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|  DSH 546
$ k4 e% w9 z$ [8 q% R( c3 s" L3 A& m' [) W5 ]
| Relative humidity8 i$ h3 `* g. d0 Q0 A4 D
| 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)
; R& c4 h( M0 \ | 60335-1(ed.4) & 61010-1(ed.2) & 60601-1(ed.2);am1;am2 & 60065(ed.7)
7 s8 A1 R+ a/ Y" X2 | |
: G) w- R. c- ?2 j2 V. x
Question:
4 g- P; z, k) b3 N: A* R8 o3 Y1 H: ]Various IEC standards require that specific tests be performed in a humidity chamber. The
: r: U# A, ~4 s6 pspecification of the relative humidity is in several formats. How should the tolerance on the
) {- p' V9 Z$ f: F Hrelative humidity specification be interpreted?
5 g$ F8 x$ D7 r, ^- ^; x# vDecision:* r3 V8 r3 a D% s K, x+ {9 f$ `* \
(1) Unless clearly noted otherwise, the tolerance specified for humidity is considered to
( E" f: H0 _" \8 C8 v& x+ J8 |. Bbe in percent relative humidity, % RH.
* ~! ^( \6 o1 Q2 ~(2) It is intended that the set point of the humidity chamber controller be set within the1 L+ F3 P8 W; h: b7 _! W
specified range and that the humidity remains within the specified range.+ M8 g* b C, C9 N
(3) Confirmation that humidity is within the specified range shall be made by a humidity
9 o4 {: m2 w3 j3 c. ?/ \measuring instrument according to CTL DSH 251A. @4 A& {& p/ K' B
9 O! |9 P+ ?# U" N9 M
+ D4 D* F9 N. `! h& {7 s
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