|
|
本帖最后由 chinatown 于 2017-1-6 13:48 编辑 7 n- U9 j: c- b6 E) G. q, Y8 v
! n$ p8 Q$ t: u; t# o
IEC 60216-4-1 is a standard providing requirements for ovens for aging tests and requires forced gas
$ _2 G9 F3 v" ^8 H. D8 O$ gventilation. As the ball pressure test is not considered to be an ageing test such forced gas ventilation
4 n# n0 b# X, L' `- }3 w% K6 @is not required and should not be confused with forced convection.
/ i" N; C3 [9 d* c! E4 R9 fFor the purpose of ball pressure testing chambers with or without forced convection may be used,2 X& a- O( F6 m9 T
provided all other requirements are fulfilled.
& x) s" u* Y L; G4 BFollowing clause 5.2 of the standard and considering the note there, a separate thermocouple on or1 k* u' G* u% g. O8 F. g4 i
right below the surface of the test specimen support and as close as practical to the test sample shall. M' U7 R# b7 ^0 v, \7 B) C% C# X! i
be used to check that the temperature of the test specimen support does not significantly deviate from* L1 y6 V8 n- `# P. j5 C
the test temperature.
! [2 `6 D- j- `2 H( RIn addition measure the air temperature as close as possible to the test specimen.
% m. h8 i" i q: }: P& aIn case of non-round indentation obtained, report the biggest diameter measurement observed. The0 [( c# ^; l) @+ X% d
maximum difference between the longest and shortest measurement should not exceed 0,2 mm.
* I @' Z2 B q% b3 `Where the product standard contains differing or conflicting requirements to IEC 60695-10-2 or to this
$ b5 `8 M6 Z+ K* jdecision sheet these product standard requirements override the requirements from IEC 60695-10-2
?0 m5 U0 x" B4 J+ K6 yand this decision sheet.* y' [, W1 K+ K" a* C
# T1 D; u5 f) c& p+ T
# V+ O9 Y. s. L
+ J' |) T9 o, M. n
, w) B# }- |% @0 h f% s 8 u, c) ]9 ?5 v5 f
. ~# j8 F, z3 w5 L r
|
本帖子中包含更多资源
您需要 登录 才可以下载或查看，没有账号？注册安规
x
|
/2 
|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 2017-1-6 13:46
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