Trafag,8710,8720,8730,8740,SF6特高压气体密度继电器,气体密度控制器

    Trafag,8710,8720,8730,8740,SF6特高压气体密度继电器,气体密度控制器

    主要技术规格

    主要应用于水处理及高压开关设备

    压力范围:0...1 MPa

    开关点工厂设定

    适用温度:-40-80度

    适用气体:SF6或其它气体

    精度等级:

    30...+50°C: <10 kPa (Filling pressure: <650 kPa)
    -30...+50°C: <12 kPa (Filling pressure: <1 MPa)

    Trafag,8710,8720,8730,8740,SF6特高压气体密度继电器,气体密度控制器

    主要特点

• Switching point adjustment in factory设定点在工作调整
• Excellent vibration resistance优良的抗振性
• No false alarms at low temperatures低温下没有误报警
• Stainless steel sensor不锈钢传感器
• Independent, separated circuits独立的分立电路
• Output: floating change-over contact输出:微动开关触点
• Trafag,8710,8720,8730,8740,SF6特高压气体密度继电器,气体密度控制器

    Main characteristics
    Gas Density Controller for SF6 and other gases
    Principle:        R eference 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
   Option: Version fore lowest temperature ranges

    Specifications
  

    Main characteristics

    Principle:       Reference 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 tothe highest

       switching point: 130kPa

    Electrical connection
    Screwed cable gland:  see accessories
    Terminal screw:       0.2...2.5 mm2
   

    Environmental conditions
    Ambient temperatur: -40....+80°C
        With Accessories 68/69: -55....+80°C
    Media temperature -40....+80°C
        With Accessories 68/69: -55....+80°C
    Protection: see page 5
    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: G as
      Housing: A lSi10Mg,weatherproof painting
      Base plate: A lMgSi1, anodized
    Screwed cable gland: brass nickel plated
    Weight: ~ 600 g

    Electrical data switch

    Electrical connection

    Protection

   



    Dimensions

   Accessories

      Ordering inbation

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