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CTL中有这么一句话：4 g8 o3 ]: y( M( X7 m' x2 W# o
Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, “T”# a4 m( ], _/ b/ B% ]. j
and “ J”, premium grade, are recommended.
# }/ e% J+ \9 `0 G: K- WSwitching power supplies present an electrically noisy environment for test instrumentation. When
0 ?+ _8 l$ h6 C. _% [! wmeasuring temperatures on and within switching power supplies, thermocouples are in the immediate
- |$ T* ]( c- s% D# w' h1 j+ k, e' }vicinity or in intimate contact with component sources of the electrical noise. Type J thermocouples are
3 m2 ?4 r, o# T8 amade of material that is magnetic. Type K thermocouples are made of material that is slightly magnetic.
2 ?5 H4 D" i$ t4 J% i3 FType T thermocouples are made of non magnetic materials. As a result Type T thermocouples are
$ v2 n( ^1 {+ X2 O: paffected less by the high frequency magnetic fields present and give more accurate results.
3 ~& \( H. J6 a( i! S( i
6 i5 r! e: i0 i' [3 z; q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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