Domestic orifice flow meter manufacturers

Abstract: The information of domestic orifice flowmeter manufacturers is provided by excellent flowmeter and flowmeter manufacturers. Domestic orifice flowmeter manufacturers 1. Overview This product is carried out in accordance with the international standard ISO5167 or the national standard GB/T2624. No real flow calibration is required. It is sturdy and simple in structure, easy to install, stable in performance and reliable in use. The pressure-taking methods include ring-chamber pressure-taking. More flowmeter manufacturers select models and price quotations. You are welcome to inquire. The following is the article details of domestic orifice flowmeter manufacturers. Domestic orifice flowmeter manufacturers 1. Overview This product is carried out in accordance with the international standard ISO5167 or the national standard GB/T2624. No real flow calibration is required. It is sturdy and simple in structure, easy to install, stable in performance and reliable in use. The pressure taking methods include ring chamber pressure taking, separate drilling pressure taking and flange pressure taking. Nominal pressure, less than 40 Mpa. when≥At 20 Mpa, a high-pressure lens orifice plate or an all-welded orifice plate is used. Nominal diameter, 50~100mm, when the nominal diameter is less than 50mm, it needs to be made into a flat orifice plate. The accuracy is±0.5%~±1.5% domestic orifice flowmeter manufacturers 2. Installation requirements Many customers will be careless during the installation process, and some do not pay attention to small details, which will affect the use of the orifice flowmeter, and various problems will occur after long-term accumulation. First it depends on whether you are measuring gas, liquid or vapor. The gas pressure tap is on the upper part of the pipeline; the liquid pressure tap is on the side but not directly below, and the sediment particles will block the pressure tap; for steam, the pressure tap is on the side of the pipeline. 1. Before installation, check whether the number and size of the throttling device meet the requirements of the installation position of the pipeline. 2. For the newly installed pipeline system, the orifice plate must be installed after flushing and sweeping in the pipeline. 3. Pay attention to the installation direction of the orifice plate“+”No. should think about the flow rate. 4. The center of the orifice plate should coincide with the center line of the pipeline, and the concentricity error should not exceed 0.015 (1/β-1) value. 5. When the orifice plate is installed in the pipeline, it should ensure that its end face is perpendicular to the axis of the pipeline, and the perpendicularity error should not exceed±1°. 6. The gasket used for clamping the orifice plate (including between the ring chamber and the flange, between the ring chamber and the orifice plate) shall not protrude into the inner wall of the pipeline after clamping. 7. The installation place of the orifice plate must be tight, and no leakage is allowed. Therefore, the installation work must be carried out before the pipeline pressure test. 8. The pressure guiding pipe shall be laid vertically or inclined, and its inclination shall not be less than 1:1. For fluids with higher viscosity, the slope should also be increased. 9. In order to avoid distortion of differential pressure signal transmission, positive and negative pressure guiding pipes should be laid as close as possible, and anti-freezing measures should be taken in severe cold areas. Electric heat or steam can be used for heat preservation, but it is necessary to prevent the superheated vaporization of the measured medium and the generation of gas in the pressure guiding pipe to cause false differential pressure. 10. When installing the orifice plate, you can ask the manufacturer for the required length of the front and rear straight pipe sections, or install it according to the front 20D and the rear 10D (D refers to the diameter of the orifice plate). 11. The pressure guiding pipes drawn from the positive and negative pressure taking ports must be kept parallel in any case. Debugging of the orifice flowmeter: 1. Connect the signal line and power line 2. Open the inlet and outlet valves, and the opening of the inlet and outlet valves should be the same. 3. Open the stainless steel three-valve balance valve, and slowly open the valves on the high and low pressure ends of the orifice plate. After the fluid passes through the flowmeter, close the stainless steel three-valve balance valve. 3. Features 1. Removable and inspectable: The root valve can solve the problem of transmitter disassembly and pressure pipe blockage. Closing the root valve can cut off the passage of the measurement system and pipeline, which can facilitate the disassembly and assembly of components such as the three-valve manifold and differential pressure transmitter. Closing the three-valve group can cut off the connection between the pipeline and the differential pressure transmitter. If the pressure-taking hole of the orifice plate or the root valve is blocked, it can be pressurized and purged through the water injection hole of the radiator. It is also possible to open the sewage outlet of the radiator for sewage discharge (the liquid should be refilled after the sewage is discharged), and the liquid injection hole of the radiator can also judge the blockage of the root valve when necessary. 2. Anti-one-way pressure impact: The three-valve group can be opened through the middle valve to avoid single impact on the differential pressure transmitter when opening and closing the pipeline valve during operation. 3. Liquid tightness: close the root valve, first fill the pressure system with liquid to play the role of liquid sealing. The filling liquid can be kept in the pressure pipe, so that any pipeline medium cannot enter the differential pressure transmitter, which can prevent thermal shock and air bubbles. Adding appropriate antifreeze can achieve reliable antifreeze. 4. Liquid or gas isolation can be achieved: when measuring liquid or gas, the cooling device can be filled with isolation liquid or water, and liquid-liquid isolation or gas-liquid isolation can be performed to effectively protect the differential pressure transmitter from corrosive liquids and Invasion of dirty gas. 5. Heat resistance and balance: The liquid level in the two radiators can be kept the same through the overflow of the liquid when the liquid is injected into the radiator, so as to ensure the accurate measurement of the differential pressure transmitter; liquid, but also to ensure that the differential pressure transmitter is not damaged by overheating. 6. Composite measurement of differential pressure, pressure and temperature: The comprehensive design of pressure transmitter and composite amplifier can provide pressure and temperature measurement signals for correct flow calculation and low cost. Reduce the cost of some transmitters and connecting wires when temperature and pressure compensation is required. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Domestic Orifice Flow Meter Manufacturer'

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