From September 18th to 20th, the 2018 National Academic Exchange Conference on Flow Measurement and the Annual Meeting of the Flow Measurement Professional Committee of the China Society of Metrology and Testing were held in Chongqing, Wudu. More than 350 representatives from domestic and foreign metrology technology institutions, universities, research institutes, flow meter production enterprises, and industry users attended this conference

The Beijing Analysis and Testing Academic Conference and Exhibition (BCEIA), hosted by the China Association for Analysis and Testing, adheres to the development momentum of "analytical science creates the future", combines national strategic needs with scientific exploration goals, and has successfully held 16 sessions after 30 years of cultivation and development.

The Sonimix 2016 fully automatic high-precision gas dilution and mixing device can dilute and mix high concentration gases in gas cylinders in large proportions. According to the gas equation, the instrument can automatically calculate the ratio concentration. Some models can be equipped with self calibration and self diagnosis functions.

PAS NO2 photoacoustic spectroscopy gas analyzer, used for direct analysis and detection of low concentration NO2 without considering conversion efficiency. Its large range, low detection limit, and small zero drift are achieved through special online resonance frequency tracking technology. Temperature calibration curve ensures accurate and reliable measurement results even when there are significant changes in temperature conditions