DSH 546 Relative humidity

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小型摆管淋雨试验机

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家电125mm试验指

E12灯头量规

无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

DSH 546 7 t+ K$ D* ?2 B" r

Relative humidity # Y8 y: p0 l3 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) ) O7 x9 h5 d) D) T: [$ f/ |* z

60335-1(ed.4) & 61010-1(ed.2) & 60601-1(ed.2);am1;am2 & 60065(ed.7) ) ~2 H' j; u0 l, M/ j8 t4 Z1 n

% }5 ?( v3 r, aStandard(s):
IEC 60065/2001
8 [) @/ u1 q/ o# _7 @IEC 60335-1/2001
  ], D# G; A3 j9 c2 g# h# X) M1 OIEC 60601-1/1988 + A2/1995
3 g: l% g( a2 q9 }: ?. \; @IEC 61010-1/2001
Sub clause(s):
10.2
15.3
: E' Q: c3 v& t% P2 b2 D* G7 w4.10
6.8.2
; X& w( U% e  k5 K+ P1 SSheet N°:
DSH - 546
Subject: Relative humidity Key words:
- Relative humidity
- Range
- Percentage
- IECEE-CTL/193/INF
Decision taken at the
+ e4 Y$ S" \7 `1 ?8 ]1 J' x6 I, ?41st CTL meeting.
) D  U$ I% D' U6 Q+ |# wQuestion:
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?
$ V0 e/ D4 `; PDecision:
(1) Unless clearly noted otherwise, the tolerance specified for humidity is considered to
. l3 m( w; U+ T8 x) Y5 dbe in percent relative humidity, % RH.
(2) It is intended that the set point of the humidity chamber controller be set within the
' y( z, H! G# y6 j7 B( Q1 dspecified 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.