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标题: DSH 422 Temperature limit applied part [打印本页]

作者: 小米    时间: 2012-11-5 11:00
标题: DSH 422 Temperature limit applied part
DSH 4220 `% W( z. ?, k$ S$ Z* W7 e: j  B# Z

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Temperature limit applied part2 \/ k5 s1 L1 q& S
42, 42.32 q5 ^/ O/ R" x0 g* T9 M" K
60601-1(ed.2);am1;am2* n# \$ l' [+ b6 E2 D

3 q; q' @& H/ R$ u$ Z; R2 y+ mStandard(s)- (year and edition):. ?; ?# u+ s! u
IEC 60601-1:1988 Ed.2 Am1+Am2
( Y4 j+ S2 O$ w1 A( y: ySub clause(s): 42, 42.33 K( X% s) y4 S# s0 P& y4 K
Sheet n°: DSH-422  I" g3 b4 w: |, O: ]& V
Subject: Temperature limit applied part
. \' P9 ^, v) J/ bKey words: Temperature limit, applied part, ambient.* `5 ?+ W1 k2 c/ A* h' H. W  Z
Confirmed by CTL at its 39th meeting, in Cologne
9 A% ~5 r! J9 P% ]4 R& O8 y" VQuestion:: m8 I/ I* A. S. c
It is not clear at what ambient temperature the limit of 41 °C should be applied. The
$ }1 x0 M: t4 u1 i6 Jtemperature range of 10 °C to 40 °C stated in Sub-clause 10.2 applies to Table Xa and would& p: P- ^$ {7 r4 V$ ?5 [+ H1 n
appear to apply in this instance. Is a 1 °C temperature difference correct or realistic?
4 r' ~2 Y- ^! o% ?Decision:7 \, ~. v& K- W$ `# H. B% J) e
When not otherwise specified by the manufacturer, the limit of 41 °C at an ambient" h& z4 ?! x3 {1 V% T
temperature of 40 °C must be applied in NORMAL CONDITION or SINGLE FAULT
' x  B: k" V# O% I* ?: v2 UCONDITION except were there is a medical justification for a higher limit/temperature rise.
3 s. j5 I0 T& `. Q9 pThis requirement should be addressed in Particular Standards.8 \: Y' `; s1 z( B& O* p4 s6 c5 B

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