3/19/2024 0 Comments Liquid chemical flow meterFaraday’s Law states that the voltage generated is proportional to the movement of the flowing liquid. When the fluid moves faster, more voltage is generated. Following Faraday’s Law, flow of a conductive liquid through the magnetic field will cause a voltage signal to be sensed by electrodes located on the flow tube walls. In a magnetic flowmeter, a magnetic field is generated and channeled into the liquid flowing through the pipe. Magnetic flowmeters use Faraday’s Law of Electromagnetic Induction to determine the flow of liquid in a pipe. They can handle light particulate, have a higher pressure drop, lower rangeability and are slightly less accurate. A less expensive alternative to Magnetic technology: CoolPoint vortex shedders. Manufacturers We offer over 23 different brands of flow meters and related products, here are some in detail. The rotors inherently provide better sealing because their gear design traps a pocket of fluid right at the capillary sealing point, thus preventing leakage around the measuring element. Another choice is the oval gear meter, a positive displacement device using dual oval shaped rotors. This allows a turbine meter to be used for low viscosity as well as non-lubricating fluids. The turbine rotor is suspended by a ball or sleeve bearing giving it almost no drag coefficient. The best approach for this type of fluid is to use a turbine flowmeter. This loading creates higher pressure drops and increases wear on the meter. This means that non-lubricating fluids allow these parts to drag on each other which increases frictional loading. In the nutating disc (wobble plate) the center ball rides in a shaped cup, in oscillating piston meters the center pin is in contact with the roller and the piston diaphragm rides on a hub. Positive displacement meters have surfaces in the measuring chamber which touch each other. This will manifest itself in leakage around the measuring element and generally make the meter read low. If you are dealing with a low viscosity fluid, i.e., alcohol, toluene, MEK, etc., you lack the viscosity to develop a good capillary seal. However, what makes it “positive” is a capillary seal between the measuring element and the side wall or the meshing components. A mechanical meter which has an oscillating piston, nutating disc (wobble plate) or similar measuring element is known as a positive displacement meter. Mechanical meters need to be applied with some concern given to the fluid characteristics. Viscosity considerations and the lack of capillary sealing They cannot handle low pH fluids and in some cases will be attacked by solvents. Plastic bodied meters designed for water service are made of polyacetals and polycarbonates, not PVC. PVC and CPVC can handle chemicals which will melt a plastic bodied meter in seconds. Never assume that a plastic bodied meter will work for you just because you are using PVC lines. If you get into a chemical compatibility problem, it will be in the working mechanism, not the body. Always review the list of materials in the specifications. The materials in the mechanism must be specified carefully. The body is only a pressure vessel which contains the working mechanism. Never just ask for a body material and expect the meter to work properly. The more information you can provide us, the better job we can do at selecting the right flow meter for your application. Of particular importance is the temperature and line pressure. We’ll need to know exactly what the fluid is and the operating conditions. Selecting a flowmeter for chemical service can be tricky. (Niagara® Meters) Print This Page Email This Pageįlowmeter Application for Measuring Acids, Alcohols & Solvents Red Seal (Actaris, Neptune) Seametrics Total Control Systems™ (TCS) Turbines, Inc.™ Tuthill, FILL-RITE®, SOTERA® Systems, FPP Venture Measurement (KEP) King Instrument Company Master Meter McCrometer Neptune Technology Group RCM Industries, Inc. (GPI®, Flomec®) GWF Meters Honeywell (Elster, AMCO) Kessler-Ellis Products Comate Controls Warehouse Meters Great Plains Industries Products Batch/Flow, Timer/Counter/Rate Force Meters Insertion Meters Magnetic Flowmeters Multi-Jet Flowmeters Positive Displacement Meters Turbine Meters Ultrasonic Flowmeters Variable Area Flowmeters Manufacturers ABB Aquametro Badger (Blancett®, Dynasonics®, E-Series®, Hedland®, ModMAG®, Recordall®, Turbo) Blue White Industries, Inc. Cold / Hot Water, Irrigation, Wastewater.Air, Steam, Compressed Gas, Natural Gas.Tuthill, FILL-RITE®, SOTERA® Systems, FPP.Badger (Blancett®, Dynasonics®, E-Series®, ModMAG®, Hedland®, Recordall®, Turbo).Acids, Alcohol, Solvents Flowmeter Applications- Ocala, FL Call Us Toll Free: (800)633-0319
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