How to install the vortex flow meter reasonably?

Abstract: How to install the vortex flow meter reasonably? The information is provided to you by the excellent manufacturers of flowmeters and flowmeters. The correct installation of the flow measuring instrument is an important part of ensuring the normal operation of the instrument. If it is improperly installed, the accuracy of the instrument will be affected at light, and the service life of the instrument will be seriously affected, and even the instrument will be damaged. Vortex flowmeters are essential in industrial production. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is how to install vortex flowmeters reasonably? Article details. The correct installation of the flow measuring instrument is an important part of ensuring the normal operation of the instrument. If it is improperly installed, the accuracy of the instrument will be affected at light, and the service life of the instrument will be seriously affected, and even the instrument will be damaged. Vortex flowmeter is an indispensable instrument for measuring flowmeters in industrial production. It can measure gases such as superheated steam, nitrogen and other gases, and measure liquids such as water, methanol and so on. Now let's talk about how to install the gas vortex flowmeter correctly. (1) The installation environment requirements of the gas 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, there must be ventilation measures. 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. It is best to install the instrument indoors, and pay attention to waterproofing 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. (2) Installation requirements for gas vortex flowmeter instrument pipeline: 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 Figure (3) Figure (3) Note: The regulating valve should not be installed upstream of the vortex flow meter as much as possible, but should be installed 10D downstream of the vortex flow meter. 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 0.05Db3. 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 meter4. Installation design of pressure measuring holes and temperature measuring holes. When the pipeline under test needs to be installed with temperature and pressure transmitters, the pressure measuring hole should be set at 3-5D downstream, and the temperature measuring hole should be set at 6-8D downstream, see Figure (7). D is the nominal diameter of the instrument, unit: mm5. The instrument can be installed horizontally, vertically or inclined on the pipeline. 6. When measuring gas, install the instrument in the vertical pipeline, and the gas flow direction is not limited. But if the pipeline contains a small amount of liquid, in order to prevent the liquid from entering the measuring tube of the instrument, the air flow should flow from bottom to top, as shown in Figure (4) a 7. When measuring liquid, in order to ensure that the pipe is filled with liquid, when installing the instrument in a vertical or inclined pipe, the flow direction of the liquid should be guaranteed from bottom to top. If the pipeline contains a small amount of gas, in order to prevent the gas from entering the measuring tube of the meter, the meter should be installed at the lower part of the pipeline. As shown in Figure (4) b Figure (4) 8. When measuring high temperature and low temperature media, attention should be paid to thermal insulation measures. The high temperature inside the converter (in the case of the meter head) should generally not exceed 70℃; the low temperature will easily cause condensation inside the converter, reduce the insulation resistance of the printed circuit board, and affect the normal operation of the meter. 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 vortex flow meter reasonably? 》

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