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Trafag,8773,SF6氣體密度繼電器,SF6氣體密度變送器,SF6氣體密度控制器

    Trafag,8773,SF6氣體密度繼電器,SF6氣體密度變送器,SF6氣體密度控制器

    主要特點:

    測量原理:石英晶振測量

    測量范圍:0...60 kg SF6 /m3  10 ... 253 Hz

    輸出:數(shù)字信號或脈沖電流

    可連續(xù)測量溫度和密度

    密度精度等級:1.0

    溫度精度等級:正常溫度±2°C    -40...85°C: ±3°C

    電源電壓:15 (10...20) VDC

   環(huán)境條件 工作溫度：-40...+70°C
              介質溫度：-40 ...+70°C
              存儲溫度：-40 ...+85°C

    工作壓力:20BAR

    Trafag,8773,SF6氣體密度繼電器,SF6氣體密度變送器,SF6氣體密度控制器

    主要特色

    長期使用輸出信號無漂移

    防護等級IP65

    無需維護

    高抗振性和防沖擊性

    緊湊型設計

    適合于戶外使用

    隨壓力變化響應時間<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
      Digital:       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 b 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 inbation

   Specifications

    Main characteristics
    Principle:       Oscillating quarz measurement
    Measuring range: 0...60 kg SF6 /m3
                     10 ... 253 Hz
    Output
      Digital: 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
      Digital:        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
    Reb time:    <10 ms (with pressure changes)
    Temperature signal: Pulse b 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 b
    Weight:                   approx. 200...400 g

   Functional diagram

   
    Output Signal

    Dimensions

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