Summary: When we need to undertake quantifying to infra-red radiant effect, we measure infra-red radiant temperature with respect to need, be about to be used right now infra-red measure Wen Yi. Material is different, behaves infra-red radiate character is different also. Using infra-red measure Wen Yi to read before taking temperature, the fundamental that we want to understand infra-red radiate to measure above all and specific the infra-red radiate of the material that be measured is characteristic. Nowhere is not in infrared radiate and always unending, the difference in temperature between the object is bigger, radiation phenomenon is more apparent. What the infrared radiate energy that vacuum can give out the sun passes 93 million miles is spatio-temporal and deferent to the earth, be absorbed by us, bring warmth for us. Before the food that stands in bazaar when us refrigerates ark when, the infra-red radiate quantity of heat that our body gives out is absorbed by cold storage food, make us feel very cool. Effect of the radiate in these two example is exceedingly apparent, we can find among them change apparently and feel its presence. When we need to undertake quantifying to infra-red radiant effect, we measure infra-red radiant temperature with respect to need, be about to be used right now infra-red measure Wen Yi. Material is different, behaves infra-red radiate character is different also. Using infra-red measure Wen Yi to read before taking temperature, the fundamental that we want to understand infra-red radiate to measure above all and specific the infra-red radiate of the material that be measured is characteristic. Infra-red radiate leads = absorptivity + reflectivity + transmissivity no matter the radiate outside He Chonggong, once give out,will be absorbed, , because this absorptivity = blasts off,lead. Infra-red measure lukewarm appearance place to read those who take is the infra-red radiate energy that object surface gives out, infra-red actinograph cannot read the infra-red radiate energy of the be lost in taking air, we are negligible in measuring the job actually accordingly transmissivity not plan, such we have to measure formula to a basic infra-red radiate: Emissive rate of = of infra-red radiate rate - reflectivity reflectivity becomes inverse ratio with emissive rate, the object reflexes infra-red radiant ability stronger, infra-red radiant ability jumps over its itself weak. The method that uses range estimation normally can judge the reflectivity size of the object roughly, the reflectivity of new copper is taller and emissive rate is inferior (0. 07-0.
2) , the reflectivity of the copper that is oxidized is inferior and emissive rate is higher (0.
6-0.
7) , the reflectivity of the copper that because weigh,blackens is lower even, and emissive rate is met accordingly taller (0.
88) . The face that great majority besmear has painting blasts off rate is very high (0.
9-0.
95) , and reflectivity is negligible not plan. Infra-red to great majority measure Wen Yi for, what need a setting exclusively is the material that be measured is rated emissive rate, this value is set beforehand normally for 0.
95, the face that this organic to measuring material or besmear have painting is enough. Measure Wen Yi emissive rate through adjusting, the radiant energy outside can compensating partial data to express flame measures insufficient issue, especially metallic stuff. Exist near the surface and only the object that be measured reflexes high temperature the ability when infra-red radiate source needs to consider reflectivity to be affected to what measure. CNC Milling
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