DSH 546 Relative humidity

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IEC60335试验指甲

DSH 546 0 V: K9 a( [. J( I# n1 J

Relative humidity 0 w( K/ {3 a5 ?3 t, q; R

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)

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

& t9 }  c5 N2 ]0 r  m# lStandard(s):
) u% K( z8 M, q7 @3 CIEC 60065/2001
9 A) c! F- k0 VIEC 60335-1/2001
IEC 60601-1/1988 + A2/1995
& d3 w+ M* M  K; f% T" G/ U7 zIEC 61010-1/2001
Sub clause(s):
10.2
  b& l: L; B& U15.3
4.10
) W9 M" l. Y+ Z3 S+ [6.8.2
Sheet N°:
DSH - 546
Subject: Relative humidity Key words:
- Relative humidity
- Range
- Percentage
; O4 z2 E& `" i- IECEE-CTL/193/INF
Decision taken at the
8 ?- N/ V/ S0 I% ?  N6 u9 ^41st CTL meeting.
) I' I6 m6 Z: bQuestion:
8 S/ b1 i9 c8 R3 K; FVarious IEC standards require that specific tests be performed in a humidity chamber. The
& b( e5 O1 [8 b% vspecification of the relative humidity is in several formats. How should the tolerance on the
relative humidity specification be interpreted?
! f. t! {/ f% O: y+ ZDecision:
(1) Unless clearly noted otherwise, the tolerance specified for humidity is considered to
+ K6 o9 H1 D, W% C$ @2 `+ s! r  nbe in percent relative humidity, % RH.
(2) It is intended that the set point of the humidity chamber controller be set within the
3 E+ h+ G" o, [" E# r$ {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
1 y3 `& @6 }/ d- |6 H4 gmeasuring instrument according to CTL DSH 251A.


% W2 M$ ?0 D- C4 A5 ]* [