Taking into account the prevailing conditions in the country and the prevalence of coronary heart disease and inquiries from the competent centers of the Ministry of Health, the Executive Committee of the Conference on Fluid Flow Measurement has decided to hold the 5th National Conference and Exhibition of Fluid Flow Measurement on December 18 and 19 Iran University of Science and Technology to delay the improvement of the country and the coronary heart disease. We hope that with the improvement of the country’s conditions, the fifth national conference and exhibition of fluid flow measurement will be held as in previous years, with the maximum presence of experts in the field of fluid flow measurement.