DSH 546 Relative humidity

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IEC60335试验指甲

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DSH 546

Relative humidity - `. ^& z# K" N& y9 a5 s4 I

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) * h. l$ t' j# S- w1 I- ]

60335-1(ed.4) & 61010-1(ed.2) & 60601-1(ed.2);am1;am2 & 60065(ed.7) : A' o1 r% \3 I$ i! g2 b+ J+ s

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Standard(s):
IEC 60065/2001
# `) c. Y3 F8 xIEC 60335-1/2001
( a# Y& D' |# A6 j5 l7 n( b. T$ u# E3 bIEC 60601-1/1988 + A2/1995
& W5 H( l& U: |. u5 E8 CIEC 61010-1/2001
, Z8 W; B" M- H1 ]1 t1 W5 mSub clause(s):
1 v/ k; ?7 ?2 W& h- x. L10.2
15.3
$ a; Y( ]2 _0 J) U7 n5 e4.10
6.8.2
Sheet N°:
2 z) h+ V6 @& a4 {5 iDSH - 546
# v. }$ E# n5 e/ jSubject: Relative humidity Key words:
- Relative humidity
6 U  m' U) u/ i. |$ `: B: Q- Range
( C  M* p2 t' j  ~" x- Percentage
0 L5 e# o4 U: U  l8 t- IECEE-CTL/193/INF
Decision taken at the
41st CTL meeting.
Question:
Various IEC standards require that specific tests be performed in a humidity chamber. The
% L$ M. J9 H8 x( r' S: Uspecification of the relative humidity is in several formats. How should the tolerance on the
relative humidity specification be interpreted?
. l3 X( \" w  D, ?3 z% b2 F+ s8 lDecision:
) @8 Y1 X2 \1 v9 Y(1) Unless clearly noted otherwise, the tolerance specified for humidity is considered to
be in percent relative humidity, % RH.
(2) It is intended that the set point of the humidity chamber controller be set within the
specified range and that the humidity remains within the specified range.
8 o3 K" w% k- ^' L(3) Confirmation that humidity is within the specified range shall be made by a humidity
measuring instrument according to CTL DSH 251A.


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