Cảm Biến Áp Suất WIKA WUD-20, WUD-25, WUD-26 - Ultra High Purity Transducer With Integrated Display And Optional Switch Contacts

  • Measuring range (psi)
    • WUD-26: 15, 30, 60, 100, 160, 250
    • WUD-20, WUD-25: 15, 30, 60, 100, 160, 250, 350, 500, 1.000, 1.500, 2.000, 3.000, 5.000
  • Measuring range (bar)
    • WUD-26: 2, 4, 7, 11, 17
    • WUD-20, WUD-25: 1, 2, 4, 7, 11, 17, 25, 36, 70, 100, 14,5 225, 360
  • Overpressure limit (psi)
    • WUD-26: 120, 120, 120, 210, 320, 500
    • WUD-20, WUD-25: 120, 120, 120, 210, 320, 500, 750, 1.100, 2.100, 3.000, 4.200, 6.600, 10.000
  • Burst pressure (psi)
    • WUD-26: 1.800, 1.800, 1.800, 2.200, 2.600, 4.800
    • WUD-20, WUD-25: 1.800, 1.800, 1.800, 2.200, 2.600, 4.800, 6.200, 7.400 8,000 10,500 10,500 10,500 10,500

Other measuring ranges and units (e. g. MPa, kg/cm²) on request

Absolute pressure: 0 ... 2 bar to 0 ... 60 bar

Vacuum pressure: -1 ... 1 bar to -1 ... 250 bar

  • Measuring principle Metal thin-film sensor
  • Materials
    • Wetted
      • Process connection: 316L VIM/VAR
      • Pressure sensor: 2.4711 / UNS R30003
    • Case:
      • Lower body: 304 SS
      • Plastic components: PC/PBT
      • Keyboard: TPE
      • Display window: PC
  • Particle test ≤ 0.1 µm particles 0.1 ptc / ft³ per SEMI E49.8
  • Inboard helium leak test < 1 x 10-9 mbar l/sec (atm STD cc/sec) per SEMI F1
  • Surface finishing Electropolished, typical Ra ≤ 0.13 µm (RA 5); max. Ra ≤ 0.18 µm (RA 7), per SEMI F19
  • Dead volume WUD-20 < 1.5 cm³, WUD-25 < 1 cm³, WUD-26 < 1 cm³
  • Permissible media Special gas, vapour, liquid
  • Power supply U+
    • DC 10 ... 30 V (with output signal 4 ... 20 mA and DC 0 ... 5 V)
    • DC 14 ... 30 V (with output signal DC 0 ... 10 V)
  • Output signal and permissible max. load RA in Ω
    • 4 ... 20 mA, 3-wire RA ≤ (U+ – 10 V) / 0.02 A
    • DC 0 ... 5 V, 3-wire RA > 5 kΩ
    • DC 0 ... 10 V, 3-wireRA > 10 kΩ
  • Power Pi 1 W
  • Current consumption max. 50 mA
  • Total current consumption max. 250 mA (including switching current)
  • Adjustability of zero point
    • -3.5 ... +3.5 % of span (via potentiometer) current output signal
    • -2.0 ... +3.5 % of span (via potentiometer) current output signal
  • Settling time (10 ... 90 %) ≤ 300 ms
  • Switch points Individually adjustable via external control keys
    • Type: Transistor switching output NPN
    • Quantity: 1 or 2
    • Function: Normally open, normally closed, on, off
    • Switching current: SP1 / SP2: 100 mA
    • Accuracy: ≤0.5 % of span
  • Display
    • Design: 7-segment LED, red, 4 digits, height 8 mm, 270° rotatable
    • Accuracy: ≤1.0 % of span ±1 digit
    • Update: 0.2 s / 0.5 s / 1 s / 5 s / 10 s / 60 s (adjustable)
  • Accuracy
    • ≤ 0.15 % of span (≤ 0.4 with measuring ranges ≤ 2 bar) RSS (root sum squares)
    • ≤ 0.3 (≤ 0.6 1) with measuring ranges ≤ 2 bar)
  • Non-linearity ≤ 0.1 % of span (≤ 0.15 with measuring ranges ≤ 2 bar) BFSL per IEC 61298-2
  • Hysteresis ≤ 0.14 % of span
  • Non-repeatability ≤ 0.12 % of span
  • Stability per year ≤ 0.25 % of span (typical) at reference conditions (≤ 0.4 with measuring ranges ≤ 2 bar)

Specifications, model WUD-2x

  • Permissible temperature
    • Medium: -20 ... +100 °C / -4 ... +212 °F
    • Ambient: -10 ... +60 °C / 14 ... +140 °F
    • Storage: -10 ... +60 °C / 14 ... +140 °F
  • Rated temperature range (medium) -20 ... +80 °C / -4 ... +176 °F (actively compensated)
  • Temperature coefficients in rated temperature range (actively compensated)
    • Mean TC of zero ≤ 0.10 % of span/10 K
    • Mean TC of span ≤ 0.15 % of span/10 K
  • RoHS conformity Yes (not with bayonet connector)
  • CE conformity
    • Pressure equipment directive: 97/23/EC
    • EMC directive: 2004/108/EC, EN 61326 emission (group 1, class B) and interference immunity (industrial application)
  • Approvals
  • FM
    • NI CL I DIV 2 GP A, B, C, D T6/T5/T4
    • -10 °C <= Tamb <= +40/+60/+60 °C
    • Field Wiring Control Drawing 14097836 to be considered for installation
  • Assembly and packaging area Clean room class 5 per ISO 14644
  • Packaging Double bagging per SEMI E49.6
  • Shock resistance 15 g (11 ms), 30 g (6 ms) per IEC 60068-2-27
  • Vibration resistance5 mm or 2 g (1 ... 200 Hz) / 5 g (200 ... 500 Hz) per IEC 60068-2-6
  • Electrical safety
    • Short-circuit resistance: S+ vs. U-
    • Reverse polarity protection: U+ vs. U
  • Weight approx. 0.2 kg

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