Trafag,SF6气体密度继电器,SF6气体密度控制器,8716,8726,8736,8746

应用于SF6和其它气体

     Trafag,8716,8726,8736,8746,SF6气体密度继电器,气体密度控制器基本参数：

    压力范围：0...1 MPa (0...1000 kPa)

    输出：微动开关触点控制

    适用温度：-30-50度

    适用气体：SF6和其它气体

    精度等级：

    Reference pressure <650 kPa @ 20°C abs.:± <10 kPa @ -30...+50°C
     Reference pressure >650 kPa abs.:± <12 kPa @ -30...+50°C

    Trafag,8716,8726,8736,8746,SF6气体密度继电器,气体密度控制器产品特点：

• Principle: Reference gas measurement测量原理参考室气体
• Exact switching following isochore精确的微动开关
• Excellent vibration resistance良好的抗振性
• No false alarms at low temperatures在低温下不存在虚假报警
• Stainless steel or aluminum sensor不锈钢或铝传感谢器
• Galvanically separated circuits分立隔离电路
• Switch point adjustment in factory工厂设定开关点

   Application
    High voltage technology

   Main characteristics

    Gas Density Monitor for SF6 and other gases
?  Principle:                    R eference gas measurement
?  Measuring range absolute:     0...1.1 MPa
                                  (0...1100 kPa)
?  Output:                       floating change-over contact
?  Switch point:                 factory calibrated

    Main features
?  Exact switching following isochore at all temperatures
?  Excellent vibration resistance
?  No contact bouncing
?  Either stainless steel or aluminium/stainless steel probe
?  Independent, galvanically separated circuits

    Ordering information

    Specifications

    Main characteristics
    Principle:                   R eference gas measurement
    Measuring range absolute:    0...1.1 MPa(0...1100 kPa)
    Output:                      floating change-over contact
    Switch point:                factory calibration

   accuracy
    Reference pressure <650 kPa @ 20°C abs.:
                                ± <10 kPa @ -30...+50°C
    Reference pressure >650 kPa abs.:
                                ± <12 kPa @ -30...+50°C

   accuracy of indicator
    SF6 Indicator dial
      Accuracy of indicator within numeralised
      range:                    ± 10 kPa @ 20°C
    Low pressure indicator
      Accuracy of indicator within numeralised
      range:
      @ 0 kPa relative:         ± 20 kPa
      >200 kPa relative:        ± 10 %

    Micro switch
    Rating:                     see table
    Resistance of insulation:   > 2 MΩ
    Dielectric strenght:        2 kV terminal to ground
    Life time (mechanical)
      micro switch 20:          1 Mio. cycles
      micro switch 28:          10 Mio. cycles
    max. difference from the lowest to the highest
      switch point: 130kPa
    Switching differential typ.
      micro switch 20:          <15 kPa
      micro switch 28:          <10 kPa
        for indicating range or switching distance
        > 80 kPa:               <15 kPa

    Electrical connection
    Screwed cable gland:        see accessories
    Screw terminal:             plugable, 0.2...2.5 mm2

   environmental conditions
    Ambient temperature:        –40...+80°C
    Media temperature:          –40...+80°C
    Protection:                 IP67
    Humidity:                   max. 95% relative
    Vibration:
      @ min. 5 kPa distance from switch point no contact bouncing

      under 20...80 Hz:         4 g
    Vibration resistance:       100 Hz, 20g, 15 min.
    Shock:                      50g/ 11ms

    Mechanical data
    Material
      Measurement system
      Sensor:                   1.4435,1.4404, 1.4571
                                (AISI316L, AISI316)
        Filling:                  Gas
      Housing (density monitor): AIS i10Mg
    Screwed cable gland:         brass nickel plated
    Weight:                      ~ 800...1000 g
    Pressure connection:         1.4404 (AISI 316L)
                                 (see data sheet H72502)

   Electrical data switch

   Protection

   Dimensions

   Dimensions