He aha ka ʻike kumu pono e hoʻopaʻa ʻia i ka wā e hoʻohana ai i ka mita conductivity?ʻO ka mea mua, i mea e pale aku ai i ka polarization electrode, hana ka mika i kahi hōʻailona hawewe sine paʻa a hoʻopili iā ia i ka electrode.ʻO ke au e kahe ana ma ka electrode e like me ka conductivity o ka hopena i ana ʻia.Ma hope o ka hoʻololi ʻana o ka mika i kēia manawa mai kahi mea hoʻokiʻekiʻe hana impedance kiʻekiʻe i kahi hōʻailona voltage, Ma hope o ka hoʻonui ʻia ʻana o ka hōʻailona hoʻomalu i ka papahana, ka ʻike ʻana a me ka kānana ʻana, loaʻa ka hōʻailona hiki ke hōʻike i ka conductivity;hoʻololi ka microprocessor i ke kuapo e hoʻāʻo i ka hōʻailona wela a me ka hōʻailona conductivity.Ma hope o ka helu ʻana a me ka uku wela, loaʻa ka hopena i ana ʻia ma 25 ° C.ʻO ka waiwai conductivity i ka manawa a me ka waiwai wela i kēlā manawa.
ʻO ke kahua uila e hoʻoneʻe ai i nā ion i loko o ka hopena i ana ʻia e nā electrodes ʻelua e pili pono ana me ka hopena.Pono e hana ʻia nā lua o nā electrodes me nā mea kūʻē kemika.I ka hoʻomaʻamaʻa, hoʻohana pinepine ʻia nā mea e like me ka titanium.ʻO ke ana electrode i haku ʻia i ʻelua electrodes i kapa ʻia ʻo Kohlrausch electrode.
Pono ke ana o ka conductivity e wehewehe i na mea elua.ʻO kekahi ka conductivity o ka hoʻonā, a ʻo kekahi ʻo ka pilina geometric o 1/A i ka hoʻonā.Hiki ke loaʻa ka conductivity ma ke ana ʻana i kēia manawa a me ka volta.Hoʻohana ʻia kēia loina ana i nā mea ana hōʻike pololei o kēia lā.
A me K=L/A
A——Ka pā pono o ka electrode ana
L——Ka mamao mawaena o na papa elua
Kapa ʻia ka waiwai o kēia ʻo ka cell constant.Ma ke alo o kahi kahua uila like ʻole ma waena o nā electrodes, hiki ke helu ʻia ka electrode mau e nā ana geometric.Ke hoʻokaʻawale ʻia ʻelua mau pā huinaha me kahi ʻāpana o 1cm2 e 1cm e hana i electrode, ʻo ka mau o kēia electrode ʻo K=1cm-1.Inā ana ka waiwai conductivity G=1000μS me kēia mau electrodes, a laila ka conductivity o ka ho'āʻo hoʻonā K=1000μS/cm.
Ma lalo o nā kūlana maʻamau, hoʻokumu pinepine ka electrode i kahi kahua uila ʻole like ʻole.I kēia manawa, pono e hoʻoholo ʻia ka paʻa o ke kelepona me kahi hopena maʻamau.Hoʻohana maʻamau nā haʻina maʻamau i ka hoʻonā KCl.ʻO kēia no ka mea paʻa loa ka conductivity o KCl a pololei ma lalo o nā mahana like ʻole a me nā manaʻo.ʻO ka conductivity o 0.1mol/l KCl solution ma 25°C he 12.88mS/CM.
ʻO ka mea i kapa ʻia ʻo ke kahua uila non-uniform (i kapa ʻia hoʻi ke kahua hele, leakage field) ʻaʻohe mau, akā pili i ke ʻano a me ka ʻike o nā ion.No laila, ʻo ka electrode maʻemaʻe hele hewa ka electrode maikaʻi loa, a ʻaʻole hiki ke hoʻokō i nā pono o kahi ākea ākea ma o ka calibration hoʻokahi.
2. He aha ke kahua noi o ka mita conductivity?
Nā kahua kūpono: Hiki ke hoʻohana nui ʻia i ka nānā mau ʻana i nā waiwai conductivity i nā haʻina e like me ka mana wela, nā mea hoʻomomona kemika, metallurgy, mālama kaiapuni, lāʻau lapaʻau, biochemical, meaʻai a me ka wai paipu.
3.He aha ke kelepona mau o ka mita conductivity?
"E like me ke ʻano K = S / G, hiki ke loaʻa ke kelepona mau K ma ke ana ʻana i ka conductance G o ka electrode conductivity i kekahi ʻano o ka hopena KCL.I kēia manawa, ʻike ʻia ka conductivity S o ka hoʻonā KCL.
Hōʻike pololei ka electrode mau o ka conductivity sensor i nā waiwai geometric o nā electrodes ʻelua o ka sensor.ʻO ia ka lakio o ka lōʻihi o ka hāpana ma kahi koʻikoʻi ma waena o nā electrodes 2.Hoʻopili pololei ia i ka naʻau a me ka pololei o ke ana.ʻO ke ana o nā laʻana me ka haʻahaʻa conductivity pono haʻahaʻa cell mau.ʻO ke ana ʻana o nā laʻana me ka conductivity kiʻekiʻe e pono ai nā cell cell kiʻekiʻe.Pono ka mea ana e ʻike i ke kelepona mau o ka sensor conductivity pili a hoʻoponopono i nā kikoʻī heluhelu e like me ia.
4. He aha nā cell mau o ka conductivity mika?
ʻO ka lua-electrode conductivity electrode i kēia manawa ka mea i hoʻohana nui ʻia o ka electrode conductivity i Kina.ʻO ke ʻano o ka hoʻokolohua ʻelua-electrode conductivity electrode e hoʻopaʻa ʻia i ʻelua platinum sheets ma luna o ʻelua mau ʻāpana aniani like ʻole a i ʻole ka paia o loko o kahi pahu aniani poepoe e hoʻoponopono i ka platinum sheet Area a hiki ke hana ʻia i loko o nā electrodes conductivity me nā waiwai mau.ʻO ka maʻamau he K=1, K=5, K=10 a me nā ʻano ʻē aʻe.
He mea nui ka loina o ka mita conductivity.Ke koho ʻana i kahi huahana, pono ʻoe e koho i kahi mea hana maikaʻi.
Ka manawa hoʻouna: Dec-15-2021