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CTL中有这么一句话:2 t: T/ O" K( [! n' r8 w0 t
Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, “T”
' h3 j C+ U9 y+ c$ A7 o# [and “ J”, premium grade, are recommended.
: h- m, T) C% j% ]) K) ?' JSwitching power supplies present an electrically noisy environment for test instrumentation. When) N; ~. n1 E, o c! ^5 B8 r
measuring temperatures on and within switching power supplies, thermocouples are in the immediate
7 i* h, v: B5 ]3 W. Lvicinity or in intimate contact with component sources of the electrical noise. Type J thermocouples are5 S+ J# y2 v- ?( i
made of material that is magnetic. Type K thermocouples are made of material that is slightly magnetic.1 w4 S) G- g! Y" {0 ]+ ~0 U
Type T thermocouples are made of non magnetic materials. As a result Type T thermocouples are+ y: V" L* D1 g
affected less by the high frequency magnetic fields present and give more accurate results.
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也就是说实验室尽量要用T type热电偶? |
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