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|
|  DSH 546
( K5 ~5 x" z; W$ O" B& p' y! k
) _0 P( G5 R% c3 |/ x4 t | Relative humidity: a, R' q9 N, c4 z( K2 |3 @
| 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)( b: E' D/ d# ^: d
| 60335-1(ed.4) & 61010-1(ed.2) & 60601-1(ed.2);am1;am2 & 60065(ed.7)
& i6 t4 b6 ]6 x4 K |
. p# ?' {7 Y( ZQuestion:
1 F" B! ]; H% R+ W; Y: p4 n( n' g8 MVarious IEC standards require that specific tests be performed in a humidity chamber. The
8 r& ~1 z5 A, p7 Q5 bspecification of the relative humidity is in several formats. How should the tolerance on the+ W3 m+ A% j, y- A$ n! s4 A/ K
relative humidity specification be interpreted?+ V$ u4 Q& M8 O! V
Decision:
" z) ^: M. x8 V. ^2 G- c9 O/ x(1) Unless clearly noted otherwise, the tolerance specified for humidity is considered to8 y+ c1 S" t% ]- h( A1 K
be in percent relative humidity, % RH.1 ~. X* X" c1 u: H+ g7 L$ O
(2) It is intended that the set point of the humidity chamber controller be set within the
; b# R" q+ D U: f, Xspecified range and that the humidity remains within the specified range.) B f0 d" r' P, y3 _
(3) Confirmation that humidity is within the specified range shall be made by a humidity% i: p1 s- C+ ^+ ?4 }/ A
measuring instrument according to CTL DSH 251A.
( w- K+ H! v: o* V
% d, b( C. Q4 @& S& k% L) j! s9 H0 Z$ ~( N' r, j0 q% b5 }0 s$ M
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发表于 2012-9-9 15:40
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