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CTL中有这么一句话：9 E: @& c2 ~$ O ^% J' r
Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, “T”
( d8 W8 d4 L7 X( |5 v% Oand “ J”, premium grade, are recommended.5 |' S6 \- G) p6 `0 W7 c9 |1 w' W2 G
Switching power supplies present an electrically noisy environment for test instrumentation. When
* Y4 ?0 ]5 h' a1 M A8 {. n. cmeasuring temperatures on and within switching power supplies, thermocouples are in the immediate% E; p- U& U' m
vicinity or in intimate contact with component sources of the electrical noise. Type J thermocouples are
) F4 M# Z7 N9 a# Lmade of material that is magnetic. Type K thermocouples are made of material that is slightly magnetic.0 K: v) y+ ^) R7 J" Z% H+ D
Type T thermocouples are made of non magnetic materials. As a result Type T thermocouples are
; a2 m& v* P* B5 P$ kaffected less by the high frequency magnetic fields present and give more accurate results.+ }4 E4 |8 q! r3 t$ E
' t5 B% ?% q. ^& d" n4 l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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