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标题: DSH 624/07 Humidity test requirements [打印本页]
作者: 小米    时间: 2012-11-8 17:09
标题: DSH 624/07 Humidity test requirements
DSH 624/07
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Humidity test requirements
, ~$ p0 x; y& {3 P9 a# R& |		Various+ Z6 Y* d) S/ O
60335-1(ed.4);am1;am2 & 61010-1(ed.2) & 60601-1(ed.3) & 60950-1(ed.2) & 60065(ed.7);am1) f6 M$ u* w4 L; I
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Standard(s): IEC 60065/2001' g) J5 Z& J( V. x7 Q+ @# H' u
A1/2005
5 b3 \: l# ~, O1 r' u# n0 \IEC 60950-1/20055 l( H' D0 F# @' H: C
IEC 60601-1/20050 x4 I. M( T; q" S- }: J1 V) g/ H. q
IEC 61010-1/2001
) `9 a) I( D; Q* t: GIEC 60335-1/2001
( o. E9 z7 k/ P; hA1/2004( u/ ^- q& X  s. ~2 Q3 h1 H; Q  `& h
A2/2006
1 I3 N8 a# D) jSub clause(s): Various
% X7 ?, f$ ^+ c- {( DSheet N°: 624/07
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+ I/ U. p0 q) rPage: 1(1)# s1 `# J, X3 s1 U
Subject(s): Humidity test
7 R0 N% y+ p5 |9 O6 u% |9 Krequirements- E% f( j) @+ o$ p9 P/ w/ C* x, ^
Key words:" ^% V' _6 a4 z, ^
- 93% RH; R8 Y& P! w: V1 y0 U
- +/-3% RH tolerance1 I" B+ Y' X& n8 X' t" }! O
- 20 – 30°C
, W+ S2 T+ g& X# MMeeting:
2 b! o4 H  r4 U, v4 F0 ?Decision confirmed8 I- E+ a1 h9 `' s4 e- L
at 45th CTL meeting8 j- P# }% N" @* C4 F# P0 \2 F
Question: Various IEC standards have requirements for humidity/temperature
6 G8 U# h2 h  S8 ^$ Dconditioning, but have different specifications for the test conditions.
! S$ ^$ d  Z" r0 \) u! fIEC 60065 – 93 +2%/-3% (t 30°C +0/-2°C)
+ @; L1 R6 s5 g# L: QIEC 60950-1 – 91% - 95% (t 20-30°C +/-1°C)# c: p- o- P0 k/ ~. C
IEC 60601-1 – 93 + 3%/-3% (t 20-30°C)
5 J/ x9 ]" W  Z8 g( |/ I( _* qIEC 61010-1 – 92,5 + 2,5%/-2,5% (t 40°C +/- 2°C)
9 Z  j6 u3 ~" w- r+ ^5 h) `IEC 60335-1 – 93 + 3%/- 3% (t 20-30°C +/-1°C)
. L7 F/ c- e6 H6 p5 tThere does not seem to be a technical justification for the differences in the
2 a% }- J2 v# N  K& R- yspecifications.
5 I( r$ a" n9 T. v4 M8 j1 EAccordingly, it is suggested and recommended that the humidity/temperature* T( C4 \3 `2 U. U
specifications in the above standards be consistent.+ P$ D7 I' p3 b2 c+ M$ ~5 n1 I
Decision: The chamber is to be set at 93% RH, with +/-3% RH tolerance, at a convenient: o' ]* R* i& f
temperature between 20°C and 30°C, but the chosen temperature to be kept6 [/ u$ u. e; N" Q' G
within +/- 2°C during the test.
( I  A: z: k) h8 v# R4 J+ ~The standard specifications for the humidity are to be met at the
( w+ S: q, S% ?% W! ?" T8 A4 I' jreference/measuring point, where the controlling humidity sensor is located.
: [- @1 n  Q3 K0 t; @The tolerances permitted in CTL DSH 251A (+/-6% RH) are allowed in other  u' z& S# o0 X& B& L  t8 `
parts of the humidity chamber, away from the reference point.& t- |  u4 L2 ]
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