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CTL中有这么一句话：
, ^* \4 d7 ] f5 t, m' Y | Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, “T”$ Q& l7 r$ t; r. ?* b# V
and “ J”, premium grade, are recommended.
/ c( c1 p5 j, U6 x8 }8 O4 G9 ^3 P Switching power supplies present an electrically noisy environment for test instrumentation. When' h2 \# r& F1 U" G
measuring temperatures on and within switching power supplies, thermocouples are in the immediate
: A" Q4 i2 c% n+ ^9 w/ H( S vicinity or in intimate contact with component sources of the electrical noise. Type J thermocouples are6 `; t( s# b" g; D( q' E
made of material that is magnetic. Type K thermocouples are made of material that is slightly magnetic.
2 n6 G/ o6 a" O0 v Type T thermocouples are made of non magnetic materials. As a result Type T thermocouples are
" l7 h0 U% ^% R' u) Z) e affected less by the high frequency magnetic fields present and give more accurate results.
+ b. |; [) y. T9 ~% _2 a; s& q; E- I" @% X; h+ a
也就是说实验室尽量要用T type热电偶?
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发表于 2017-3-9 16:01
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