remission (based on standard white, DIN 5033).
      • 2) Average service life: 100,000 h at TU = +25 °C.
    • Mechanics/electronics
      Supply voltage10 V DC ... 30 V DC 1)
      Ripple< 5 Vpp 2)
      Current consumption20 mA 3)
      Switching outputPNP
      Switching modeLight/dark switching
      Output current Imax.≤ 50 mA
      Response time< 0.5 ms 4)
      Switching frequency1,000 Hz 5)
      Connection typeCable with M8 male connector, 4-pin, 200 mm 6)
      Cable materialPVC
      Cable diameterØ 3 mm
      Circuit protection

      A 7)

      B 8)

      D 9)

      Housing materialPlastic, ABS/PC
      Optics materialPlastic, PMMA
      Enclosure ratingIP67
      Ambient operating temperature–25 °C ... +50 °C
      Ambient temperature, storage–40 °C ... +75 °C
      UL File No.NRKH.E181493
      • 1) Limit values.
      • 2) May not exceed or fall below Uv tolerances.
      • 3) Without load.
      • 4) Signal transit time with resistive load.
      • 5) With light/dark ratio 1:1.
      • 6) Do not bend below 0 °C.
      • 7) A = VS connections reverse-polarity protected.
      • 8) B = output reverse-polarity protected.
      • 9) D = outputs overcurrent and short-circuit protected.
    • Safety-related parameters
      MTTFD3,138 years
      DCavg0 %
    • Classifications
      eCl@ss 5.027270904
      eCl@ss 5.1.427270904
      eCl@ss 6.027270904
      eCl@ss 6.227270904
      eCl@ss 7.027270904
      eCl@ss 8.027270904
      eCl@ss 8.127270904
      eCl@ss 9.027270904
      eCl@ss 10.027270904
      eCl@ss 11.027270904
      eCl@ss 12.027270903
      ETIM 5.0EC002719
      ETIM 6.0EC002719
      ETIM 7.0EC002719
      ETIM 8.0EC002719
      UNSPSC 16.090139121528
    Show all
    Hide all

    Technical drawings

    WTB2S-2P3251
    Connection diagram Cd-084
    WTB2S-2P3251
    Characteristic curve WTB2S-2, 150 mm
    WTB2S-2P3251
    Light spot size WTB2S-2, 150 mm
    WTB2S-2P3251
    Sensing range diagram WTB2S-2, 150 mm
    WTB2S-2P3251
    Dimensional drawing WTB2S-2, 150 mm
  • View: View Gallery View List Show all
    Hide all
    Show all
    Hide all