General Laboratory Instrument--Kev Ntsuas Method of Infrared Thermometer
1. Tsuas yog ntsuas qhov kub ntawm qhov chaw. Cov ntsuas kub infrared tsis tuaj yeem ntsuas qhov ntsuas kub sab hauv.
2. Tsis txhob ntsuas kub los ntawm iav. Cov iav tsis cuam tshuam thiab xa tawm txawv dua li lwm cov ntaub ntawv, yog li cuam tshuam rau qhov kev nyeem ntawv kub infrared.
3. Nws raug nquahu kom tsis txhob siv cov ntsuas kub infrared los ntsuas qhov ci lossis polished hlau (stainless steel, aluminium, thiab lwm yam).
4. Ua tib zoo saib xyuas cov xwm txheej ib puag ncig. Chav dej, plua plav, pa taws, thiab lwm yam. ua rau lub ntsej muag tsis pom kev thiab tiv thaiv kev ntsuas kom raug.
5. Ua tib zoo saib xyuas qhov kub thiab txias. Yog tias tus pas ntsuas kub tau ntsib qhov kub ib puag ncig qhov sib txawv ntawm ntau dua 10 degrees, cia lub ntsuas ntsuas hloov mus rau qhov ntsuas kub ntawm qhov ntsuas kub tsawg kawg 20 feeb.
6. Cov khoom sib txawv siv cov emissivity sib txawv.
