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| DSH 546
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| 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)
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% }5 ?( v3 r, aStandard(s):) p2 `) p& G* \- p
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) M& v; ?. ]6 r0 p! b
Sub clause(s): Z# M' t6 A7 ?& c7 I0 T
10.2& S9 _* }, ^9 @6 K
15.3
: E' Q: c3 v& t% P2 b2 D* G7 w4.102 ^. S: u* o3 H; I( X2 I _
6.8.2
; X& w( U% e k5 K+ P1 SSheet N°:, h5 c& d. i4 l# C- x
DSH - 546' P$ [" }7 X* p. f! b. ]
Subject: Relative humidity Key words:1 l) p& ~) r; b% G7 M& ?
- Relative humidity' L' t& I' T$ p3 K
- Range: a* b0 X' \& E5 K) w5 c4 ]4 V# H
- Percentage8 M. `7 `$ c+ ?$ u+ O
- IECEE-CTL/193/INF% D: ?/ X5 k" l' A& P
Decision taken at the
+ e4 Y$ S" \7 `1 ?8 ]1 J' x6 I, ?41st CTL meeting.
) D U$ I% D' U6 Q+ |# wQuestion:1 L# Z3 f( s0 ~% {
Various IEC standards require that specific tests be performed in a humidity chamber. The2 u6 G+ t& s4 O a
specification of the relative humidity is in several formats. How should the tolerance on the5 z) r0 s- ?! J2 J; o: w" _& [
relative humidity specification be interpreted?
$ V0 e/ D4 `; PDecision:/ {( _# ~% e! x( _
(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.* s: x1 b3 K% }' ^- M% } w
(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.& G- x# ^: |; x/ T
(3) Confirmation that humidity is within the specified range shall be made by a humidity$ ~( N2 e5 v. t* d0 N5 }! r
measuring instrument according to CTL DSH 251A.6 `8 S, ^2 w# @4 X) g" K
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