Èȵç×è¸ÐÎÂÔª¼þÔÚ0¡æµÄµç×èÖµ£¨R0£©
·Ö¶ÈºÅPt100¡¡¡¡B¼¶¡¡R0=100±0.12Ω
²¬Èȵç×èµÄµç×èÓëζȹØϵһ°ã¿ÉÓÃÒÔϹØϵ±íʾ£ºÔÚ-79¡«0¡æ·¶Î§ÄÚ
Rt=R0£û1+At+Bt2+C(t-100¡æ)t3£ý
Rt=R0(1+At+Bt2)
Rt Ϊt¡æʱÈȵç×èµÄµç×èÖµ£¨Ω£©
ʽÖеÄR0Ϊ0¡æʱÈȵç×èµÄµç×èÖµ£¨Ω£©
tΪ±»²â½éÖÊζȣ¨¡æ£©
A¡¢B¡¢CµÈ¾ùΪÓйصķֶȳ£Êý
²âÁ¿·¶Î§ºÍ׼ȷ¶È
Èȵç×èÀà±ð
|
ᅦ鼁
|
¾«¶ÈµÈ¼¶
|
²âη¶Î§¡æ
|
ÔÊÐíÆ«²î¡÷t¡¡¡æ
|
WZPÐͱ¡Ä¤²¬Èȵç×è
|
Pt100
|
B¼¶
|
-79¡«600
|
±£¨0.3 +0.005¦òt¦ò£©
|
¡õ Ðͺź͹æ¸ñ
ÐÍ¡¡ºÅ
|
³ß´çmm
|
0¡æ±ê³Æµç×è
|
²âη¶Î§¡æ
|
d
|
b
|
w
|
i
|
ø
|
MWFT-1
|
0.5
|
4
|
2
|
8
|
0.2
|
100Ω
|
-79¡«400
|
MWFT-2
|
0.5
|
10
|
3
|
10
|
0.2
|
100Ω
|
-79¡«500
|
MWFT-3
|
0.5
|
15
|
3
|
10
|
0.25
|
100Ω
|
-79¡«600
|