JJF1050-1996-工作用热传导真空计校准.pdf

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1、中华人民共和国国家计量技术规范JJF1050-1996工作用热传导真空计校准规范CalibrationSpecificationofWorkingThermalConductivityVacuumGauge1996一01一11发布1996一10一01实施国家技术监督局发布JJF1050-1996工作用热传导真空计产。.。一。.口.‘卜.O.O.0.‘，.。‘口.口.口.户‘JJF1050-1996校准规范代替587-1989‘737-1991CalibrationSpecificationofWorking.‘，.‘，.‘，.‘〕.‘，

2、.‘，.‘，.‘，.、，.‘，.、，.‘，.‘.‘、ThermalConductivityVacuumGauge本技术规范经国家技术监督局于19%年01月11日批准，并自1996年10月01日起施行。归口单位:吉林省技术监督局起草单位:国营南京电子管厂吉林省计量测试技术研究所本规范技术条文由起草单位负责解释BF1050-1996本规范主要起草人:林国平(国营南京电子管厂)周淑荣(吉林省计量测试技术研究所)参加起草人:牟娟(大连市计量所)吴跃(安徽省真空计量站)JJF1050-1996目录一概述······················

3、·············。······································，············⋯⋯(1)二技术要求·......................................................................................(1)三校准条件·................................................................................·一(1)(一)校准用设备·······

4、···················‘·································，·，···········⋯⋯(1)(二)校准用标准装置····································································⋯⋯(2)(三)环境条件·············································，································⋯⋯(3)(四)校准气体··，，···············

5、····，，·-···············，········。·······················一(3)四校准项目和校准程序·.......................................................................(3)五校准结果处理和校准时间间隔............................................................(3)附录校准证书背面格式·......................................

6、.................................(5)JJF1050-1996工作用热传导真空计校准规范本校准规范适用于工作用热传导真空计(以下简称被校真空计)的校准。考虑到实际作用，施行本规范时，同时废止JJG587-1989和JJG737-1991两检定规程。一概述被校真空计是根据气体分子热传导性能与压力有关的原理制成的真空测量仪器，常用的种类有电阻真空计和热偶真空计，均由规管和电路组成。(见图1)A}I}BpV}`/GRIC、--JD一一}mJK/一一一IIFER,NIWR,佃)热偶真空计工作原理图(b)电阻真空

7、计工作原理图图1被校真空计工作原理图-A-毫安表;mV-毫伏表;G-被校计规管;R=Rz,凡一电阻;E一直流电源;G一规管;RS一电位器;A一电流表;R一可变电阻;K一开关;E一直流电源;K一开关;AOB一加热丝;COI〕一热偶丝;D一被测压力0一被测压力二技术要求压力示值相对误差:8不超过士50%.三校准条件(一)校准用设备2数字电压表或电位差计(0--20mV,0.1%)1台。3直流电流表(0-75一150mA,0.5级)1只。4交流电压表(0--250V,1.0级)1只。5交流稳压电源(1kVA稳定度士1%)1台。6计时器(最小分

8、度1s)1只。J,IF1050-19967温度计(0一+50℃、分度值0.5℃)1只。8湿度计(侧童滩确度士10%)1只。(二)校准用标准装置9真空标准装置(总不确定度不大于15%)1套。9.1采用静态膨胀