I.Inkcazo

I-Standard Platinum Resistance Thermometer isetyenziselwa ukuhlawula kubushushu obuqhelekileyo obuyi-13.8033k—961.8°C, kwaye isetyenziswa njengomgangatho xa kuvavanywa ii-thermometers ezahlukeneyo ezisemgangathweni kunye nee-thermometers ezichanekileyo. Ngaphakathi kwendawo yobushushu engentla, ikwasetyenziswa ngokuthe ngqo ekulinganiseni ubushushu obuchanekileyo obuphezulu.

I-Standard Platinum Resistance Thermometer ilinganisa ubushushu ngokwendlela etshintshatshintsha ngayo ubushushu bokumelana kweplatinum.

Ngokuhambelana nemigaqo ye-ITS90, i-T₉₀Ichazwa yi-thermometer yeplatinum xa i-triple point (13.8033K) yebhalansi ye-nitrogen ifikelela kuluhlu lobushushu lwe-silver freezing point. Ichazwa ngokusebenzisa iqela le-defined counterfeition point kunye nomsebenzi wereferensi kunye nomsebenzi wokuphambuka kwe-interpolation yobushushu.

Ukwahlulahlula ubushushu okungentla kwahlulwe kaliqela kwaye kugqitywe ekubeni kusebenze ngokuqhelekileyo ngaphakathi kommandla wobushushu obuphantsi ngeendlela ezahlukeneyo zesakhiwo see-thermometers.

Jonga ii-thermometers ezineenkcukacha kwitheyibhile engezantsi:

Qaphela: I-Rtp yee-thermometers ezingasentla yi-25±1.0Ω. Ububanzi bangaphandle beetyhubhu ze-quartz yi-φ7±0.6mm. Umzi-mveliso wethu ukwavelisa i-thermometer yeplatinum enommandla wobushushu we-83.8058K~660.323℃ njengesixhobo esiqhelekileyo esisebenzayo.

II.Sebenzisa Ulwazi

1. Ngaphambi kokuba usebenzise, ​​okokuqala, jonga inombolo yethemometha ukuze ihambelane nesatifikethi sovavanyo.

2. Xa usebenzisa, ngokwelogo yelug yesiphelo sentambo yethermometer, qhagamshela intambo ngokuchanekileyo. Ilug① yentambo ebomvu iqhagamshelwe kwisiphelo sendlela yangoku; ilug③yentambo emthubi, kwisiphelo sendlela yangoku; kunye nelug②yentambo emnyama, kwisiphelo sendlela yangoku; ilug④yentambo eluhlaza, kwisiphelo sendlela yangoku.

Nantsi indlela echazwe ngayo i-thermometer:

3. Umbane kufuneka ube yi-1MA ngokwendlela yokulinganisa ubushushu be-thermometer.

4. Ukuze kulinganiswe isixhobo sokulinganisa umbane se-thermometer sokulinganisa ubushushu, kufuneka kusetyenziswe i-potentiometer yokumelana okuphantsi kwebanga loku-1 kunye nokumelana okuqhelekileyo kwe-coil kwebanga elingu-0.1 okanye ibhuloho yokulinganisa ubushushu echanekileyo kunye nezixhobo. Iseti epheleleyo yesixhobo sokulinganisa umbane kufuneka iqinisekiswe ukuba inobukrelekrele bokwahlula utshintsho lwe-1000 Ohm.

5. Ngexesha lokusetyenziswa, ukugcinwa kunye nokuthuthwa, zama ukuphepha ukungcangcazela okukhulu komatshini we-thermometer.

6. Xa usebenzisa iThermometer yeStandard Platinum Resistance yodidi lokuqala ukuvavanya ubushushu beThermometer yeStandard Platinum Resistance yodidi lwesibini, kufuneka ulandele iinkqubo zokuqinisekisa ezivunyiweyo yiNational Measurement Bureau.

7. Uvavanyo oluqhelekileyo lwe-thermometer kufuneka lwenziwe ngokungqongqo ngokweenkqubo nemigaqo yokuqinisekisa efanelekileyo.