Abstract: how to identify the stand or fall of vortex flow meter scale information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Vortex flowmeter is an extremely versatile flow meter, can be used in almost all gas, liquid and steam flowmeter measurement and control, our company developed with international advanced level of a new generation of HHWJ series digital intelligent vortex flowmeter, it breakthrough. More flow meter manufacturers choose model price quote you are welcome to inquire, here is how to identify the stand or fall of vortex flow meter scale article details. Vortex flowmeter is an extremely versatile flow meter, can be used in almost all gas, liquid and steam flowmeter measurement and control, our company developed with international advanced level of a new generation of HHWJ series digital intelligent vortex flowmeter, it breaks through the traditional analog approach to the limits of the vortex signal, through the modern digital signal processing method of vortex sensor signal identification, screening, to get the normal traffic signals, greatly improve the seismic behavior of the vortex street, fundamentally solves the problems surrounding the vortex for decades is not the earthquake, it is widely used in petroleum chemical industry, light industry, thermal power, the papermaking industries such as water supply, to salt, to the wind flow. Criterion of vortex flowmeters, quality related to two parts: 1, probe; 2, circuit board probe: there are two pieces of piezoelectric crystal, used in vibration interference, used to detect. Probe is lead test piece two fuses, probe shell by the vortex tube wall body inserted, through fixed flange fixed on the vortex tube wall body. Probe under 300 ℃ can work normally, zui high resistance to 350 ℃. If the temperature is high, will damage the seal porcelain body, make the probe performance degradation, even damage the probe. We can use a multimeter & other; × 10k” File inspection probe two fuses, shall be the infinity, if there is resistance, probe performance degradation; If under tens of thousand ohms, probe damage. The design of the circuit board: it is good or not directly related to the vortex signal generated by correctly or not, we can usually oscilloscope see the flowmeter at work produced by the wave pattern. Vortex flowmeter in the production of sensors and the table body sealing is quite important, bad sealing table experience leakage, to crackdown test before they go out, and through the calibration device for flow calibration. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
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Abstract: The reasons for the decline in the accuracy of the flow meter and the solution information are provided by the excellent flow meter and flow meter production and quotation manufacturers. At present, there are many types of flowmeters, but generally used are positive displacement flowmeters, electromagnetic flowmeters, turbine flowmeters, and vortex flowmeters. The accuracy of the flowmeter is generally determined under the reference conditions at the factory. affect the reference conditions. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the reasons for the decline in the accuracy of flowmeters and solutions. At present, there are many types of flowmeters, but generally used are positive displacement flowmeters, electromagnetic flowmeters, turbine flowmeters, and vortex flowmeters. The accuracy of the flowmeter is generally determined under the reference conditions at the factory. There are many factors that affect the reference condition, such as environmental conditions, power source conditions of electromagnetic flowmeters, and fluid conditions. However, the actual operating conditions of a flow meter are usually different from the reference conditions, so there will be a drop in accuracy during use. Also, the degree to which the accuracy of different meters changes is different. The following is an analysis of the reasons for the decline of the accuracy of different flowmeters and the solutions: 1. The accuracy of the throttling device throttling device generally does not require fluid calibration, and the factory inspection is mostly used.“dry label”method, the basic accuracy can be calculated. The calculation is based on the supply provided by the buyer“Rated value”, The density of the medium can be automatically compensated and displayed intelligently. In this case, the key point is whether the installation location of the instrument meets the requirements of the instrument, such as the length of the straight pipe section. If the requirements are not met, the calculation of the additional error should refer to Instruction manual for the instrument. If the density of the medium is calculated manually, when the actual state of the fluid medium is different from the design state, for general gases, the displayed value of flow should be multiplied by a correction factor, and T, Z, and P are respectively designed under the rated working state. medium temperature, compression coefficient, and medium pressure; t, z, and p are the medium temperature, compression coefficient, and medium pressure under actual working conditions, respectively. Obviously, the temperature and pressure of the fluid change randomly during actual work, and the manual compensation of the ultrasonic flowmeter can only compensate the average value, and the error is significant. The better way is to use an intelligent instrument to automatically compensate. For ideal (or near-ideal) gases, this compensation accuracy is quite high, and the accuracy of displayed mass flow or standard volume flow can reach± 1%. The throttling device has certain requirements for the straight pipe section, and the additional error caused when it cannot be satisfied is specified for the standard throttling device. 2. The additional error caused by the positive displacement flowmeter under the actual working conditions of the positive displacement flowmeter is usually due to the influence of the temperature and pressure of the fluid medium on the volume of the metering cavity. When the material of the cavity is known, it can be calculated The change in volume corrects the reading of the display meter. The viscosity of the actual fluid may also have an effect on the meter reading and should be considered according to the meter's instructions. The length of the straight pipe generally does not affect its accuracy, which is the outstanding advantage of this type of instrument. This type of instrument displays the volume flow of the fluid in the working state, and the user usually needs the volume flow or mass flow under the standard state, and also needs to perform the density compensation of the fluid. Most of the new flowmeters now use intelligent display instruments and perform automatic density compensation. 3. The principle of electromagnetic flowmeter The electromagnetic flowmeter is based on Faraday's electromagnetic induction theorem. The inner diameter (flow area) of the sensor's pipeline has an influence on the measured value. When the pressure and temperature of the fluid medium are different from the reference conditions, the difference in the flow area causes the meter Changes in readings can be calculated, otherwise a certain error will occur. The instrument has lower requirements for straight pipe sections. Users of pressure transmitters should pay attention to the fact that there is currently no correction formula when the straight pipe section is insufficient. The meter measures the volume flow in the working state. If the volume flow or mass flow in the standard state is required, density compensation is required. 4. Turbine flowmeter is sensitive to on-site conditions, and it is best for users to fully meet its requirements in order to maintain the accuracy of the factory. When the temperature and pressure of the fluid medium are quite different from the reference conditions, the volume change of the sensor housing can be calculated according to the material and temperature and pressure of the sensor, and the meter reading can be corrected. When the viscosity of the fluid medium in the working state is quite different from the viscosity of the calibration fluid, it should be corrected according to the viscosity correction curve provided by the instrument manufacturer. Turbine flowmeters have certain requirements on the length of their upstream and downstream straight pipe sections, which should be met, especially when users require high precision. The meter displays the volume flow under the working conditions of the medium. To know the standard volume flow or mass flow, density compensation is also required.
