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CTL中有这么一句话：
+ Q( ~6 G8 c3 a0 x Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, “T”
. L" f8 v1 g3 p% }3 ]# Z: G) _. Z% C and “ J”, premium grade, are recommended.. t5 }: c$ S: |) V6 r
Switching power supplies present an electrically noisy environment for test instrumentation. When3 T% g' t" ?+ o p
measuring temperatures on and within switching power supplies, thermocouples are in the immediate
, M& l; ^* ~* J! ? vicinity or in intimate contact with component sources of the electrical noise. Type J thermocouples are
& d# f9 Q. t: r made of material that is magnetic. Type K thermocouples are made of material that is slightly magnetic.' _' Z5 a( `7 o+ C' z8 F! j3 V
Type T thermocouples are made of non magnetic materials. As a result Type T thermocouples are
% ~. M4 O% B! X; p# Y affected less by the high frequency magnetic fields present and give more accurate results.
. q" p; n* n. h+ a3 v. Q0 Y1 j* B# M, M7 h# C, v& r7 l! o& c' U
也就是说实验室尽量要用T type热电偶?
6 E* X8 a% |. Y: N |
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发表于 2017-3-9 16:01
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