金沙澳门登陆网站(中国)有限公司

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?????2021/1/26 11:21:48  ???????????  ?????????
      ???屨???????????????????????????屨???????ж????屨?????????????豸????????????????????????????????л?????????????GB50493-2009?????????????????ж????????????淶?????  ??
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????????????????趨?С??????25%????????
????????????????趨?С??????50%????????
???磺??????????????飬?????????????5%VOL??????????????100???????0-100%LEL??????е???????????С?????????????<=25%LEL)??????е???????????С???????????????????????????????????<=50%LEL?????????????????????????豸????????????????????????????????????????????????????
1????????????????????????BW???????????????????BW???????????????屨??????????????????????ü???????????????????????10%LEL???????????20%VOL??
2???????????????5%VOL?????????????????3.3%VOL??????????10%?????????????????0.5%VOL???????????????10%??0.33%VOL???????ü?????????????????????????????????Ч????????????????????????????????6%??????????????????0.3%VOL??????????????10%????????
      ???????淶?й涨?????屨????????????????????????????????????????Χ???????????????????????????????????????????????????????????????????г????
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1???ж??????????趨???С??????100%??????????/???????????????

2??????????????????????????????趨??200%??????????/???????????????????

3???????м???????????Χ??????????????????ж???????????Χ???0-30%??????????

4???ж???????????Χ?趨????ó???10%????????????

     ???磺?????????????????????30mg/m3???????ppm??24.9ppm?????廻???????mg/m3=?????????/22.4*ppm??????30mg/m3=30*22.4/17ppm=39.5ppm??????????????????趨????????39.5ppm??????????0-100ppm????????????????????????????????8ppm??????????????????16ppm????????????1000ppm???????????????????趨?80ppm??????С??80ppm??????????趨???????200%???????????????39.5*2???????????80ppm??

     ??????????????屨???????????趨?淶?????????????????????????????????????屨?????????λ???????????????淶??????????????????????????????????????????????????????????????????????????????????±?????????????????????????????????????

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