鎧裝熱電偶通常和顯示儀表、記錄儀表、電子計算機等配套使用。鎧裝熱電偶直接測量各種生產過程中的0°C~1300°C范圍內液體,蒸汽和氣體介質以及固體表面溫度。
鎧裝熱電偶特點
熱響應時間少,減小動態誤差;
可彎曲安裝使用;
測量范圍大;
機械強度高,耐壓性能好;
鎧裝熱電偶工作原理
電極由兩根不同導體材質組成。當測量端與參比端存在溫差時,就會產生熱電勢,工作儀表便顯示出熱電勢所對應的溫度值。
鎧裝熱電偶主要技術參數
產品執行標準
IEC584
IEC1515
GB/T16839-1997
JB/T5582-91
鎧裝熱電偶測量范圍及允差
型號 I | °C | 允差值 | 測溫范圍WRNK | ±1.5°C | ±2.5°C | ±0.004ltl | ±0.0075ltl | WRMK | ±1.5°C | ±2.5°C | ±0.004ltl | ±0.0075ltl | WREK | ±1.5°C | ±1.5°C | ±0.004ltl | ±0.004ltl | WRFK | ±1.5°C | ±1.5°C | ±0.004ltl | ±0.004ltl | WRCK | ±1.5°C | ±1°C | ±0.004ltl | ±0.0075ltl | WRPK | ±1°C | ±2.5°C | ±[0.003(t-1100)] | ±0.0025ltl |
| 單支式 | 雙支式 |
套管直徑 | Ф3Ф4 Ф5 Ф6 Ф8 |
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套管材質 | J﹑1Cr18Ni9Ti | K﹑1Cr18Ni9Ti GH3030 | S | GH3039 |
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鎧裝熱電偶安裝固定形式
品 | 套管材料 | 外°C) |
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長期使用 | 短期使用 |
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鎳鉻1Cr18Ni9Ti | 600 | 3.0,5.0,8.0 | 900 |
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2.0,800 | 4.0,900 | 6.0,1000 | -鎳硅 | 2.0 | 700 |
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800 | GH3030 | 900 | 4.0,5.0 | 1100 |
1100 | GH3039 | 1000 | 5.0,6.0,8.0 | 1200 |
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鎳鉻1Cr18Ni9Ti | 500 | 3.0,4.0,5.0 | 700 |
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700 | -銅鎳 | 2.0 | 500 |
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500 | 6.0,8.0 | 750 |
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銅1Cr18Ni9Ti | 250 | 6.0,8.0 | 350 |
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鉑銠GH3039 | 1000 | 5.0,6.0,8.0 | 1200 |
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鎧裝熱電偶型號命名方法
型號 W |
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P | 感溫元件材料 | 10-鉑 |
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M | 鎳鉻硅 | —鎳硅 |
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E | 鎳鉻 | —銅鎳 |
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F | 鐵 |
| 鎧裝式 |
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