DSH 546 Relative humidity

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小型摆管淋雨试验机

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IEC60335试验指甲

DSH 546

Relative humidity 0 Z3 u+ V& c. q) q( E5 I% n

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) ! S4 K7 B8 e5 p* I$ i3 a. a. E# b

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

% ]0 v+ p1 A2 X. C& m3 r: D5 _Standard(s):
  R: o& ?9 p4 H0 f! eIEC 60065/2001
IEC 60335-1/2001
5 @: M+ i3 |8 v3 Z& |  P4 @2 ?IEC 60601-1/1988 + A2/1995
IEC 61010-1/2001
Sub clause(s):
0 L! ]. {2 u$ x' B10.2
4 Y" ?2 d6 T. L/ ~3 U3 X15.3
4.10
( p- K+ p& E& e( x  @' T$ E. q% k6.8.2
: h/ _* V- S6 hSheet N°:
4 Z! E5 a( I) W# Y7 _. l2 X5 V7 DDSH - 546
Subject: Relative humidity Key words:
# \) j3 r, X$ x- Relative humidity
6 f# T4 K% m+ ]$ F: @9 R- Range
- Percentage
& W8 i9 |& T2 \' |, J( s% q2 u- IECEE-CTL/193/INF
Decision taken at the
41st CTL meeting.
! Z% H9 I* B4 ]0 M2 GQuestion:
. s8 a, F7 F7 G% @4 g# tVarious IEC standards require that specific tests be performed in a humidity chamber. The
5 e4 s6 y; I. h4 d& s) sspecification of the relative humidity is in several formats. How should the tolerance on the
relative humidity specification be interpreted?
Decision:
(1) Unless clearly noted otherwise, the tolerance specified for humidity is considered to
be in percent relative humidity, % RH.
  M( R4 ?$ Z4 a: \0 v! r: m(2) It is intended that the set point of the humidity chamber controller be set within the
* a& u& S# E& M# V5 x8 X- Zspecified range and that the humidity remains within the specified range.
9 ~5 v9 L( N% c) I(3) Confirmation that humidity is within the specified range shall be made by a humidity
  B( H5 J1 t/ I9 u! k/ X# }measuring instrument according to CTL DSH 251A.

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