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|  DSH 429
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| Thermocouple vs. resistance method5 `& A( J; I) y% p
| 42, P1 t" o' h! e3 k6 F
| 60601-1(ed.2);am1;am2
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Standard(s)- (year and edition):; I; N. S2 ?8 }% ]" p( M: J
IEC 60601-1:1988 Ed.2 Am1+Am2
/ Y X) m) W: n+ I( NSub clause(s): 42
5 s; k3 @; l( N* D2 \9 P9 @Sheet n°: DSH-429
4 _/ H! N+ J; G% Y+ t- t' \; mSubject: Thermocouple vs. resistance method
# ?) k E2 R. p; {. c8 GKey words: Temperature, thermocouple, resistance method, windings$ f6 c" U) Z5 ]
Confirmed by CTL at its 39th meeting, in Cologne
: h7 X$ N/ r' `/ qQuestion:% ?4 q6 c$ I$ S j
Use of thermocouple instead of resistance method? Can the allowable values in Table Xa and
- e7 Q- J/ j4 x1 u5 UTable Xb be reduced by 10°C if temperature determined by thermocouples (like IEC 60950
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Decision:. |$ s l3 [: j( p6 m P \
The allowable maximum temperatures given in Table Xa and Table Xb apply, regardless of the/ L/ R! l; c5 j/ ?% b4 Y1 L& w* z
test method. However, the systematic errors and uncertainties in any measurement must be4 \" n* f% y( f. W$ U
considered when comparing the measured value to the required value. COR method should
8 |1 ]1 r% W! ~! t4 Rbe utilized whenever possible. If not possible, the allowable limit of Table Xa and Table Xb
9 r! X0 ]2 n/ m5 O8 } p2 q6 fmust be reduced by 10°C.
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