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LEL??PPM??VOL??????????屨????

?????2013/12/7 11:13:23  ???????jnhadz  ????????
 

      PPM????????????????????????????????????ж????壬???????????????ж????屨?????????Я??ж????屨???????????????????????????????????????????????ppm???????????Parts per millionppm????????????????????????????????????1??????????1?????????,g/m3??mg/L?????????壺,????????????????????????????????

     ????涨????????????????????????????????????λ???磺mg/m3?????????????????淶????????????????λ???磺mg/m3???????ppm??mg/m3???????????mg/m3=M/22.4??ppm????273/??273+T??????P/101325?????У?M????????????T?????P??????

    VOL???????????????????????????,??????????????????????????????????????????????Щ????????屨????????????????????????????????????LEL????ж???????ppm???????????????????????VOL??????????????????????????????????????LEL??

    ??LEL?????????????????????????????????????????????????????????????????????????????????????"LEL"??????Lower Explosion Limited????????塢????????????????飩????????????飩??ú??????????????????????????????????????????,???й????????

     ?????п?????????????????????????????????????????????Σ?????????????100%LEL???????????庬???????????????????????????????????????????????Σ????10%LEL????????????п???????????????????????????Σ??????????????????е????????????????????????[%LEL]?????????????????????????????????????????????????????

   LEL???????????λ??????????????????????????????б????????????? LEL???????????????????????????????????????????в???????

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