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CTL中有这么一句话：' }1 i) h+ k, J
Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, “T”
( o9 k' {$ a) \5 ?: Eand “ J”, premium grade, are recommended.1 @1 f1 a3 ~5 p+ L2 Z7 R2 ~
Switching power supplies present an electrically noisy environment for test instrumentation. When4 L, ^# D! R) o5 H& ?' f- {6 N
measuring temperatures on and within switching power supplies, thermocouples are in the immediate7 y1 e2 P% H. D; h$ V0 {
vicinity or in intimate contact with component sources of the electrical noise. Type J thermocouples are m3 ^# r ?- x* K
made of material that is magnetic. Type K thermocouples are made of material that is slightly magnetic.
6 b. G4 {9 N4 y- mType T thermocouples are made of non magnetic materials. As a result Type T thermocouples are
O4 [, [- z3 j; P, h7 z( aaffected less by the high frequency magnetic fields present and give more accurate results.
( h- j. i7 [. r/ Y- h: d6 i7 f8 G4 m2 i8 S$ X* S
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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