自动化仪表
自動化儀錶
자동화의표
PROCESS AUTOMATION INSTRUMENTATION
2015年
4期
84-87,90
,共5页
王焕玲%黄富贵%熊焕祈%王府贵
王煥玲%黃富貴%熊煥祈%王府貴
왕환령%황부귀%웅환기%왕부귀
气体流量标定装置%水标法%pVTt法%钟罩法%音速喷嘴法%静态标定参数
氣體流量標定裝置%水標法%pVTt法%鐘罩法%音速噴嘴法%靜態標定參數
기체류량표정장치%수표법%pVTt법%종조법%음속분취법%정태표정삼수
The calibration device for gas flow%The calibration method with water%The pVTt method%The bell jar method%The sonic nozzle method%The static calibration parameters
罗茨霍尔气体流量计具有测量精度高、测量范围宽以及性能稳定可靠等优点。根据罗茨霍尔气体流量计特点及其静态参数标定要求，分析了水标法、pVTt法、钟罩法和音速喷嘴法四种气体流量计的标定方法，以及它们各自的工作原理、工作装置和优缺点，并指出音速喷嘴法在流量范围、准确度、适应性、耐用性、经济性与维护方面都具有明显的优越性。最后确定音速喷嘴法可作为该气体流量计静态参数标定的最佳选择。
囉茨霍爾氣體流量計具有測量精度高、測量範圍寬以及性能穩定可靠等優點。根據囉茨霍爾氣體流量計特點及其靜態參數標定要求，分析瞭水標法、pVTt法、鐘罩法和音速噴嘴法四種氣體流量計的標定方法，以及它們各自的工作原理、工作裝置和優缺點，併指齣音速噴嘴法在流量範圍、準確度、適應性、耐用性、經濟性與維護方麵都具有明顯的優越性。最後確定音速噴嘴法可作為該氣體流量計靜態參數標定的最佳選擇。
라자곽이기체류량계구유측량정도고、측량범위관이급성능은정가고등우점。근거라자곽이기체류량계특점급기정태삼수표정요구，분석료수표법、pVTt법、종조법화음속분취법사충기체류량계적표정방법，이급타문각자적공작원리、공작장치화우결점，병지출음속분취법재류량범위、준학도、괄응성、내용성、경제성여유호방면도구유명현적우월성。최후학정음속분취법가작위해기체류량계정태삼수표정적최가선택。
Roots-Hall gas flowmeter features advantages of high measurement accuracy, wide measurement range and stable performance, etc. In accordance with these features and calibration requirements of static parameters, four of existing calibration methods for gas flowmeter, i. e. , the calibration method using water, method, the bell jar method, and the sonic nozzle method, as well as their respective operational principle, working device, and advantages and disadvantages are analyzed. It is pointed out that sonic nozzle method features obvious superiority in flow range, accuracy, adaptability, durability, economy and maintenance. The conclusion is sonic nozzle method may be the best choice for static parameter calibration of the gas flowmeters.
