【Trafag,8711,8731SF6气体密度变送,SF6气体密度控制器】价格_厂家

品牌

Trafag

型号

8711,8731,8741,8751

类型

电感压力变送器

测量范围

0-1（kPa）

测量介质

SF6气体

电源电压

4

防爆等级

IP65

输出信号

4-20mA

精度等级

1

防护等级

IP65

接口尺寸

螺纹连接

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

较同类产品更精确

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