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CTL中有这么一句话：
8 X) X% c8 D* ^Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, “T”
; N9 W( q/ g' ]and “ J”, premium grade, are recommended.
+ R/ g# D1 ]# l0 s0 gSwitching power supplies present an electrically noisy environment for test instrumentation. When7 [- K. H$ |5 o; V. c) e8 s
measuring temperatures on and within switching power supplies, thermocouples are in the immediate
. M8 b, `& W( s5 J) rvicinity or in intimate contact with component sources of the electrical noise. Type J thermocouples are
5 e/ L7 o8 ~9 I# O3 Kmade of material that is magnetic. Type K thermocouples are made of material that is slightly magnetic./ H0 f. t+ p1 a4 h
Type T thermocouples are made of non magnetic materials. As a result Type T thermocouples are; M$ [8 U% N0 h0 ?' E# L; H
affected less by the high frequency magnetic fields present and give more accurate results.
7 L3 @! r4 Q( n4 s) q
2 Z, ?% b9 W+ }, P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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