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我想问:1、如果5s内不能点燃,你们怎么判定?
" d) f# t) g' Y/ B* g& U: [ 2、如果5s内点燃,燃烧3s后自熄,要不要计算燃烧速度,还是直接判为自熄,有何证据?2 B( W* `- Q+ P1 Z3 b8 M
3、如果3s内点燃,燃烧3s后自熄,要不要计算燃烧速度,还是直接判为自熄,有何证据?" @; l1 d6 l# Y8 i Y( ~* Y
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, s, y! |, Y3 r5 D7 U1、合格,不计算速度;, c" V: r* B* V) _. I5 w8 g
2、要计算燃烧速度,公式为:实际长度/(5S+3S),得到的值如大于0.1IN/S,则不合格4 P* H* G1 e- T8 }1 [, }
3、要计算燃烧速度,公式为:实际长度/(3S+3S),得到的值如大于0.1IN/S,则不合格/ t1 b0 T0 p1 q9 ?, e9 \: V7 Z
请注意F963-08版本的燃烧时间计划与之前不一样,是从点火开始计时,总时间为60S,即为5S+55S,移开火焰后再只燃烧55S(对于会续燃的样品),! Y+ ]# R/ J8 K! B9 B
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A4.5.5 Remove the candle and allow the sample to burn for5 ^6 |: z7 C5 t5 c
an additional 55 s (total burn time including ignition time is 60# B6 O0 n! J- B# L$ q) D
s) or until the flames reach the opposite end of the major axis./ I% c; Z: |' i% K! e
Determine the time of combustion by means of a stop watch.
: I8 o# T* O* }' JDo not allow the total test time to exceed 60 s with a5 H# i; i+ Y: b9 z4 }
self-sustaining flame.
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以个意见希望有用! |
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