Trafag,8773,SF6气体密度继电器,SF6气体密度变送器,SF6气体密度控制器

    Trafag,8773,SF6气体密度继电器,SF6气体密度变送器,SF6气体密度控制器

    主要特点:

    测量原理:石英晶振测量

    测量范围:0...60 kg SF6 /m3  10 ... 253 Hz

    输出:数字信号或脉冲电流

    可连续测量温度和密度

    密度精度等级:1.0

    温度精度等级:正常温度±2°C    -40...85°C: ±3°C

    电源电压:15 (10...20) VDC

   环境条件 工作温度：-40...+70°C
              介质温度：-40 ...+70°C
              存储温度：-40 ...+85°C

    工作压力:20BAR

    Trafag,8773,SF6气体密度继电器,SF6气体密度变送器,SF6气体密度控制器

    主要特色

    长期使用输出信号无漂移

    *护等级IP65

    无需维护

    高*振性和*冲击性

    紧凑型设计

    适合于户外使用

    随压力变化响应时间<10ms

   Application
    High voltage technology

   Main characteristics

    SF6 Density Sensor
?  Principle:       Oscillating quarz measurement
?  Measuring range: 0...60 kg SF6 /m3
                     10 ... 253 Hz
?  Output
      Di*al:       current pulses onto supply current
?  Accuracy:        ±1% of measured value and ±1% of range
 

    The gas density sensor Trafag 8773 has been specially designed for surveying insulation gases.
    The gas density is measured with an oscillating quarz with excellent long term stability. A second quarz in vacuum is used to compensate for a
possible temperature error. The output signal is a pulse train modulated onto the supply current.
    The measured density is propotional to the pulse frequency.

    Additionally the temperature can be measured over the pulse width of the frequency signal.

    Main features

?  Continuous measurement of density and temperature
?  long term drift free output signal
?  Protection IP65
?  No maintenance
?  Compact
?  Vibration and shock proof
?  Suitable for outdoor usage
?  Response time <10ms (with pressure changes)

   Ordering information

   Specifications

    Main characteristics
    Principle:       Oscillating quarz measurement
    Measuring range: 0...60 kg SF6 /m3
                     10 ... 253 Hz
    Output
      Di*al: current pulses onto supply current

   Accuracy
   Accuracy:         ±1% of measured value and ±1% of range
   Repeatability:    ±0.2% of measured value
   Temperature signal
      at ambient temperature ±2°C
      at -40...85°C: ±3°C

    Electrical data
    Output signal
      Di*al:        current pulses
      Density signal: pulse frequency
                      10...253 Hz (range
                      0...51.22kg SF6/m3)
    Supply voltage:   15 (10...20) VDC
    Ground:           at gas connection of sensor
    Reaction time:    <10 ms (with pressure changes)
    Temperature signal: Pulse width 2188 ... 2565 ... 2975ms
                       (=Temp. -40...23...85°C)

   Environmental conditions
    Operating temperature:    -40... +70°C
    Media temperature:        -40... +70°C
    Storage temp.:            -40... +85°C
    Operating pressure:       20 bar
    Humidity:                 suitable for outdoor usage;
                              55°C and 98% relative
    Protection:               IP65
    Vibration:                15 g (max. 6 mm),
                              (5...2000 Hz)
    Chock:                    100g/ 6 ms

   EMC Protection
    Emission:                 EN /IEC 61000-4-4
    Immunity:                 EN /IEC 61000-4-5
   

   Mechanical data
    Material
      Housing:                AlMgSi1
      Electr. connection:     Cable with connecteur
    Montage:                  any position
    Weight:                   approx. 200...400 g

   Functional diagram

   
    Output Signal

    Dimensions