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GW Instek GOM-804 - Page 156

GW Instek GOM-804
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GOM-804 & GOM-805 使用手册
1 56
介绍
选配的 PT-100 为铂金传感器,符合德国
DIN43760: 1968 3 线测量规格。
它属于工业常见的温度传感器。这些传感器的标
称电阻是 100@0˚C
PT-100 温度与电阻之间的关系,见如
Gallendarvan Dusen 等式:
R
RTD
=R
0
[1+AT+BT
2
+CT
3
(T-100)]
其中: R
RTD
RTD
R
0
RTD 电阻@0˚C
T ˚C
A=alpha [I+(delta/100)]
B=-I(alpha)(delta)(Ie-4)
C=-I(alpha)(beta)(Ie-8)
PT-100 Alpha (A), Beta (B), Delta (D)值如下:
Type
Standard
Alpha
Beta
Delta
@ 0˚C
PT-100
ITS90
0.003850
0.10863
1.49990
100Ω

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