|
|
8.3.17 The junction of the thermocouple is to be firmly secured with the point on the surface on which the
$ S4 ]% B% u% T! Ltemperature is to be measured. The thermocouple is to consist of wires not larger than 24 AWG (0.21( z4 P' ~5 {& M" {8 w3 r6 e# Q
mm2) and not smaller than 30 AWG (0.05 mm2). Thermocouples consisting of 30 AWG (0.05 mm2) iron6 \4 b* b; V; q) d( R i. D& F
and constantan (Type J) wires, are to be used whenever a referee temperature measurement by
. V- o+ v9 r, E" Xthermocouples is necessary. Thermocouples consisting of chromel-alumel (Type K) or copper-constantan
7 _0 S5 s; V1 W) z(Type T) wires may be used if it is determined that high frequency operation results in eddy current
' M: p( Q' O& Aheating of iron and constantan thermocouples.
! N& X; s' } ]3 f* H4 k. Q$ F6 Y# Z. u. F0 J
9 f2 E7 ^: n8 m% j1 d! x1 ^9 ^, T. O) w7 w" W7 w8 }
UL8750有具体要求。 |
|
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 )
窥视卡
雷达卡
发表于 2011-9-16 12:58
显身卡
楼主
发表于 2015-6-1 14:19
