sino Published in 2011-08-03
Thermocouple compensating wire is used to connect the electrode (cold side of thermocouple) with display instrument in order to form a temperature measurement system. The working temperature is -25~200℃.
Our plant mainly manufacture type KX,NX,EX,JX,NC,TX,SC/RC,KCA,KCB and WREC compensating wire for thermocouple, and they are used in temperature measurement instruments and cables. Our thermocouple compensating products are all made abiding by GB/T 4990-2010 'Alloy wires of extension and compensating cables for thermocouples' (Chinese National Standard), and also IEC584-3 'Thermocouple part 3-compensating wire' (International standard).
EMF of compensating wire and the tolerance
| Thermocouple No.indexing | Compensating and extension Wire type | Usage Classification | Measuring junction temperture/℃ | Standard EMF value/μV | Precision grade | General level | ||
| Tolerance μV | Thermal EMF range μV | Tolerance μV | Thermal EMF rangeμV | |||||
| SorR | SCorRC | G | 100 | 646 | ±30 | 616-676 | ±60 | 586-706 |
| H | 100 | 646 | - | - | ±60 | 586-706 | ||
| 200 | 11441 | - | - | 1.381~1501 | ||||
| K | KX,KCA or KCB | G | -25 | -968 | ±40 | -924~-1012 | ±80 | -880 -1056 |
| 100 | 4096 | ±40 | 4052~4140 | 4008~4184 | ||||
| H | -25 100 200 | -968 4096 8138 | ±40 | -924~-1012 4052~4140 8094~8182 | ±88 | -880 -1056 4008~4184 8050~8226 | ||
| N | NXorNC | G | -25 100 | -646 2774 | ±43 | -603 -689 2731~2817 | ±86 | -560 -732 2688~2860 |
| H | -25 100 200 | -646 2774 59123 | ±43 | -603 -690 2731~2817 5870~5956 | ±86 | -560 -732 2688~2860 5827~5999 | ||
| E | EX | G | -25 100 | -1432 6319 | ±81 | -1351 -1513 6238~ 6400 | ±138 | -1294 -1570 6181~6 457 |
| H | -25 100 200 | -1432 6319 13421 | ±81 | -1351 - 1513 6238~6400 13340~13502 | ±138 | -1294 -1570 6181~6457 13283~13559 | ||
| J | JX | G | -25 100 | -1239 5269 | ±62 | -1177 -1301 5207~5331 | ±123 | -1116 -1362 5146~5392 |
| H | -25 100 200 | -1239 5269 10779 | ±62 | -177 -1301 5207~5331 10717~10841 | ±123 | -1116 -1362 5146~5392 10656~10902±1℃or±1.5%t | ||
| ±62 | ±123 | |||||||
| T | TX | G | -25 100 | -940 4279 | ±30 | -910 970 4249~4309 | ±60 | -850 -1000 4189~4339 |
| H | -25 100 200 | -940 4279 9288 | ±48 | -892 -988 4231~4327 9240~ | ±60 | -850 -1030 4189~4369 9198~9378 | ||
| Compensation wire type | Reciprocating resistance at ℃ Ω/m（less than） | |||||
| 0.2m㎡ | 0.5m㎡ | 1.0m㎡ | 1.5m㎡ | 2.5m㎡ | ||
| SCorRC | 0.25 | 0.10 | 0.05 | 0.03 | 0.02 | |
| KCA | 3.50 | 1.40 | 0.70 | 0.47 | 0.28 | |
| KCB | 2.60 | 1.04 | 0.52 | 0.35 | 0.21 | |
| KX | 5.50 | 2.20 | 1.10 | 0.73 | 0.44 | |
| EX | 6.25 | 2.50 | 1.25 | 0.83 | 0.50 | |
| JX | 3.25 | 1.30 | 0.65 | 0.43 | 0.26 | |
| TX | 2.60 | 1.04 | 0.52 | 0.35 | 0.21 | |
| NC | 3.75 | 1.50 | 0.75 | 0.50 | 0.30 | |
| NX | 7.15 | 2.86 | 1.43 | 0.95 | 0.57 | |
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