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How to install the rotameter

by:Sincerity Group     2022-08-03
Abstract: The information on how to install the rotor flowmeter is provided by the excellent flowmeter and flowmeter manufacturers. Rotameter, also known as rotameter, is selected in industrial field applications. The main measurement object is single-phase liquid or gas, and the liquid containing particulate solids or the gas containing droplets is usually not applicable. Because the float attaches particles or particles in the liquid flow. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details on how to install the rotor flowmeter. Rotameter is also called rotameter. In industrial field applications, the main measurement object of rotameter is single-phase liquid or gas. It is usually not suitable for liquid containing particulate solids or gas containing droplets. Because the float adheres to particles or tiny air bubbles in the liquid flow, it will affect the measurement value. If it is necessary to transmit a signal far away for total accumulation or flow control, a metal tube rotameter (ie, a metal tube rotameter) with electrical signal output is generally used. If the ambient atmosphere has explosion-proof requirements and there is an air source for the control instrument on site, the remote metal rotameter is given priority. If the electric remote transmission instrument is selected, it must be an explosion-proof type. It is more common to choose metal tube rotameters when measuring opaque liquids. When measuring high-viscosity liquids with a temperature higher than the ambient temperature and liquids that are easy to crystallize or solidify when cooled, a metal tube rotor flowmeter with a jacket should be used. The technical staff of Xudong Instrument Factory, the manufacturer of metal rotameters, will introduce you the precautions for installation and use of rotameters: 1. Most of the rotameters in the installation direction of the instrument must be installed vertically on the pipeline without vibration, and there should be no obvious , the fluid flows through the meter from bottom to top. The angle between the center line of the rotor flowmeter and the vertical line is generally not more than 5 degrees, and the high-precision (above 1.5) instrumentθ≤20°. ifθ=12°An additional error of 1% will occur. The instrument does not have strict requirements on the length of the upstream straight pipe section, but there are also manufacturers that require (2-5)D length, which is actually not necessary. 2. For the installation of dirty fluid, a filter should be installed upstream of the instrument. When the metal tube rotameter with magnetic coupling is used for fluids that may contain magnetic impurities, a magnetic filter should be installed in front of the meter. To keep the float and conical tube clean, especially for small-diameter instruments, the cleanliness of the float obviously affects the measured value. 3. Installation of rotameter to expand the range. If the flow range required for measurement is wide, and the range exceeds 10, two floats of different shapes and weights can be placed in one meter. After reaching the top, take the heavy float reading, and the range can be expanded to 50-100. 4. The pulsation of the pulsating flow of the rotor flow meter is the pulsation of the flow itself, such as the reciprocating pump or regulating valve upstream of the intended instrument position, or the downstream There is a large load Changes, etc., the measurement position should be changed or the pipeline system should be remedied and improved, such as adding a buffer tank; if the instrument itself oscillates, such as when the gas pressure is too low during measurement, the upstream valve of the instrument is not fully opened, and the regulating valve is not installed downstream of the instrument, etc. The reason should be improved and overcome in a targeted manner, or an instrument with a damping device should be used instead. 5. The rotameter should exhaust the liquid. Use the angle metal rotameter whose gas inlet and outlet in the instrument are not in a straight line. When using it for liquid, pay attention to whether there is any residual air in the casing of the extension of the displacement of the external float. It must be exhausted; if the liquid contains tiny bubbles It is easy to accumulate in the casing when flowing, and it should be exhausted regularly. This is more important for small-diameter instruments, otherwise the flow indication will be affected significantly. 6. The flow value of the rotameter should be converted as necessary. If it is not an instrument specially ordered by the rotameter manufacturer according to the medium parameters such as density and viscosity, the flow rate of the liquid meter is usually calibrated with water, and the gas meter is calibrated with air. Engineering Standard Status. When the fluid density, gas pressure and temperature of the operating conditions are inconsistent with the calibration, necessary conversions must be made. Conversion formulas and methods are detailed in the manufacturer's instruction manual for the rotameter. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'How to install the rotor flow meter'
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