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Abstract: The information on the installation and use strategies of plastic tube rotor flowmeters is provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. The main parts of the HC-LZS plastic tube rotameter cone tube are made of AS, ABS plastic, which has good corrosion resistance, reasonable structure, small volume, light weight, and the cone tube is not easy to break. Can be widely used in chemical, environmental protection, food and other industrial sectors. . More flowmeter manufacturers select models and price quotations. You are welcome to inquire. The following is the details of the article on the installation and use strategy of plastic tube rotor flowmeters. The main parts of the HC-LZS plastic tube rotameter cone tube are made of AS, ABS plastic, which has good corrosion resistance, reasonable structure, small volume, light weight, and the cone tube is not easy to break. Can be widely used in chemical, environmental protection, food and other industrial sectors. The main measuring element of the plastic tube rotameter is a tapered plastic tube with the small end down and the big end up vertically and a float that can move up and down inside. Installation of plastic tube rotameter [1] Before installation, the foam support in the meter should be gently taken out with needle-nose pliers, and then re-installed. When installing, pay attention to whether the rubber gasket is installed in the connecting pipe. in the tank to prevent water leakage. [2] The interface of the flowmeter can be connected with the matching ABS plastic pipe, or with the PVC plastic pipe, which can be connected with special glue, or can be connected with the metal flange after connecting with the plastic method. [3] The flowmeter must be installed vertically without obvious inclination. The installation height should be convenient for the reading of the float. When reading, the line of sight and the float should be level. [General standard: the required flow rate is 50%-70% of the maximum flow rate of the flowmeter, try not to use the highest number. ][4] There should be a straight pipe section with 5 times the diameter of the instrument at the inlet and outlet of the instrument. [5] The pressure of the fluid on the side of the flowmeter must be stable. If the fluid is too unstable, the float will fluctuate and cannot be measured correctly. A buffer or a valuer should be installed upstream of the flowmeter. [6] The plastic tube rotameter should be installed vertically, and the angle between the center line of the flowmeter and the plumb line should not exceed 5 degrees. When the plastic tube rotameter is used as an instrument [1], the upstream valve should be slowly opened to fully open, and then the flow rate should be adjusted with the regulating valve downstream of the flowmeter. When the instrument is out of use, the upstream valve should be slowly closed first, and then the flow regulating valve downstream of the instrument should be closed. [2] The indication value of the meter is seen in the middle of the scale line, and the value is read from the scale of the float according to the height of the float. [3] When the cone tube and the float are dirty, they should be cleaned in time. [4] Regularly check the error of the flowmeter. Once the specified error is exceeded, the float and cone should be replaced, or re-calibrated to obtain better accuracy. [5] When the measured fluid is inconsistent with the calibration medium of the flowmeter, it is necessary to correct the indication value. It is expressed by the following formula The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Plastic tube rotor flow meter installation and use strategy'
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Abstract: What are the requirements of the V-cone flow meter for the installation site? The information is provided to you by the excellent manufacturers of flowmeters and flowmeters. What are the requirements of the V-cone flowmeter for the installation site? Usually the protection grade of the V-cone flowmeter sensor shell is IP65, and the installation site requirements are: 1. When measuring mixed-phase fluid, choose a place that will not cause phase separation; when measuring two-component liquid, avoid installing it. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. What are the requirements of V-cone flowmeters for installation sites? Article details. What are the requirements of the V-cone flowmeter for the installation site? Generally, the protection level of the V-cone flowmeter sensor shell is IP65, and the installation site requirements are: 1. When measuring mixed-phase fluids, choose a place that will not cause phase separation; when measuring two-component liquids, avoid installing them downstream where the mixing is not uniform; When measuring the chemical reaction pipeline, it should be installed downstream of the fully completed reaction section; 2. Avoid negative pressure in the measuring tube as much as possible; 3. Choose a place with little vibration, especially for integrated instruments; 4. Avoid large motors nearby , large transformer, etc., so as not to cause electromagnetic field interference; 5. It is easy to realize the place where the sensor is grounded separately; 6. As far as possible, avoid high concentrations of corrosive gases in the surrounding environment; 7. The ambient temperature is -25/-10 ~ 50/60 ℃ Within the range, the temperature of the integrated structure is also controlled by electronic components, and the range is narrower; 8. The relative humidity of the environment is in the range of 10% to 90%; 9. Avoid direct sunlight as much as possible; 10. Avoid rainwater, Will not be submerged in water. 11. If the protection level is IP67 or IP68, the above two requirements 8 and 10 are not required. In short, everyone must pay attention when using the V-cone flowmeter, and everyone should pay attention to safety issues. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'What are the requirements of the V-cone flow meter for the installation site? 》
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