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CTL中有这么一句话：8 C. T; `) b! t% s* k7 b( r8 n2 j1 X/ v
Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, “T”9 @9 w: P( h* f9 Z k
and “ J”, premium grade, are recommended.2 _9 v& c) W" b
Switching power supplies present an electrically noisy environment for test instrumentation. When" g F; d/ f3 z4 ]( ~1 a( l# q( T
measuring temperatures on and within switching power supplies, thermocouples are in the immediate
+ w3 w. v+ V# d [) |2 h1 Nvicinity or in intimate contact with component sources of the electrical noise. Type J thermocouples are
. V+ Y1 {3 i1 e$ T. u4 S, Wmade of material that is magnetic. Type K thermocouples are made of material that is slightly magnetic.4 `5 n" a3 B y2 H D
Type T thermocouples are made of non magnetic materials. As a result Type T thermocouples are
: m# I8 t& c& J- Y. eaffected less by the high frequency magnetic fields present and give more accurate results.
/ }4 \0 U4 S5 ~& T$ }$ i% M+ S8 T$ S9 J
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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