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CTL中有这么一句话：
2 p8 ^2 U, U9 q6 D, m" z0 b Thermocouple not included in the Instrument accuracy of measuring range. Thermocouples type “K”, “T”
% f9 b1 m' c1 M0 }# U and “ J”, premium grade, are recommended.: T& k& S: ]9 _: t/ F8 b
Switching power supplies present an electrically noisy environment for test instrumentation. When
$ h8 c7 a8 }% j measuring temperatures on and within switching power supplies, thermocouples are in the immediate
# p0 c4 V/ n& P0 l5 L vicinity or in intimate contact with component sources of the electrical noise. Type J thermocouples are. y( F4 G& s1 c# M4 k- _2 L$ [
made of material that is magnetic. Type K thermocouples are made of material that is slightly magnetic./ p4 n$ R) [7 L
Type T thermocouples are made of non magnetic materials. As a result Type T thermocouples are
z: @9 b: t1 D3 x/ l/ V) C: f affected less by the high frequency magnetic fields present and give more accurate results.: B( [9 Y' I; K3 y$ i3 x
& D7 A+ J* v0 p+ H e
也就是说实验室尽量要用T type热电偶?
. I9 Y+ f4 G/ _4 z7 r; `: J( | |
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发表于 2017-3-9 16:01
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