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Trafag,8711,8712,8731,8741,8750,8751,SF6氣體密度變送,SF6氣體密度控制器

    Trafag,8711,8712,8731,8741,8750,8751,SF6氣體密度變送,SF6氣體密度控制器

    產品規(guī)格：

    適用于SF6和其它氣體

    測量原理：參考室氣體

    測量范圍：0...1 MPa （0...1000 kPa）

    輸出：微動開關觸點

    較同類產品更精確

    良好的抗振性

    低溫下沒有誤報警

    不銹鋼傳感器

    分立的隔離電路

    環(huán)境溫度：-40 ... +80°C

   介質溫度-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