ʻElima mau ʻano maʻamau o nā mea ʻike wela

-Kaumaha

ʻO ka thermistor kahi mea ʻike wela nona ke kūpaʻa he hana o kona wela. ʻElua ʻano o ka thermistors: PTC (Positive Temperature Coefficient) a me NTC (Negative Temperature Coefficient). Hoʻonui ka pale ʻana o kahi thermistor PTC me ka mahana. ʻO ka ʻokoʻa, e emi ana ke kūʻē o nā thermistors NTC me ka piʻi ʻana o ka mahana, a ʻo kēia ʻano thermistor me he mea lā ʻo ia ka thermistor maʻamau.

-Thermocouple

Hoʻohana pinepine ʻia nā Thermocouple no ke ana ʻana i nā mahana kiʻekiʻe a me kahi pae wela nui aʻe. Hana nā Thermocouples i ka manaʻo o kēlā me kēia conductor i hoʻopaʻa ʻia i kahi gradient thermal e hana i kahi voli liʻiliʻi, kahi mea i kapa ʻia ʻo ka hopena Seebeck. ʻO ka nui o ka volta i hana ʻia ma muli o ke ʻano metala. Nui nā ʻano thermocouple ma muli o ka mea metala i hoʻohana ʻia. I waena o lākou, ua kaulana nā hui hui. Loaʻa nā ʻano hui like ʻole no nā noi like ʻole, a koho maʻamau nā mea hoʻohana iā lākou ma muli o ke ʻano wela a me ka naʻau.

-ʻIke wela kūʻē (RTD)

ʻO nā mea ʻike wela kūʻē, ʻike ʻia hoʻi ʻo nā thermometer pale. Ua like nā RTD me nā thermistors no ka hoʻololi ʻana o ko lākou kūpaʻa me ka mahana. Eia nō naʻe, ma kahi o ka hoʻohana ʻana i nā mea kūikawā e pili ana i nā loli wela e like me nā thermistors, hoʻohana nā RTD i nā coils i ʻeha a puni kahi uea kumu i hana ʻia me ke aniani a i ʻole ke aniani. ʻO ka uea RTD he mea maʻemaʻe, maʻamau ka platinum, nickel a i ʻole keleawe, a ʻo kēia mea he pilina kūʻē-mehana kūpono i hoʻohana ʻia no ka hoʻoholo ʻana i ke ana wela.　

-Analog thermometer IC

ʻO kahi koho ʻē aʻe i ka hoʻohana ʻana i nā thermistors a me nā mea pale waiwai paʻa i loko o kahi kaapuni hoʻokaʻawale uila ʻo ia ka hoʻohālikelike ʻana i kahi sensor wela haʻahaʻa haʻahaʻa. Ma ka hoʻohālikelike ʻana i nā thermistors, hāʻawi nā IC analog i kahi kokoke laina laina.

-IC ana wela kikohoʻe

ʻOi aku ka paʻakikī o nā mea wela kikohoʻe, akā hiki ke pololei loa. Eia kekahi, hiki iā lākou ke hoʻomaʻamaʻa i ka hoʻolālā holoʻokoʻa no ka mea e hana ana ka hoʻololi analog-to-digital i loko o ka thermometer IC ma mua o kahi mea ʻokoʻa e like me ka microcontroller. Eia kekahi, hiki ke hoʻonohonoho ʻia kekahi mau IC kikohoʻe e ʻohi i ka ikehu mai kā lākou laina ʻikepili, e ʻae ana i nā pilina me ka hoʻohana ʻana i ʻelua uea wale nō (ʻo ia ka ʻikepili/mana a me ka lepo).