DSH 546 Relative humidity

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IEC60335试验指甲

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DSH 546 ' G" R0 f/ i$ R

Relative humidity

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) 1 V$ A0 {; [, q9 ^

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

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Standard(s):
IEC 60065/2001
IEC 60335-1/2001
IEC 60601-1/1988 + A2/1995
7 [. z; L& H; o3 q: y6 R8 }' QIEC 61010-1/2001
' j2 e4 Q3 D+ c. VSub clause(s):
10.2
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Sheet N°:
DSH - 546
' ?' @  Z. O/ E) s! I& {$ f' [Subject: Relative humidity Key words:
% N  Y( v+ h  w" q" X5 o" l4 F- Relative humidity
" K& _( D7 I( f3 {3 }: {$ w- Range
- Percentage
* a0 \1 k: f+ O( i# h; P' X- IECEE-CTL/193/INF
Decision taken at the
41st CTL meeting.
4 b. K: U; _+ a5 ~4 Q, I% Q3 nQuestion:
5 Y! f! l( B0 _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
; m- P% ?8 n( @/ @4 L" w1 ]relative humidity specification be interpreted?
; N& V; u* ]& e' H0 ^6 ^8 ^( v7 ~: yDecision:
(1) Unless clearly noted otherwise, the tolerance specified for humidity is considered to
& y$ c, X! x8 A  `  O7 Zbe 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.
: m. `, A9 M( g* o& e+ W( b2 R(3) Confirmation that humidity is within the specified range shall be made by a humidity
3 d' |9 d$ o# @* \' I$ Qmeasuring instrument according to CTL DSH 251A.

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