DSH 546 Relative humidity

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小型摆管淋雨试验机

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灯具防风罩

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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

, O! K; _$ A$ X$ Z

DSH 546 $ s# A5 j- r0 j! Q6 @% N3 ?

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) ( x7 j; V: R" S2 K) A  [% Q

60335-1(ed.4) & 61010-1(ed.2) & 60601-1(ed.2);am1;am2 & 60065(ed.7) 0 z  @- g* P& A" l* W# c0 E+ Y

3 G8 c# X6 v6 j' d6 sStandard(s):
9 V! x/ O9 u8 e1 ]6 u$ C9 U* F3 YIEC 60065/2001
IEC 60335-1/2001
' h# G* L$ V; B/ B. [9 pIEC 60601-1/1988 + A2/1995
IEC 61010-1/2001
- ?5 y' U9 ~) M: D" b, H8 ySub clause(s):
: G5 N, X8 L) E/ \1 M0 y9 w! h10.2
+ ]# e7 L1 r7 T: J) A% v15.3
4.10
6.8.2
' x) {4 d; B3 `# S2 `/ I: ESheet N°:
DSH - 546
: p$ O$ K" I3 z$ I4 USubject: Relative humidity Key words:
' g# U4 M9 ^2 t' J  a/ C9 z/ ?- Relative humidity
- Range
" _+ l' n: z6 s: a- Percentage
- IECEE-CTL/193/INF
/ _  y8 m& J  S. cDecision taken at the
! z# R, l9 q; @! L7 Q4 D% W4 d# d41st CTL meeting.
* Y* A0 K1 a! X% i2 o; J5 H& ~! |Question:
% x; ^( ]4 X! H# S  o1 J  yVarious IEC standards require that specific tests be performed in a humidity chamber. The
$ z  U( v3 z$ U0 l4 z9 Cspecification of the relative humidity is in several formats. How should the tolerance on the
relative humidity specification be interpreted?
Decision:
9 J; k; U; n$ w: R$ O, [( y0 F(1) Unless clearly noted otherwise, the tolerance specified for humidity is considered to
be in percent relative humidity, % RH.
4 R$ e% W6 n4 u8 x* B& K(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.
(3) Confirmation that humidity is within the specified range shall be made by a humidity
measuring instrument according to CTL DSH 251A.