The uneven distribution of flow velocity and the existence of secondary flow in the pipe are important factors that affect the measurement accuracy of the turbine flowmeter. Therefore, the turbine flowmeter has certain requirements for the upstream and downstream straight pipe sections. For industrial measurement, generally 20D upstream and 5D downstream The length of the straight pipe. In order to eliminate the secondary flow, it is best to install a rectifier on the upstream end. If the upstream end can guarantee a straight pipe section of about 20D, and install a rectifier, the measurement accuracy of the flowmeter can reach the accuracy of the calibration timing Degree level. Turbine flowmeters have high requirements for the cleanliness of the fluid. A filter must be installed in front of the flowmeter to ensure the cleanliness of the fluid. The filter can be funnel-shaped, and its cleanliness can be obtained by measuring the differential pressure change at both ends. In order to ensure that the liquid passing through the flowmeter is single-phase, that is, no air or vapor can enter the flowmeter, a degasser should be installed upstream of the flowmeter if necessary. For liquids that are easily vaporized, a certain back pressure must be ensured downstream of the turbine flowmeter The size of the back pressure can be taken as twice the pressure drop of the flow sensor at the maximum flow plus 1.2 times the vapor pressure of the measured liquid at the highest temperature. Our Acrylic Award range includes Acrylic Block Awards and Other Acrylic Awards in a variety of colours and sizes. Our engraved acrylic awards are created with a high-quality laser engraving process. Customise your Acrylic Awards with personalised engraving logo and text, ideal for award ceremonies and competitions. In addition to our catalog of acrylic trophies, acrylic plaques and more, our custom acrylic awards can be made in any shape or size - if you can dream it, we can make it. Acrylic Awards Acrylic Awards ,Acrylic Plaques And Awards,Plexiglass Awards,Clear Acrylic Awards Shenzhen Apex Artcrafts Co,.LTD , https://www.apexdisplaycn.com
Knowledge and requirements for the installation and piping of turbine flowmeters of electronic measuring instruments