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CTL中有这么一句话：) ?* o2 ?( R! M, R( V4 t% ^
Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, “T”7 }3 v( S# G' C' h8 C/ @' `- w
and “ J”, premium grade, are recommended.
2 I6 P9 M* F& ~0 L! {. ]& PSwitching power supplies present an electrically noisy environment for test instrumentation. When
0 ^! i5 |( I% z3 {% lmeasuring temperatures on and within switching power supplies, thermocouples are in the immediate
' D0 ~/ q) b6 }: P7 r% ]9 {vicinity or in intimate contact with component sources of the electrical noise. Type J thermocouples are
/ ]; s4 _+ K6 Q6 Ymade of material that is magnetic. Type K thermocouples are made of material that is slightly magnetic.) V, x5 r# ~, v) K% g
Type T thermocouples are made of non magnetic materials. As a result Type T thermocouples are
' ]( w1 p1 a$ [" d' m% ?6 vaffected less by the high frequency magnetic fields present and give more accurate results.0 s. e* P! m! e Q2 K4 r
) O5 m" z. T, O9 `+ F
也就是说实验室尽量要用T type热电偶? |
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发表于 2013-8-29 09:03
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