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CTL中有这么一句话:0 ^! {/ h0 D" o% Z" Q* U0 k
Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, “T”
- }( i& R1 g/ W4 K+ J2 mand “ J”, premium grade, are recommended.
1 Z, j% }$ g5 S9 D& @Switching power supplies present an electrically noisy environment for test instrumentation. When0 d& q7 i5 L! J/ R# e
measuring temperatures on and within switching power supplies, thermocouples are in the immediate, Z5 {' u$ @% O8 }4 r
vicinity or in intimate contact with component sources of the electrical noise. Type J thermocouples are
8 R. z' L$ z: C4 A" gmade of material that is magnetic. Type K thermocouples are made of material that is slightly magnetic.
+ _+ \* c! r* C- kType T thermocouples are made of non magnetic materials. As a result Type T thermocouples are, e' V3 m% r* O( d9 F
affected less by the high frequency magnetic fields present and give more accurate results.
; K1 g2 D. a/ l4 K- Z+ _1 ^" S* B, h; k3 R2 E2 ]
也就是说实验室尽量要用T type热电偶? |
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