【Trafag,8773,SF6气体密度继电器,变送器】价格_厂家

品牌

trafig

型号

8773

类型

其他

原理

其他

测量度

其他

测量范围

其他MPa

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

防护等级IP65

无需维护

高抗振性和防冲击性

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
    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 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
      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
    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