ASTM D93 Txheej Txheem A thiab Txheej Txheem B yog ob txoj hauv kev sib txawv rau kev txiav txim siab lub teeb nyem siv Pensky-Martens kaw- khob tester. Lawv txawv feem ntau nyob rau hauv cov qauv siv, nplawm ceev, cua sov tus nqi, thiab ignition daim ntawv thov lub sij hawm.
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Yam khoom |
Txheej txheem A |
Txheej txheem B |
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Scope ntawm daim ntawv thov |
Muaj feem xyuam rau cov roj distillate (diesel, biodiesel blends, kerosene, roj cua sov, turbine fuels), tshiab thiab hauv -siv cov roj lubricating, thiab lwm yam roj av homogeneous kua uas tsis tau them los ntawm Txoj Cai B los yog C.Suitable rau qis-viscosity, homogeneous kua uas ua kom sov sib xws. |
Muaj feem xyuam rau cov roj uas seem, cutback residua, siv cov roj lubricating, kua roj av- cov khoom sib tov, cov kua uas tsim cov zaj duab xis saum npoo thaum kuaj, thiab siab - cov kua viscosity uas tsis tuaj yeem ua kom sov tsis sib xws raws li Txoj Cai A txoj kev nplawm.Designed rau tsis yog -homogeneous, -, viscosity siab cov qauv. |
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Stirring Speed (Manual Apparatus) |
90-120 rpm |
250 ± 10 rpm (ntau dua nplawm kom tsis tu ncua cua sov ntawm cov qauv viscous) |
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Heating Rate (Kev Taw Qhia Apparatus) |
5-6℃(9-11℃F) ib feeb (ceev cua sov rau qis-cov qauv viscosity) |
1–1.6℃(2–3℃F) ib feeb (slower cua sov rau siab-cov qauv viscosity kom tsis txhob muaj cua sov tsis sib xws) |
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Ignition Application Interval |
• Rau qhov xav tau flash point Tsawg dua lossis sib npaug li 110℃: Siv qhov hluav taws xob ntawm 1℃ib ntus thaum tus qauv ntsuas kub yog 23 ± 5℃qis dua qhov xav tau flash point.• Rau cov ntsiab lus siab dua: Feem ntau 2℃intervals. |
Siv qhov hluav taws kub ntawm 1℃ib ntus (ntau zaus xyuas vim cua sov qeeb thiab cov qauv tsis yooj yim). |