1、特 點
·裝配簡單，更換方便
·壓簧式感溫元件，抗振性能好；
·測溫范圍大
·機械強度高，耐壓性能好
2、工作原理
固定螺紋錐式熱電偶的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。
3、主要技術參數
產品執行標準
IEC584
IEC1515
GB/T16839-1997
JB/T5582-91
4、常溫絕緣電阻
熱電偶在環境溫度為20±15°C，相對濕度不大于80%，試驗電壓為500±50V（直流）電極與外套管之間的絕緣電阻>1000Ω.m。
5、測量范圍及允差
| 型 號 | 分 度 號 | 允 差 等 級 | |||
| I | II | ||||
| 允差值 | 測溫范圍°C | 允差值 | 測溫范圍°C | ||
| WRN | K | ±1.5°C | -40~+375 | ±2.5 °C | -40~+333 |
| ±0.004ltl | 375~1000 | ±0.0075 ltl | 333~1200 | ||
| WRM | N | ±1.5°C | -40~+375 | ±2.5°C | -40~+333 |
| ±0.004 ltl | 375~1000 | ±0.0075 ltl | 333~1200 | ||
| WRE | E | ±1.5°C | -40~+375 | ±1.5°C | -40~+333 |
| ±0.004 ltl | 375~800 | ±0.004 ltl | 333~900 | ||
| WRF | J | ±1.5°C | -40~+375 | ±1.5°C | -40~+333 |
| ±0.004 ltl | 375~750 | ±0.004 ltl | 333~750 | ||
| WRC | T | ±1.5°C | -40~+125 | ±1°C | -40~+133 |
| ±0.004 ltl | 125~350 | ±0.0075 ltl | 133~350 | ||
6、固定螺紋錐式熱電偶規格型號
| 產品型號 | 分度號 | 溫度范圍 ℃ | 熱響應時間 | 保護管材料 | 規 格（mm） | |
| d | L x l | |||||
| WRM-620 WRM2-620 | N | 0-800 | <90S | 1Cr18Ni9Ti | ?15 |
300x150 350x200 400x250 450x300 500x350 550x400 650x500
|
| 0-1000 | 0Cr25Ni20 | |||||
| WRM-620G WRM2-620G | 0-800 | 1Cr18Ni9Ti | ||||
| 0-1000 | 0Cr25Ni20 | |||||
| WRN-620 WRN2-620 | K | 0-800 | 1Cr18Ni9Ti | |||
| 0-1000 | 0Cr25Ni20 | |||||
| WRN-620G WRN2-620G | 0-800 | 1Cr18Ni9Ti | ||||
| 0-1000 | 0Cr25Ni20 | |||||
| WRE-620 WRE2-620 | E | 0-700 | 1Cr18Ni9Ti | |||
| WRE-620G WRE2-620G | ||||||
| WRC-620 WRC2-620 | T | 0-350 | 1Cr18Ni9Ti | |||
| WRC-620G WRC2-620G | ||||||
| WRF-620 WRF2-620 | J | 0-600 | 1Cr18Ni9Ti | |||
| WRF-620G WRF2-620G | ||||||
| WRM-630 WRM2-630 | N | 0-800 | <90S | 1Cr18Ni9Ti | ?15 | |
| 0-1000 | 0Cr25Ni20 | |||||
| WRM-630G WRM2-630G | 0-800 | 1Cr18Ni9Ti | ||||
| 0-1000 | 0Cr25Ni20 | |||||
| WRN-630 WRN2-630 | K | 0-800 | 1Cr18Ni9Ti | |||
| 0-1000 | 0Cr25Ni20 | |||||
| WRN-630G WRN2-630G | 0-800 | 1Cr18Ni9Ti | ||||
| 0-1000 | 0Cr25Ni20 | |||||
| WRE-630 WRE2-630 | E | 0-700 | 1Cr18Ni9Ti | |||
| WRE-630G WRE2-630G | ||||||
| WRC-630 WRC2-630 | T | 0-350 | 1Cr18Ni9Ti | |||
| WRC-630G WRC2-630G | ||||||
| WRF-630 WRF2-630 | J | 0-600 | 1Cr18Ni9Ti | |||
| WRF-630G WRF2-630G | ||||||
