The Research Of Mobile Gas Flow Standard Equipment

Flow standard device that is used to reproduce value of flow, ultimately traceable to the country's basic value of the base of the experimental device.Its main role is to carry out verification and calibration of the meter to ensure the flow unity and accurate and reliable.Due to the limitations of laboratory,this paper designed a mobile gas flow standard device,as a laboratory standard equipment complement, achieve the purpose of that the gas meter's on-site verification.The entire device a high degree of automation, data show that real-time, detection means intelligent;for the feature of on-site verification, the device installed on-site environmental monitoring system for the detection of on-site ambient temperature, atmospheric pressure data in real-time collection, and the final data processing involved in the calculation of compensation, so that the entire device in the whole process of measuring,the accuracy, rapidity, reliability and so on to be a very good guarantee.In this paper, market research into the issues raised, design ideas and basic working principle of the establishment to the hardware design, software design, have carried out a detailed elaboration. After nearly a year of effort, a successful prototype trial. This device run-time performance is stable, easy to operate, cost-effective measurement accuracy and measurement repeatability are up to the design requirements; software interface intuitive, human-computer interaction is good. After three months of the experimental commissioning, the technical indicators are able to meet the design requirements to meet the needs of metrology, calibration and calibration.