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接口尺寸: | 螺纹(mm) | **: | 是 |
*护等级: | IP65 | 测量范围: | 0...60 kg SF6 /m3(kPa) |
类型: | 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 | *爆等级: | IP65 |
型号: | 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 | 测量介质: | SF6气体 |
精度等级: | 1 | 品牌: | Trafag/瑞士 |
输出信号: | 4-20(mA) | 电源电压: | 4(V) |
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
8773
Trafag