DSH 546 Relative humidity

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IEC60335试验指甲

DSH 546

Relative humidity ! r/ ?+ z! e( y# C, r9 d

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) 2 B8 g6 @. ?1 A. y+ F/ H. r

60335-1(ed.4) & 61010-1(ed.2) & 60601-1(ed.2);am1;am2 & 60065(ed.7)

Question:
Various IEC standards require that specific tests be performed in a humidity chamber. The
specification of the relative humidity is in several formats. How should the tolerance on the
relative humidity specification be interpreted?
) F( I4 j7 `* g" qDecision:
8 M2 l9 p+ R) e8 a- ?; W8 b5 ~1 F(1) Unless clearly noted otherwise, the tolerance specified for humidity is considered to
0 h( b0 Q' J8 ube in percent relative humidity, % RH.
! `+ m6 i" L: {  b9 I(2) It is intended that the set point of the humidity chamber controller be set within the
' W6 F) S8 r) v. h/ R6 z  X- s8 `" V( s- O& Fspecified range and that the humidity remains within the specified range.
(3) Confirmation that humidity is within the specified range shall be made by a humidity
measuring instrument according to CTL DSH 251A.
5 h1 a+ Q9 Z% ~2 ?# Z0 v
. C3 `% i/ c) `