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CTL中有这么一句话:& o" \! `0 `) I7 Q
Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, “T”
' C0 F: g4 I7 Z+ \$ ~2 N! Vand “ J”, premium grade, are recommended.
x, ~* J( ]3 A- RSwitching power supplies present an electrically noisy environment for test instrumentation. When
. {1 I2 I# ]3 f" \measuring temperatures on and within switching power supplies, thermocouples are in the immediate1 X: Q* s' c q# @! t7 h
vicinity or in intimate contact with component sources of the electrical noise. Type J thermocouples are* U; H& y! p+ W6 v; R9 K
made of material that is magnetic. Type K thermocouples are made of material that is slightly magnetic.
2 ~" s* m3 X6 bType T thermocouples are made of non magnetic materials. As a result Type T thermocouples are
1 C% V3 M' m) {" y# t7 a% gaffected less by the high frequency magnetic fields present and give more accurate results.
' w9 {9 u, G0 E2 q' _8 V( l) q7 r/ T/ B/ |# j
也就是说实验室尽量要用T type热电偶? |
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