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CTL中有这么一句话：
) U7 v* @* s4 B2 DThermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, “T”
, _6 i" ]7 N# K8 d- H6 O9 C/ H& ~and “ J”, premium grade, are recommended.+ i8 B- e! X! q, z6 w! C
Switching power supplies present an electrically noisy environment for test instrumentation. When
( J- Y) I" m5 t# ?measuring temperatures on and within switching power supplies, thermocouples are in the immediate; f* ~. C; Q4 m+ }
vicinity or in intimate contact with component sources of the electrical noise. Type J thermocouples are: A4 S j: Y. X6 i
made of material that is magnetic. Type K thermocouples are made of material that is slightly magnetic.
5 x& Q5 R T {2 @+ rType T thermocouples are made of non magnetic materials. As a result Type T thermocouples are+ l2 }1 R; c4 U& ?# |
affected less by the high frequency magnetic fields present and give more accurate results.
8 I, _5 g' P& f( B, [; h
1 B$ c2 L% ?# Z/ p) \: A* d也就是说实验室尽量要用T type热电偶? |
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发表于 2012-7-15 13:10
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