分流法湿度发生器PLC控制系统的研制
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摘要
采用可编程逻辑控制器(PLC)研制分流法湿度发生器的控制系统,提高了分流法湿度发生器在低湿度范围发生湿气的准确度。利用精密露点仪获得准确的露点值,并反馈控制分流法湿度发生器的各项控制参数,通过二次调节,湿度发生器可以输出湿度值更加准确的气体,发生湿气的露点最大允许误差为±0.5℃,重复性为0.15%(n=6),露点输出范围为–70~–10℃。该控制系统拓宽了分流法湿度发生器的应用范围,提高了湿度计量的工作效率。
Programmable Logic Controller(PLC) was adopted to develop the control system of humidity generator, which provided different humidity of gas automatically, and improved the accuracy in low frost point region. Precision dew-point hygrometers fed back precise dew-point value to control the parameters of humidity generator control system, humidity generator output more accurately. The maximum allowable misalignment was ±0.5 ℃, and the repeatability was 0.15%(n=6). The output range was from –70 ℃ to 10 ℃. This system widen the application range, and improve the measurement efficiency.
Programmable Logic Controller(PLC) was adopted to develop the control system of humidity generator, which provided different humidity of gas automatically, and improved the accuracy in low frost point region. Precision dew-point hygrometers fed back precise dew-point value to control the parameters of humidity generator control system, humidity generator output more accurately. The maximum allowable misalignment was ±0.5 ℃, and the repeatability was 0.15%(n=6). The output range was from –70 ℃ to 10 ℃. This system widen the application range, and improve the measurement efficiency.
引文
[1]李英干,范金鹏.湿度测量[M].北京:气象出版社,1990.
[2]国防科工委科技与质量司.化学计量[M].北京:原子能出版社,2002.
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[6]姜波,周庆福,陈祥光,等,分流式标准湿度发生器的研制[J].北京理工大学学报,2003,23(5):662–664.
[7]张德民,刘洪锦,于航.高温高湿试验箱加湿器PLC控制系统设计[J].天津理工大学学报,2012,28(3):41–45.
[8]崔剑,张学范,辛宗伟,等.一种多路外渗式湿度发生器的研制[J].计测技术,2006,26(增刊):77–80.
[9]张学范,栾贻国,崔剑,等.分流式湿度发生器温度控制系统的设计[J].化学分析计量,2002,11(6):42–43.
[10]Mamontov G.Mendeleyev institue for metrology(VNIIM).extension of the frost-point temperature range of the standard humidity generator down to–120℃[C]//Proceedings of 4th ISHM2002,Taipei:ITRI,2002:17–24.
[11]巩娟,何萌,吕国义.Swsy-F分流法湿度发生器的研制[J].计测技术,2010,30(增刊):47–49.
[12]李占元,易洪,任长青.分流式湿度发生器的设计原理[J].现代计量测试,2001(5):27–29.
[13]曹永锋.分流法湿度发生器在使用时的注意事项[J].计量与测试技术,2011,38(4):18–21.
[14]张学范,崔剑,辛宗伟,等.一体化湿度校准装置的研制[J].化学分析计量,2016,25(1):95–98.
[15]JJF(军工)42–2013分流式湿度发生器校准规范[S].
[16]JJG 499–2004精密露点仪检定规程[S].
[2]国防科工委科技与质量司.化学计量[M].北京:原子能出版社,2002.
[3]沙奕卓,付锡桂,赵旭,等.双压法湿度发生器与分流法湿度发生器的差异分析[J].气象水文海洋仪器,2009(1):48–51.
[4]王劲松.高精度便携式湿度发生器的研制[J].仪表技术与传感器,1995(5):25–26.
[5]张文东.湿度计量技术的发展[J].上海计量测试,2011(1):2–6.
[6]姜波,周庆福,陈祥光,等,分流式标准湿度发生器的研制[J].北京理工大学学报,2003,23(5):662–664.
[7]张德民,刘洪锦,于航.高温高湿试验箱加湿器PLC控制系统设计[J].天津理工大学学报,2012,28(3):41–45.
[8]崔剑,张学范,辛宗伟,等.一种多路外渗式湿度发生器的研制[J].计测技术,2006,26(增刊):77–80.
[9]张学范,栾贻国,崔剑,等.分流式湿度发生器温度控制系统的设计[J].化学分析计量,2002,11(6):42–43.
[10]Mamontov G.Mendeleyev institue for metrology(VNIIM).extension of the frost-point temperature range of the standard humidity generator down to–120℃[C]//Proceedings of 4th ISHM2002,Taipei:ITRI,2002:17–24.
[11]巩娟,何萌,吕国义.Swsy-F分流法湿度发生器的研制[J].计测技术,2010,30(增刊):47–49.
[12]李占元,易洪,任长青.分流式湿度发生器的设计原理[J].现代计量测试,2001(5):27–29.
[13]曹永锋.分流法湿度发生器在使用时的注意事项[J].计量与测试技术,2011,38(4):18–21.
[14]张学范,崔剑,辛宗伟,等.一体化湿度校准装置的研制[J].化学分析计量,2016,25(1):95–98.
[15]JJF(军工)42–2013分流式湿度发生器校准规范[S].
[16]JJG 499–2004精密露点仪检定规程[S].