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航空插件式热电偶
| 主要技术指标Major technical indexes | |||||||||
| 铠装热电偶种类、温度范围及允差 Temperature measuring range and accurancy | |||||||||
| 类别Category | 代号 | 分度号 | 套管外径（mm） | 测量范围 ℃ | *高使用温度（℃） | 允许偏差△tTolerance | |||
| 1 | 2 | ||||||||
| 镍铬－铜镍 Nickel-chromium--cupronickel | WREK | E | ≥φ3 | -40～700 | 700 | ±1.5℃或±0.4％t±1.5℃ or±0.4％t | ±2.5℃或±0.75％t±2.5℃ or ±0.75％t | ||
| WRNK | K | | -40～900 | 950 | | ||||
| WRJK | J | | -40～500 | 600 | | ||||
| WRCK | T | | -40～350 | 400 | | ||||
| 铂铑-铂 Rhodium Platinum-Platinum | WRPK | S | φ5～φ8 | 0～1100 | 1300 | ±1.5℃ or±0.25％t | | ||
| 常温绝缘电阻Insulation resistance at normal temperature 绝缘型铠装热电偶在环境温度为20±15℃，相对湿度不大于80％时，热电极与外套管之间的绝缘电阻应符合下表的规定： | |||||||||
| Of the insulated sheathed thermocouple, the insulation resistance between thermode and outer tube shall, under the ambient termperature of 20±15℃ and relative humidity not more than 80％, comply with the stipulation as below: | |||||||||
| 铠装热电偶直径d(mm) Diameter of sheathed thermocouple | 试验电压（V·DC） Ecperimental voltage | 绝缘电阻（MΩ·m） Insulation resistance | |||||||
| 0.5～1.5 | 50±5 | ≥1000 | |||||||
| ＞1.5 | 500±50 | ≥1000 | |||||||
| 注：绝缘电阻用（MΩ·m）表示。即1m长的试样的绝缘电阻为1000MΩ；10m长的试样的绝缘电阻为100MΩ。Note: The insulation resistance shall be denoted as（ MΩ·m） , namly, the insulation resisance of 1m-long specimen is 1000（ MΩ·m） and that of the 10m-long is 100MΩ. | |||||||||
| 铠装热电偶可绕半径Windable radius of sheathed thermocouple 铠装热电偶的可绕半径不应小于其直径的5倍，并没有明显的损伤。 | |||||||||
| The windable radius of sheathed thermocouple shall not less than 5 times of its | |||||||||
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