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CTL中有这么一句话:
4 l7 ]( R# D* Z0 y, EThermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, “T”
/ S3 v9 U& e3 H0 Uand “ J”, premium grade, are recommended.* |/ v' n5 R6 s" [/ H
Switching power supplies present an electrically noisy environment for test instrumentation. When+ {) _8 c e& [/ j
measuring temperatures on and within switching power supplies, thermocouples are in the immediate
; a1 C. S; \1 H2 v# Y* svicinity or in intimate contact with component sources of the electrical noise. Type J thermocouples are
2 ` Q" y- e: j+ b" l6 M* I# rmade of material that is magnetic. Type K thermocouples are made of material that is slightly magnetic.$ R' F6 p. t) b( P
Type T thermocouples are made of non magnetic materials. As a result Type T thermocouples are
7 l! t9 z0 A' G! G* F) h$ Yaffected less by the high frequency magnetic fields present and give more accurate results.
7 |0 i$ v* a# m* ~- c, k- O; Q5 b# ~6 @ u
也就是说实验室尽量要用T type热电偶? |
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