Installation instructions for metal tube rotameter

Abstract: The installation instructions for metal tube rotameter meters are provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. Metal tube rotameter is suitable for small diameter and low flow rate medium flow measurement; reliable work, low maintenance and long life. The metal tube rotameter does not have high requirements for the straight pipe section; the wider flow ratio is 10:1; the two-line large liquid crystal display can be selected on-site instantaneous. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following is the article details of the installation instructions for metal tube float flowmeters. Metal tube rotameter is suitable for small diameter and low flow rate medium flow measurement; reliable work, low maintenance and long life. Metal tube rotameter does not have high requirements for straight pipe sections; the wider flow ratio is 10:1; two-line large liquid crystal display, optional on-site instantaneous/cumulative flow display, with backlight uniaxial sensitive indication; non-contact magnetic coupling transmission; Metal tube rotameter all-metal structure, suitable for high temperature, high pressure and strong corrosive media; can be used in flammable and explosive hazardous situations; optional two-wire, battery, AC power supply mode; multi-parameter calibration function; metal tube float flow rate The meter has the functions of data recovery, data backup and power failure protection. Installation instructions for metal tube rotameter: 1. Instrument installation direction There are two installation directions: horizontal installation and vertical installation. Horizontal installation is divided into left in and out, right in and out. Vertical installation is divided into top in and bottom out, bottom in and top out. 2. For the installation of dirty fluids, 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. The pulsation of the installation flow itself, if there is a reciprocating pump or regulating valve upstream of the position where the instrument is to be installed, or there is a large load change in the downstream, 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 the gas pressure is too low during measurement, the upstream valve of the instrument is not fully opened, the regulating valve is not installed downstream of the instrument, etc., it should be improved and overcome, or an instrument with a damping device should be used instead. 4. Installation to expand the range. If the flow range required for measurement is wide and the range exceeds 10, you can put two floats of different shapes and weights in one meter. When the flow is small, take the light float for reading, and after the float reaches the top Taking heavy float readings, the range can be extended to 50-100. 5. To drain 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 outer casing of the floating float displacement. It must be drained; if the liquid contains tiny bubbles, it is extremely It is easy to accumulate in the casing, and it should be exhausted regularly. This is more important for small-diameter instruments, otherwise the flow indication will be affected significantly. 6. Necessary conversion of flow value If the meter is not specially customized to the manufacturer according to the medium parameters such as density and viscosity, the flow rate of liquid meter is usually calibrated with water, and the gas meter is calibrated with air, and the fixed value is in the engineering standard state. When the fluid density, gas pressure and temperature of the operating conditions are inconsistent with the calibration, necessary conversions must be made. The conversion formulas and methods are detailed in each manufacturer's instruction manual. 7. Verification and calibration of rotameters The calibration and calibration of rotameters are commonly used in standard table method, volume method and weighing method for liquids; bell jar method is commonly used for gas, and soap film method is used for small flow. The bulk products of some foreign manufacturers have been calibrated by dry method, that is, by controlling the size of the tapered tube and the weight of the float, and indirectly determining the flow value to reduce the cost, and only the high-precision instrument is calibrated by the actual flow. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Installation Instructions for Metal Tube Float Flow Meter'

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