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 ka manawa mai kahi mea hoʻonui hoʻokō kiʻekiʻe impedance i kahi hōʻailona uila, Ma hope o ka hoʻonui ʻia ʻana o ka hōʻailona hoʻomalu ʻia e ka papahana, ka ʻike ʻana a me ka kānana ʻana, loaʻa ka hōʻailona kūpono e hōʻike ana 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.
ʻO ke ana o ka conductivity pono e wehewehe i ʻelua ʻaoʻao. ʻO kekahi ka conductivity o ka hāʻina, a ʻo kekahi ka pilina geometric o 1/A i loko o ka hopena. 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 papa huinaha me kahi ʻāpana o 1cm2 e 1cm e hana i ka electrode, ʻo ka mea 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 ʻike. 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 ʻo stray field, 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 ʻino 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 hāʻina e like me ka mana wela, nā fertilizers kemika, metallurgy, mālama kaiapuni, pharmaceuticals, biochemicals, meaʻai a me ka wai paila.
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 hopena 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 o nā laʻana me ka conductivity kiʻekiʻe e pono ai nā cell cell kiʻekiʻe. Pono e ʻike ka mea ana 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 mea e hoʻopaʻa ʻia i ʻelua ʻāpana platinum ma luna o nā ʻāpana aniani ʻelua a i ʻole ka paia o loko o kahi pahu aniani poepoe e hoʻoponopono ai i ka platinum sheet Area a me ka mamao hiki ke hana i 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 koʻikoʻi ke kumu o ka mīkini conductivity. Ke koho ʻana i kahi huahana, pono ʻoe e koho i kahi mea hana maikaʻi.
Ka manawa hoʻouna: Dec-15-2021