Kana tikaenzanisa mhando dzakasiyana dzemathermometer, semuenzaniso thermometer yemercury ne thermometer yealcohol, zviyero zvemathermometer ese ari maviri zvakafanana chete pa 0 o C (kana 32 o F) uye 100 o C (kana 212 o F). Kana tikashandisa mathermometer ese ari maviri kuyera tembiricha yemhepo, nhamba dzinoratidzwa ne thermometer yega yega hadzizove dzakafanana. Zvinogona kunge kuti thermometer yemercury inoratidza 48 o C, nepo thermometer yealcohol ichiratidza 46 o C. Izvi zvinodaro nekuti mwero wekuwedzera kwemercury nealcohol wakasiyana. Saizvozvowo kune mamwe marudzi emathermometer, akadai se bimetallic thermometers, nezvimwewo. Chiyero chetembiricha chinosarudzwa nenzira iyi chinoenderana zvikuru nehunhu hwezvinhu zvinoshandiswa.
Nekuti chiyero chekupisa chinoshandiswa uchishandisa thermometer yakajairika chine matambudziko acho, tinoda thermometer yakajairika. Chiyero chekupisa chakajairwa chinotibvumira kugadzira chiyero chekupisa chakanyatsojeka pasina kuvimba nehunhu hwechinhu.
Thermometer inenge yakakwana ithermometer yegesi isingachinji . Nheyo yekushanda kwethermometer yegesi isingachinji ndeiyi inotevera: Vhoriyamu yegesi inochengetwa yakafanana, kana kuti isina kuchinja. Sezvo tembiricha ichiwedzera, kumanikidzwa kwegesi kunowedzerawo.
Mukati memapombi 1 ne2 mune mercury. Huremu hwegasi hunochengetwa hwakafanana nekusimudza kana kudzikisa pombi 2 kuitira kuti huwandu hwemercury mupombi 1 hugare huri pachiratidzo chekutarisa. Kana tembiricha ikawedzera, kumanikidzwa kwegasi mupombi kunowedzerawo. Saka, pombi 2 inofanira kukwidziridzwa kumusoro kuitira kuti huwandu hwegasi hurambe hwakafanana. Kumanikidzwa kwegasi kunogona kuonekwa nekuverenga kukwirira kwekoramu yemercury (h) mupombi 2. Kana uchishandisa nzira yemaoko, ingoyeuka kuti koramu yemercury ye760 mm yakakwirira = 1 atm (1 atm) yekumanikidzwa. Muma thermometers egasi akasimba anoramba aripo, pane counter yekumanikidzwa. Mudziyo une gasi wakagadzirwawo kuitira kuti gasi rigare riine huwandu hwakaenzana. Saka chinoyerwa chete kuchinja kwekumanikidzwa.
Kuti tigadzirise thermometer yegesi isingachinji, tinogona kuyera kumanikidzwa kwegesi patembiricha mbiri. Semuenzaniso, ngatishandisei tembiricha yechando ne vapor point. Ma thermometer egesi asingachinji anogadziriswa pa pressure ye 1 atm. Matanho ekugadzirisa thermometer ndeaya anotevera.
Kutanga, sirinda yegesi inoiswa mumudziyo une chando nemvura. Huwandu hwegesi hunochengetwa hwakafanana, saka pombi 2 inofanira kudzikiswa kuitira kuti huwandu hwemercury mupombi 1 hurambe huripo panzvimbo yekunongedzera. Kana huwandu hwegesi husina kuchinja, nyora kukwirira kwekoramu yemercury (h) mupombi 2. Shandisa h kuverenga kumanikidzwa. Kana uchishandisa thermometer yegesi inochinjika, sirinda ine gasi inonyudzwa zvakananga mumudziyo une chando nemvura. Pane chiyero chekumanikidza chatovepo. Nyora kumanikidzwa kwegasi (ngatitii uku kumanikidzwa 1 kana P 1 )
Chepiri, Silinda yegesi inoiswa mumudziyo une mvura iri kudziiswa. Kuti huwandu hwegesi hurambe hwakafanana, pombi 2 inosimudzwa kuitira kuti huwandu hwemercury mupombi 1 hurambe huripo. Kana huwandu hwegesi hukaramba hwakachinja, nyora kukwirira kwekoramu yemvura. 
mercury (h) mupaipi 2. Shandisa h kuverenga kumanikidzwa kwegasi (ngatiti iyi idzvinyiriro 2 kana P2)
Chechitatu , gadzira girafu inoratidza hukama huripo pakati pekumanikidzwa nekupisa. Ona muenzaniso uri pazasi.
P 1 isimba remhepo rinokwira patembiricha yechando (0 o C) uye P 2 isimba remhepo rinokwira patembiricha yemhepo inokwira (100 o C). Dhirowa mutsetse unobatanidza nzvimbo yekusangana kweP 1 ne 0 o C nenzvimbo yekusangana kweP 2 ne 100 o C. Nekutarisa girafu, kunyangwe tichingoziva simba remhepo chete, tembiricha inogonawo kuzivikanwa zviri nyore uye kufanotaurwa.
Kelvin scale
Kana mutsetse wakamanikana uri pagirafu iri pamusoro wakadhirowa kuti uparadzane neTo C axis, saka kana kumanikidzwa kwegasi = 0, tembiricha yegasi = -273,15 o C. Pamwe tinofunga kuti tembiricha yegasi pa0 pressure inosiyana, zvichienderana nerudzi rwegasi riri muchubhu yegesi inodziya thermometer. Zvichibva pakuyedza, kunyangwe rudzi rwegasi rwakasiyana, kana kumanikidzwa kwegasi kwava zero, tembiricha inogara iri -273,15 o C. Saka, tinogona kushandisa tembiricha iyi sechiyero chetembiricha chakajairwa (chinozivikanwawo sekupisa kwe zero zvachose). Tembiricha iyi ye zero chaiyo inozivikanwa sezita remadunhurirwa re absolute scale kana Kelvin scale. Kelvin izita raIshe Kelvin (1824-1907), aimbova nyanzvi yefizikisi yeBritain.
Pachikero ichi, tembiricha inoonekwa muKelvin (K), kwete madhigirii eKelvin (oK). Nguva iri pakati pemadhigiri yakafanana neiri pachikero cheCelsius, asi kukosha kwezero kunochinjirwa ku0 K. Saka 0 K = -273,15 oC uye 273,15 K = 0 oC. Tembiricha muchikamu cheCelsius inogona kushandurwa kuita Kelvin scale nekuwedzera 273,15. Saizvozvowo, tembiricha muchikamu cheKelvin inogona kushandurwa kuita Celsius scale nekubvisa 273,15.
T (K) = T (oC) + 273,15
T (oC) = T (K) – 273,15
Muenzaniso wemubvunzo 1.40 oC = …. K
T(K) = T(C) + 273
T = 20 + 273
T = 293 K
Muenzaniso wemubvunzo 2. 80 o F = …. K
