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CTL中有这么一句话：
% m) v+ B% d3 ?2 n' Y. l* CThermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, “T”
: n' t5 d! C, r+ b+ yand “ J”, premium grade, are recommended.
, p5 E) ~1 ^9 h5 sSwitching power supplies present an electrically noisy environment for test instrumentation. When
! J3 e8 W6 U0 {measuring temperatures on and within switching power supplies, thermocouples are in the immediate
6 e; j# E- I! R& @$ V2 m' fvicinity or in intimate contact with component sources of the electrical noise. Type J thermocouples are
( G2 G7 [) z$ u7 O) Q7 F$ A. w. h, |# Ymade of material that is magnetic. Type K thermocouples are made of material that is slightly magnetic.
; t/ {1 ?0 Q! GType T thermocouples are made of non magnetic materials. As a result Type T thermocouples are, j" t- h9 g( R4 c
affected less by the high frequency magnetic fields present and give more accurate results.- \' k) q9 m: w1 W) P( P0 n; y
# _; M% [3 b ^- Z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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