| 類型： | Trafag,8718,8728,8738,8748,氣體密度繼電器,極低溫SF6氣體密度控制器 | 聯(lián)接型式： | 螺紋 |
| 型號： | Trafag氣體密度繼電器,SF6氣體密度控制器,8718,8728,8738,8748 | 精度等級： | 1 |
| 品牌： | Trafag/瑞士 | 環(huán)境溫度： | -60-80（℃） |
| 加工定制： | 是 | 公稱直徑： | 100（mm） |
| 測量范圍： | 0-1.1（MPa） |
Trafag,8718,8728,8738,8748,氣體密度繼電器,極低溫SF6氣體密度控制器
北極溫度SF6氣體密度繼電器,SF6氣體密度控制器
Trafag8718,8728,8738,8748,SF6氣體密度繼電器基本參數(shù)
壓力范圍:0...1 MPa (0...1000 kPa)
使用最低溫度:-60ºC (-65ºC)
適用氣體：SF6和其它氣體
精度等級：
Reference pressure <650 kPa abs.: ± <10 kPa @ -30...+50°C
Reference pressure >650 kPa abs.: ± <12 kPa @ -30...+50°C
Trafag,8718,8728,8738,8748,氣體密度繼電器,極低溫SF6氣體密度控制器產(chǎn)品特點
北極溫度SF6氣體密度繼電器,SF6氣體密度控制器
Application
High voltage technology
Main characteristics
Gas Density Monitor for SF6 and other gases
? Principle: Reference gas measurement
? Measuring range: 0...1.1 MPa (0...1100 kPa)
? Output: floating change-over contact
? Switch point: factory calibrated
Main features
? For arctic temperatures: –60...+80°C
? Switching signal in case of liquefb of gas
? Exact switching following isochore
? Excellent vibration resistance
? No false alarms at low temperatures
? Stainless steel sensor
? Independent, galvanically separated circuits
Ordering inbation
Specifications
Main characteristics
Principle: Reference gas measurement
Measuring range absolut: 0...1.1 MPa(0...1100 kPa)
Output: floating change-over contact
Switch point: adjustment in factory
accuracy (@ 20°C)
Reference pressure <650 kPa abs.: ± <10 kPa
@ -30...+50°C
Reference pressure >650 kPa abs.: ± <12 kPa
@ -30...+50°C
accuracy of indicator
SF6 Indicator dial
Accuracy of indicator within numeralised
range: ± 10 kPa @ 20°C
Low pressure indicator
Accuracy of indicator within numeralised
range:
@ 0 kPa relative: ± 20 kPa
>200 kPa relative: ± 10 %
Micro switch
Rating: see table
Resistance of insulation: > 2 MΩ
Dielectric strenght: 2 kV terminal to ground
Life time (mechanical)
micro switch 20: 1 Mio. cycles
max. difference from the lowest to the highest
switch point: 130kPa
Switching differential typ.
micro switch 20: <15 kPa
for indicating range or switching distance
> 80 kPa: <15 kPa
Electrical connection
Screwed cable gland: see accessories
Terminal screw: plugable, 0.2...2.5 mm2
Environmental conditions
Ambient temperatur: –60...+80°C
Media temperature –60...+80°C
Protection: IP65
Humidity: max. 95% relative
Vibration
Min. Difference from switch point: 5 kPa
20...80 Hz: 4 g
Choc: 50g/ 11ms
Mechanical daTA
Material
Measurement system:
Sensor: 1.4435,1.4404, 1.4401(AISI316L, AISI316)
Sensor housing, options: 1.4435, 1.4404(AISI 316L)
Filling: Gas
Housing (density monitor): AIS i10Mg
Screwed cable gland: brass nickel plated
Weight: ~ 800...1000 g
pressure connection: 1.4404 (AISI 316L)(see data sheet H72502)
Electrical data switch
Protection
Dimensions
Dimensions
verschiedene Gas-Druckanschlüsse siehe:
différents raccords de pression pour gaz voir:
different gas pressure connections see:
Data sheet No: H72502
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