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这个加热丝的材料没有改哦. Q8 W. L; B, Y6 D l( h$ e
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6.2 Ignition source6 j3 f( y2 }8 p6 n# W
NiCr (80/20) heater wire, having a normal composition of 80 % nickel and 20 %, S; ^: `& ~# n2 i5 ^$ M3 U
chromium, having a diameter of 0,5 mm+ 0,020mm and a minimum length of 250 mm.This heater wire is coiled around the centre portion of the test specimen by applying five turns.
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NOTE NiCr (80/20) heater wire has a nominal cold resistance of approximately 5,25 Ω/m. |
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