Liquid Flow Meters and Switches

S ubstantial quantities of liquid or fluid such as natural gas, oil, water, and emissions are produced every day, all over the world. The quantification of the bulk fluid movement is referred to as the  measurement of liquid flow . A measurement is achieved at every juncture where a transaction occurs. In order to bill the quantity of liquid or gas transfer, a flow meter is regarded to be the most vital device. A brief history of liquid flow measurement The measurement of a fluid holds a huge significance in human civilization since ancient times. The history of the liquid stream measurement dates back to the period when the Egyptians used the current of the Nile as a flow-meter to predict if the harvest would be good or bad. The liquid streaming in the Roman drainage pipes was measured by the orifice plates. Much later in the 50s, owing to the economic production, the use of only orifice flow meter, rotameter, and the pilot tube was profound in the industries. The accu...

An instrument, which measures the volumetric flow rate of the fluid running through a closed conduit, is called a rotameter. The device consists of a float and a tube. Being a kind of a variable-area meter, it analyzes the flow rate by the upward and downward motion of the float in the tapered tube and the measurement provided by the flow meter is directly proportional to the area of flow and the flow rate. Principle Involved in the Operation of the Rotameter Now the question is how to read a rotameter?   Rotameter is the most accepted industrial flow meter, which works based on the  principle of gravity  and variable area. The flow rate increases and decreases the height of the float, which accordingly adjusts the passage of the fluid flow and consequently, the total area between the float and the wall of the tube. Equilibrium is reached when the upward force created by the flowing fluid balances the descending force exerted by the mass of the float, hence mainta...

The 8000XHT/XLT (eXtreme High Temperature/eXtreme Low Temperature) Flow Rate Measurement Instrument has been designed to work in harsh environments. It is capable of operating with fluid temperatures from   -80C   to   +200C   as well as in extremely high EMF (ElectroMagnetic Field) environments ( 10V/m, >189 GHz without 1/16” LED hole & Power Fields of 400A for 100–240VAC 50Hz/60Hz ) and   Mil-Std 810 Vibration & Shock   (20G). REAL WORLD APPLICATIONS Semiconductor processes have been changing. At the time of the 8000RFR product, Lam Research mentioned that one of their customers was cycling the fluid temperature by 40C during the Semiconductor Manufacturing Process. TESTING & TEST EQUIPMENT Proteus is also developing a -60C to +80C slow cycle life test stand per Lam Research requirements. A new chiller system is ordered Special valves & hoses for leak-free from -60C to +200C are ordered A Coriolis meter designed for cr...