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标题: DSH 546 Relative humidity [打印本页]
作者: 小米    时间: 2012-9-9 15:40
标题: DSH 546 Relative humidity
DSH 546
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) V: z& R0 }; A" U! R		Relative humidity8 ?' [" ?: |1 D( t, b5 g7 K; n3 |
10.2 (IEC 60065/2001) 15.3 (IEC 60335-1/2001) 4.10 (60601-1/1988 +A2/1995) 6.8.2 (IEC 61010-1/2001)
" F9 @/ B4 I' g" K9 T7 G		60335-1(ed.4) & 61010-1(ed.2) & 60601-1(ed.2);am1;am2 & 60065(ed.7)
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5 M$ G/ F+ Y. A/ U: T2 a, OQuestion:- H) [0 F7 h" ?0 P
Various IEC standards require that specific tests be performed in a humidity chamber. The+ G, v- I0 N+ _  o& d8 ~% Z# c+ y
specification of the relative humidity is in several formats. How should the tolerance on the
( M7 m' Z3 H4 vrelative humidity specification be interpreted?
; v8 f  E% h7 L9 rDecision:1 z# a& G/ A1 [
(1) Unless clearly noted otherwise, the tolerance specified for humidity is considered to+ j+ Q) }& }3 g5 T1 q
be in percent relative humidity, % RH.$ \* Q& A# P# B6 A- ?8 K/ x
(2) It is intended that the set point of the humidity chamber controller be set within the
# ]5 Z$ G% G7 o2 ^0 Tspecified range and that the humidity remains within the specified range.8 K2 E7 e3 T9 |$ r6 C; q
(3) Confirmation that humidity is within the specified range shall be made by a humidity/ I) S3 R" u. f0 k$ _8 K' @  s+ o9 b
measuring instrument according to CTL DSH 251A.4 }# C% `5 |  C3 G8 g! w
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