標(biāo)準(zhǔn)號(hào)：IEC 60068-3-11-2007
中文標(biāo)準(zhǔn)名稱(chēng)：環(huán)境測(cè)試.第3-11部分:支持文件和指南.氣候試驗(yàn)室內(nèi)條件不確定性的計(jì)算
英文標(biāo)準(zhǔn)名稱(chēng)：Environmental testing - Part 3-11: Supporting documentation and guidance - Calculation of uncertainty of conditions in climatic test chambers
標(biāo)準(zhǔn)類(lèi)型：A21
發(fā)布日期：1999/12/31 12:00:00
實(shí)施日期：1999/12/31 12:00:00
中國(guó)標(biāo)準(zhǔn)分類(lèi)號(hào)：A21
國(guó)際標(biāo)準(zhǔn)分類(lèi)號(hào)：19.040
適用范圍：This part of IEC 60068 demonstrates how to estimate the uncertainty of steady-statetemperature and humidity conditions in temperature and humidity chambers. Since this isinextricably linked to the methods of measurement, these are also described.This standard is equally applicable to all environmental enclosures, including rooms orlaboratories. The methods used apply both to temperature chambers and combinedtemperature and humidity chambers.This standard is meant to help everyone using climatic test chambers. Those already familiarwith uncertainty of measurement will find it useful for guidance on typical sources ofuncertainty and how they should be quantified and combined. It is also intended to assist thefirst-time or occasional user who has little or no knowledge of the subject.To discuss uncertainty, it is important first to understand what is being measured orcharacterized. The calibration or characterization of the performance of a chamber isconcerned with the humidity and temperature of the air in the chamber, as experienced by theitem under test, at a given set point. This should not be confused with characterizing orcalibrating the chamber sensor, which is a separate matter.