PR293 Series Nanovolt Microhm Thermometer

Mawonekedwe

Kuzindikira kwa muyeso wa 10nV / 10μΩ

Kapangidwe kabwino ka amplifier ya phokoso lotsika kwambiri komanso gawo lamagetsi lotsika kwambiri limachepetsa kwambiri phokoso lowerenga la kuzungulira kwa chizindikiro, motero kumawonjezera chidwi chowerenga kufika pa 10nV/10uΩ, ndikuwonjezera bwino manambala owonetsera bwino panthawi yoyezera kutentha.

Kukhazikika kwabwino kwambiri pachaka

Ma thermometer a PR291/PR293, omwe amagwiritsa ntchito mfundo yoyezera chiŵerengero komanso okhala ndi ma reference standard reference resolution resistor, ali ndi kutentha kochepa kwambiri komanso kukhazikika kwabwino pachaka. Popanda kugwiritsa ntchito ntchito yokhazikika yowunikira kutentha, kukhazikika kwa pachaka kwa mndandanda wonse kungakhalebe bwino kwambiri kuposa 7 1/2 digital multimeter yomwe imagwiritsidwa ntchito nthawi zambiri.

Chojambulira chotsika pang'ono cha njira zambiri chophatikizidwa

Kuwonjezera pa njira yakutsogolo, pali ma seti awiri kapena asanu odziyimira pawokha a malo oyesera omwe amagwira ntchito yonse omwe amaphatikizidwa kumbuyo kwa gululo malinga ndi mitundu yosiyanasiyana ya ma thermometers a PR291/PR293. Njira iliyonse imatha kukhazikitsa mtundu wa chizindikiro choyesera payokha, ndipo imakhala ndi kusinthasintha kwakukulu pakati pa njira, kotero kupeza deta ya njira zambiri kumatha kuchitika popanda kusintha kulikonse kwakunja. Kuphatikiza apo, kapangidwe ka phokoso lotsika kamatsimikizira kuti zizindikiro zolumikizidwa kudzera mu njira sizibweretsa phokoso lowonjezera lowerenga.

Malipiro a CJ olondola kwambiri

Kukhazikika ndi kulondola kwa kutentha kwa CJ kumachita gawo lofunika kwambiri pakuyeza ma thermocouple olondola kwambiri. Ma digito olondola kwambiri omwe amagwiritsidwa ntchito nthawi zambiri amafunika kuphatikizidwa ndi zida zapadera zolipirira CJ kuti muyesere ma thermocouple. Gawo lodzipereka la High-precision CJ compensation limaphatikizidwa mu ma thermometers a PR293 series, kotero cholakwika cha CJ cha njira yogwiritsidwa ntchito chomwe chili bwino kuposa 0.15℃ popanda zinthu zina zolumikizira chingathe kuchitika.

Ntchito zowerengera kutentha kwambiri

Ma thermometer a PR291/PR293 ndi chida chapadera choyesera chomwe chimapangidwira makampani owerengera kutentha. Pali njira zitatu zogwirira ntchito zopezera, kutsatira njira imodzi, ndi kuyeza kusiyana kwa kutentha, pakati pa njira zoyezera kusiyana kwa kutentha zimatha kusanthula kufanana kwa kutentha kwa mitundu yonse ya zida zotenthetsera nthawi zonse.

Poyerekeza ndi multimeter yachikhalidwe ya digito, pali mtundu wa 30mV womwe umayezera ma thermocouple a mtundu wa S ndi mtundu wa 400Ω wa muyeso wa PT100 platinum resistance. Ndipo ndi mapulogalamu osinthira omwe amamangidwa mkati mwa masensa osiyanasiyana a kutentha, masensa osiyanasiyana (monga ma thermocouple okhazikika, ma thermometers okhazikika a platinum resistance, ma thermometers okhazikika a platinum resistance ndi ma thermocouple ogwira ntchito) omwe angathandizidwe, ndipo deta ya satifiketi kapena deta yokonza ikhoza kutchulidwa kuti itsatire kutentha kwa zotsatira za mayeso.

Ntchito yosanthula deta

Kuwonjezera pa deta yoyesera yosiyanasiyana, ma curve ndi kusungira deta zitha kuwonetsedwa, deta yeniyeni yokwanira/yochepera/yapakati, deta yosiyanasiyana yokhazikika pa kutentha ikhoza kuwerengedwa, ndipo deta yayikulu komanso yocheperako ikhoza kulembedwa kuti ithandize kusanthula deta mwanzeru pamalo oyesera.

Kapangidwe konyamulika

Ma thermometer a digito olondola kwambiri omwe amagwiritsidwa ntchito kwambiri m'ma laboratories nthawi zambiri amakhala akuluakulu komanso osanyamulika. Mosiyana ndi zimenezi, ma thermometer a PR291/PR293 ndi ochepa komanso olemera, zomwe zimathandiza poyesa kutentha kwambiri m'malo osiyanasiyana pamalopo. Kuphatikiza apo, kapangidwe ka batire ya lithiamu yomangidwa mkati mwake kamapangitsanso kuti ntchito ikhale yosavuta.