GBT39841-2021 超(chao)聲(sheng)波燃(ran)氣(qi)表(biao) 測(ce)試灰(hui)塵

GBT39841-2021 超(chao)聲(sheng)波燃氣(qi)表(biao)Ultrasonic gas meters測(ce)試灰(hui)塵

又稱(cheng)GBT39841抗(kang)汙(wu)染物(wu)性能測(ce)試

EN14236汙(wu)染物(wu)

灰塵的規(gui)格

試(shi)驗采(cai)用(yong) 4 組不(bu)同(tong)尺(chi)寸的灰(hui)塵,每(mei)組中(zhong) 95%的灰(hui)塵顆粒大(da)小(xiao)在(zai)下(xia)列(lie)相應(ying)尺寸(cun)範(fan)圍(wei)內

a) 0um~100 um;平(ping)均大(da)小(xiao)( 50士(shi)10)um;

b) 100 um~200 um;平(ping)均大(da)小(xiao)(150 士(shi)10) um;

c)200 um~300um;平(ping)均大(da)小(xiao)(250士(shi)10)um;

d) 300pm~400um;平(ping)均大(da)小(xiao)(350士(shi)10)um。

上(shang)述每壹組灰(hui)塵的質(zhi)量成(cheng)分應(ying)是(shi):

四氧(yang)化三鐵(Fe304) 79%;

三氧(yang)化二(er)鐵(Fe203) 12%;

二氧(yang)化矽(Si0) 8%;

壹油(you)漆殘片 1%

GBT39841-2021 超聲波(bo)燃(ran)氣(qi)表(biao)Ultrasonic gas meters測(ce)試灰(hui)塵

EN14236汙(wu)染物(wu) 

EN 14236:2007(E)

Specification of contamination dust

Four separate batches of dust shall be used with 95 % of the particles in each batch in the appropriate size range given below:

a)0 um to 100 um Average size (50士(shi)10) um;

b) 100 um to 200 um Average size (150士(shi)10) um;

c) 200 um to 300 um Average size (250 士(shi)10) um;

d) 300 um to 400 um Average size (350士(shi) 10) um.

Each of the above batches shall have a composition by mass of:

Black iron oxide(Fe3O4) 79 %

Red iron oxide (Fe2O3) 12 %

Mineral silica flour (SiO) 8%

Paint residual flake 1%