|
|
CTL中有这么一句话:9 G+ u8 c [; K8 X, Q8 Z
Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, “T”; ^# Y, o8 a |1 s% p
and “ J”, premium grade, are recommended.
/ j6 R( C# J' e5 e( d8 TSwitching power supplies present an electrically noisy environment for test instrumentation. When
8 T' N5 Z* |! |measuring temperatures on and within switching power supplies, thermocouples are in the immediate
2 G: p3 y' C e! x8 k* G9 Z# Hvicinity or in intimate contact with component sources of the electrical noise. Type J thermocouples are, {' A! \' O x3 i0 H& K8 x' y
made of material that is magnetic. Type K thermocouples are made of material that is slightly magnetic./ u9 X8 f' W3 p/ m7 a
Type T thermocouples are made of non magnetic materials. As a result Type T thermocouples are" x4 r6 q! z4 o0 h
affected less by the high frequency magnetic fields present and give more accurate results.
1 g X$ F) D5 j" }, `4 K6 L7 d
也就是说实验室尽量要用T type热电偶? |
|