Trafag,8711,8712,8731,8741,8750,8751,SF6气体密度变送,SF6气体密度控制器

    Trafag,8711,8712,8731,8741,8750,8751,SF6气体密度变送,SF6气体密度控制器

    产品规格：

    适用于SF6和其它气体

    测量原理：参考室气体

    测量范围：0...1 MPa (0...1000 kPa)

    输出：微动开关触点

    较同类产品更**

    良好的抗振性

    低温下没有误报警

    不锈钢传感器

    分立的隔离电路

    环境温度：-40 ... +80°C

   介质温度-40 ... +80°C   

   Application
    High voltage technology

    Main characteristics

   Gas Density Controller for SF6 and other gases
    Principle:       Reference gas measurement
    Measuring range: 0...1 MPa (0...1000 kPa)
    Output:          floating change-over contact
    Switch point:    adjustment in factory

   Main features

    Exact switching following isochore
?  Excellent vibration resistance
?  No false alarms at low temperatures
?  Stainless steel sensor
?  Independent, galvanically separated circuits

   Ordering information

    Specifications

    Main characteristics

    Principle:       R eference gas measurement
    Measuring range: 0...1 MPa (0...1000 kPa)
    Output:          floating change-over contact
    Switch point:    adjustment in factory

    Accuracy (@ 20°C)
    Switching differential typ.
      Microswitch 20: <15 kPa
      Microswitch 28/83: <10 kPa
    Accuracy of the reference Miroswitch from the reference isochore (see page 4)
      -30...+50°C: <10 kPa(Filling pressure: <650 kPa)
      -30...+50°C: <12 kPa(Filling pressure: <1 MPa)

    Microswitch
    Rating:                   see table
    Resistance of insulation: > 2 MΩ
    Dielectric strength:      2 kV terminal ground
    Life time (mechanical)
      Microswitch 20:         1 Mio. cycles
      Microswitch 28/83:      10 Mio. cycles
    Max. difference from the lowest to the highest
      switching point:        130kPa

   Electrical connection
    Male electrical plug:     DIN 43650-A
    Female electrical connector
      Cable-Ø:                6...13 mm
      Terminal screw:         0.5...1.5 mm2

   Environmental conditions
    Ambient temperatur:       -40....+80°C
    Media temperature         -40....+80°C
    Protection:
      8711/50/51:             IP54
      8712/21/31/41:          IP00
    Humidity:                 max. 95 % relative
    Vibration
      Min. Difference from switch point: 5 kPa
      20...80 Hz:             4 g
    Shock:                    50g/ 11ms

    Security
    Leakage of Reference chamber: < 0.5 kPa/ year
                                  (5·10-10 kPa·I·s-1)
    Service:                      none,switch point checking after 5 years
    Reference chamber leakage tests: With Helium gas in vacuum process
                                  and integral leakage test in overpressure process

   Mechanical data
    Material
      Sensor:
         Housing:                 1.4435 (AISI316L)
         Filling:                 Gas
      Housing:                    AlMgSi1, anodized
      Male electrical plug:       PA, Polyamid
    Weight:                       ~ 350 g (8711)

   Electrical data switch

   Electrical connection

    Dimensions

    Accessories

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