Liquid and gas optical flowmeter model development

The article presents the flow rate measuring method in accordance with the rectangular pipe transverse temperature gradient variation. The possibility of studying the heat exchange regularities under the natural convection is considered. Laser beam angular deviation dependence on the flow rate is investigated. The pipe temperature distribution is found to be inhomogeneous relative to the air flow velocity. The possibility of developing the laser flow meter for measuring the low gas consumption is demonstrated. The proposed method application limits are determined.