WRe3／25、WRe5／26 precision tungsten rhenium thermocouple - Thermocouple - sensor - Chongqing Instrument Materials Research Institute

WRe3/25, WRe5/26 alloy thermocouple wire by spray drying milling process to improve uniformity and performance of processing, mechanical and thermal, all technical performance reach the world advanced level.
WRe thermocouple is applied to 0 ~ 2300 ℃ temperature in vacuum, inert and reducing atmosphere, and also used as molten steel rapid temperature measurement probe. Anti-oxidation WRe thermocouple replacing PtRh thermocouple, the application is extremely broad.

● Product main technical parameters
basic technical parameters of product

Product	Model	Size （mm）	Work temperature range (℃)	Work condition	Tolerance
WRe thermocouple wire	WRe3/25 WRe5/26	φ0.5 φ0.25 φ0.1	0~2300	vacuum, H2 and inert	±0.5% ±0.5% ±0.25%
WRe quick thermocouple molten steel temperature measurement	WRe3/25 WRe5/26	KW-602	0~2000	molten steel	±0.5%
Mo-sheathed WRe thermocouple	WRe3/25 WRe5/26	≥φ4	≤1800	vacuum, H2 and inert	±1%
Mo-sheathed WRe thermocouple	WRe3/25 WRe5/26	≥φ3	≤2000	vacuum, H2 and inert	±1%
MoSi2-sheathed WRe thermocouple	WRe3/25 WRe5/26	φ15~φ33	≤1600	air and oxidation-reducing	±1%
Al2O3-sheathed WRe thermocouple	WRe3/25 WRe5/26	≥φ10	≤1600	air and oxidation-reducing	±1%

Note: • Thermocouple temperature insulating material are Al2O3, BeO, Y2O3, ThO2 and so on.
• Thermocouple compensating wire with WPC / WNC.
• Provide complete set of thermocouple compensation wire and record instrument.

■AuFe series thermocouple

AuFe thermocouple is mainly used for low and ultra-low temperature.

Variety	Temperature range	Tolerance	Standard
NiCr-AuFe	-270~0℃	Ⅰ：±0.5℃ Ⅱ：±1℃	GB2904－82
Cu-AuFe	-270~ -196℃	Ⅰ：±0.5℃ Ⅱ：±1℃	GB2904－82

● WRe3/25 thermocouple reference table (mV)

℃	0	10	20	30	40	50	60	70	80	90
0 100 200	0.000 1.145 2.602	0.098 1.278 2.761	0.199 1.414 2.923	0.305 1.554 3.087	0.415 1.696 3.253	0.528 1.840 3.420	0.644 1.988 3.590	0.765 2.137 3.761	0.888 2.290 3.935	1.015 2.445 4.110
300 400 500	4.286 6.129 8.077	4.464 6.320 8.275	4.644 6.512 8.475	4.825 6.705 8.675	5.008 6.898 8.875	5.192 7.093 9.076	5.377 7.288 9.277	5.563 7.484 9.479	5.751 7.681 9.681	5.940 7.879 9.883
600 700 800	10.086 12.124 14.171	10.289 12.329 14.376	10.492 12.534 14.580	10.695 12.738 14.785	10.899 12.943 14.989	11.103 13.147 15.194	11.307 13.352 15.398	11.511 13.557 15.601	11.715 13.761 15.805	11.920 13.966 16.008
900 1000 1100	16.211 18.226 20.206	16.414 18.426 20.401	16.617 18.625 20.597	16.819 18.824 20.791	17.021 19.023 20.986	17.223 19.221 21.180	17.424 19.419 21.373	17.625 19.616 21.566	17.826 19.813 21.759	18.026 20.009 21.951
1200 1300 1400	22.143 24.033 25.875	22.334 24.220 26.057	22.525 24.406 26.238	22.715 24.591 26.418	22.905 24.776 26.598	23.094 24.961 26.777	23.283 25.145 26.956	23.471 25.328 27.134	23.659 25.511 27.312	23.846 25.693 27.489
1500 1600 1700	27.666 29.404 31.085	27.842 29.575 31.249	28.018 29.745 31.413	28.193 29.914 31.577	28.368 30.083 31.740	28.542 30.252 31.902	28.715 30.419 32.063	28.888 30.587 32.224	29.061 30.753 32.384	29.233 30.919 32.543
1800 1900 2000	32.702 34.248 35.707	32.860 34.398 35.848	33.017 34.547 35.987	33.174 34.695 36.126	33.330 34.843 36.263	33.485 34.989 36.399	33.639 35.135 36.535	33.792 35.279 36.668	33.945 35.423 36.801	34.097 35.566 36.933
2100 2200 2300	37.063 38.290 39.356	37.192 38.404 39.453	37.319 38.517 39.547	37.446 38.628	37.571 38.738	37.694 38.845	37.816 38.951	37.937 39.055	38.056 39.158	38.174 39.258

●WRe5/26 thermocouple reference table (mV)

℃	0	10	20	30	40	50	60	70	80	90
0 100 200	0.000 1.451 3.089	0.135 1.607 3.261	0.272 1.765 3.434	0.412 1.925 3.609	0.554 2.087 3.785	0.698 2.250 3.962	0.845 2.415 4.140	0.993 2.581 4.319	1.144 2.749 4.500	1.296 2.918 4.681
300 400 500	4.863 6.731 8.655	5.047 6.921 8.849	5.231 7.112 9.044	5.416 7.304 9.239	5.601 7.496 9.434	5.788 7.688 9.629	5.975 7.881 9.824	6.163 8.074 10.019	6.352 8.267 10.215	6.541 8.461 10.410
600 700 800	10.606 12.558 14.494	10.801 12.753 14.686	10.997 12.947 14.877	11.192 13.142 15.069	11.388 13.336 15.260	11.583 13.529 15.450	11.778 13.723 15.640	11.974 13.916 15.830	12.169 14.109 16.020	12.364 14.302 16.208
900 1000 1100	16.397 18.257 20.066	16.585 18.440 20.244	16.773 18.623 20.421	16.960 18.805 20.598	17.147 18.987 20.774	17.333 19.168 20.950	17.519 19.349 21.125	17.704 19.529 21.299	17.889 19.709 21.473	18.073 19.888 21.647
1200 1300 1400	21.819 23.514 25.148	21.991 23.680 25.308	22.163 23.846 25.468	22.334 24.010 25.627	22.504 24.175 25.785	22.674 24.339 25.943	22.843 24.502 26.100	23.012 24.664 26.256	23.180 24.826 26.412	23.347 24.988 26.568
1500 1600 1700	26.722 28.236 29.688	26.876 28.384 29.830	27.030 28.531 29.971	27.183 28.678 30.112	27.335 28.824 30.252	27.486 28.969 30.391	27.637 29.114 30.530	27.788 29.259 30.668	27.938 29.402 30.805	28.087 29.546 30.942
1800 1900 2000	31.078 32.404 33.660	31.214 32.533 33.782	31.349 32.661 33.902	13.483 32.788 34.022	31.617 32.915 34.142	31.749 33.041 34.260	31.882 33.166 34.378	32.013 33.291 34.494	32.144 33.415 34.610	32.274 33.538 34.725
2100 2200 2300	34.839 35.932 36.922	34.953 36.036 37.015	35.065 36.138 37.107	35.177 36.240	35.288 36.341	35.397 36.441	35.506 36.539	35.614 36.637	35.721 36.733	35.827 36.828