Precautions for installing vortex flowmeter

Abstract: The information on the precautions for installing vortex flowmeter meters is provided by the excellent flowmeter and flowmeter manufacturers and quotation manufacturers. Environmental requirements for vortex flowmeter installation: 1. Avoid strong electrical equipment, high frequency equipment, and strong switching power supply equipment as much as possible. The power supply for the instrument is separated from these devices as much as possible. 2. Avoid the direct influence of high temperature heat sources and radiation sources. If you must install it, you must have it. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the details of the article on the precautions for installing vortex flowmeters. Installation environment requirements of vortex flowmeter: 1. Avoid strong electrical equipment, high frequency equipment, and strong switching power supply equipment as much as possible. The power supply for the instrument is separated from these devices as much as possible. 2. Avoid the direct influence of high temperature heat sources and radiation sources. If it must be installed, heat insulation and ventilation measures must be provided. 3. Avoid high-humidity environment and strong corrosive gas environment. If it must be installed, ventilation measures must be taken. 4. The vortex flow meter should be installed on pipelines with strong vibration as far as possible. If it must be installed, pipe fastening devices must be installed at 2D upstream and downstream, and anti-vibration pads must be added to enhance the anti-vibration effect. 5. The instrument is installed indoors, and it should be waterproof when installed outdoors. Special attention should be paid to bending the cable into a U shape at the electrical interface to prevent water from entering the amplifier housing along the cable. 6. Ample space should be left around the instrument installation point for wiring installation and regular maintenance. Instrument pipeline installation requirements: 1. The vortex flow meter has certain requirements on the upstream and downstream straight pipe sections of the installation point, otherwise it will affect the flow field of the medium in the pipeline and affect the measurement accuracy of the meter. The length requirements of the upstream and downstream straight pipe sections of the instrument are shown in the figure. Note: The regulating valve should not be installed upstream of the vortex flow instrument as much as possible, but should be installed 10D downstream of the vortex flow instrument. 2. The inner diameter of upstream and downstream piping should be the same. If there is a difference, the inner diameter Dp of the piping and the inner diameter Db of the vortex meter meter should satisfy the following relationship: 0.98Db≤Dp≤1.05Db The upstream and downstream piping should be concentric with the inner diameter of the flow meter, and the misalignment between them should be less than 0.05Db. 3. The gasket between the instrument and the flange should not protrude into the pipe during installation, and its inner diameter should be 1-2mm larger than the inner diameter of the meter. Installation steps of vortex flowmeter 1． Open the pipe according to the requirements of the opening size, so that the position of the opening meets the requirements of the straight pipe section. 2. Put the complete flowmeter with the upper flange into the open pipe. 3. Perform spot welding positioning on both sides of the two flanges. Remove the flowmeter, weld the flange as required, and clean up all protruding parts in the pipeline. 4. Install the sealing gasket with the same diameter as the pipe in the inner groove of the flange, install the flowmeter in the middle of the flange, make the flow direction of the flowmeter in the same direction as the fluid, and then connect it with bolts. Installation of flowmeter on horizontal pipeline: 1. When measuring gas flow, if the measured gas contains a small amount of liquid, the flowmeter should be installed at a higher part of the pipeline. 2. When measuring liquid, if the measured liquid contains a small amount of gas, the flowmeter should be installed at the lower part of the pipeline. Installation of the flowmeter in the vertical pipeline: 1. When measuring gas, the flowmeter can be installed on the vertical pipeline, and the flow direction is not limited. If the measured gas contains a small amount of liquid, the gas flow should be from bottom to top. When measuring the liquid flow direction, the liquid flow direction should be from bottom to top. Matters needing attention in the installation of vortex flowmeter 1. The installation of the flowmeter must be carried out as required to avoid damage to the instrument due to improper installation and affect the measurement accuracy. 2. The flowmeter should be installed on a long overhead pipeline as far as possible. , Due to the sagging of the pipeline, it is easy to cause seal leakage between the flowmeter and the flange. If it must be installed, the pipeline support points must be set at the upstream and downstream 2D ​​of the flowmeter. If the measured medium needs to be compensated for temperature and pressure (such as steam , compressed air), the pressure measurement point should be at the downstream constraint ~5D of the flowmeter, and the temperature measurement point should be at 4~8D downstream of the flowmeter flow (as shown in the figure below). 3. In the pipeline for measuring steam, in order to prevent conversion If the temperature of the meter is too high, at least half of the connecting rod of the meter should not be kept warm (as shown in the figure above) In order to facilitate observation and wiring, the meter head of the meter can be rotated 360 degrees in the original position. Just tighten. If the installation direction of the meter head of the flowmeter is downward, the tight nut must be wrapped and sealed with waterproof tape. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Precautions for Installing Vortex Flow Meters'

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