Cảm Biến Áp Suất WIKA WU-20, WU-25, WU-26 - Ultra High Purity Transducer

Ultra high purity transducer, Ex nA nL Models WU-20, WU-25 and WU-26

  • Measuring range (bar)
    • Model WU-20, WU-25, WU-26: 2, 4, 7, 11, 17
    • Model WU-20, WU-25: 25, 36, 70, 100, 145, 225, 360
  • Measuring range (psi)
    • Model WU-20, WU-25, WU-26: 30, 60, 100, 160, 250
    • Model WU-20, WU-25: 350, 500, 1.000, 1.500, 2.000, 3.000, 5.000
  • Overpressure limit (bar)
    • Model WU-20, WU-25, WU-26: 8, 8, 14, 20, 32
    • Model WU-20, WU-25: 50, 80, 150, 200, 320, 500, 720
  • Burst pressure (bar)
    • Model WU-20, WU-25, WU-26: 120, 120, 150, 170, 330
    • Model WU-20, WU-25: 400, 500, 550, 720, 720, 720, 720
  • Measuring principle Thin-film measuring cell
  • Materials
    • Wetted parts
      • Process connection: 316L VIM/VAR
      • Thin-film measuring cell: 2.4711 / UNS R30003
    • Case: 304 SS
  • Particle test ≤ 0.1 µm particles 0.1 ptc / ft³ per SEMI E49.8
  • Helium leak test < 1 x 10-9 mbar l/sec (atm STD cc/sec) per SEMI F1
  • Surface treatment Electropolished, typical Ra ≤ 0.13 µm (RA 5); max. Ra ≤ 0.18 µm (RA 7) per SEMI F19
  • Dead volume WU-20 < 1.5 cm³, WU-25 < 1 cm³, WU-26 < 1 cm³
  • Permissible media Special gas, vapour, liquid
  • Power supply U+
    • DC 10 ... 31 V with output signal DC 0 ... 5 V / 4 ... 20 mA
    • DC 14 ... 31 V with output signal DC 0 ... 10 V
  • Output signals and max. load
    • 4 ... 20 mA, 2-wire, RA ≤ (U+ – 10 V) / 0.02 A
    • DC 0 ... 5 V, 3-wire, RA > 5 kΩ
    • DC 0 ... 10 V, 3-wire, RA > 10 kΩ
  • Power Pi 1 W
  • Adjustability of zero point
    • -3.5 ... +3.5 % of span (via potentiometer), current output
    • -2 ... +3.5 % of span (via potentiometer), voltage output
  • Response time (10 ... 90 %) ≤ 300 ms
  • Insulation voltage DC 500 V
  • Accuracy
    • ≤ 0.15 % of span (≤ 0.4 % of span with measuring ranges ≤ 2 bar) RSS (root sum squares)
    • ≤ 0.3 % of span 1) (≤ 0.6 % of span 1) with measuring ranges ≤ 2 bar) per IEC 61298-2
  • Hysteresis ≤ 0.14 % of span
  • Non-repeatability ≤ 0.12 % of span
  • Stability per year ≤ 0.25 % of span (typ.), at reference conditions (≤ 0.4 % of span with measuring ranges ≤ 2 bar)
  • Permissible temperature ranges
    • Medium
      • Without approval
        • -20 ... +100 °C
        • -4 ... +212 °F
      • T4
        • -20 ... +85 °C
        • -4 ... +185 °F
      • T5
        • -20 ... +60 °C
        • -4 ... +140 °F
      • T6
        • -20 ... +40°C
        • -4 ... +104 °F
    • Ambient
      • Without approval
        • -20 ... +85 °C
        • -4 ... +185 °F
      • T4
        • -20 ... +85 °C
        • -4 ... +185 °F
      • T5
        • -20 ... +60 °C
        • -4 ... +140 °F
      • T6
        • -20 ... +40°C
        • -4 ... +104 °F
    • Storage
      • Without approval
        • -40 ... +100 °C
        • -4 ... +104 °F
      • T4
        • -40 ... +100 °C
        • -40 ... +212 °F
      • T5
        • -40 ... +100 °C
        • -40 ... +212 °F
      • T6
        • 40 ... +100 °C
        • -40 ... +212 °F
  • Rated temperature range -20 ... +80 °C, -4 ... +176 °F (actively compensated)
  • Temperature coefficients within the rated temperature range (actively compensated)
    • Mean TC of zero: ≤ 0.1 % 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 61326-1, emission (group 1, class B) and interference immunity (industrial application)
    • ATEX directive: 94/9/EC
  • Ignition protection type
    • ATEX: II 3G Ex nA nL IIC T4/T5/T6 X (for transducers with Ex mark)
    • FM: Non-flammable for use in class I, div. 2, groups A, B, C, D and class I, zone 2, group IIC, hazardous locations (hazard classes)
  • Assembly and packaging area Clean room class 5 per ISO 14644
  • Packaging Double packaging per SEMI E49.6
  • Shock resistance 500 g (1.5 ms) per IEC 60068-2-27
  • Vibration resistance35 mm (10 ... 58 Hz) / 5 g (58.1 ... 2,000 Hz) per IEC 60068-2-6
  • Electrical safety
    • Short circuit S+ vs. U-
    • Reverse polarity U+ vs. U
  • Weight 0.1 kg

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