Abstract: steam flow meter scale no signal output process information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Steam flow meter with no signal output processing method 1, confirm with flow 2, supervisory power, across the electrodes at both ends of the voltage must be in 10. 5 - 50 VDC between A, if the voltage is zero, check the power supply fuse B, if the voltage is low but not zero, flowmeter may be loaded. More flow meter manufacturers choose model price quote you are welcome to inquire, below is the steam flow meter scale no signal output processing method the article details. Steam flow meter with no signal output processing method 1, confirm with flow 2, supervisory power, across the electrodes at both ends of the voltage must be in 10. 5 - A, if the voltage is zero between 50 VDC, check the power supply fuse B, if the voltage is low but not zero, flowmeter can load power supply. Open the terminal cover, disconnect the positive and negative poles, measuring the power supply voltage, if the voltage is normal, is that the power supply circuit is normal, will open the electronic module is the cathode in C, isolation cover, front terminal electronic module of red, yellow and green line disconnected, measuring the voltage between the red line and green line, if the voltage is normal, the electronic module is damaged, replace electronic module D, if still showed low voltage, the shell/terminal is damaged, replace shell or return the instrument to examine Foxboro repair 3, 4 - A and 4-20 ma output circuit 20 ma loop can be through the field test socket on output terminal board testing, its produce 0. 1 - 0. Voltage signal and 4-5 20 ma current signal corresponds, before this, please ensure switch J in a state of because the test socket is not available in pulse output mode B, increasing flow to make sure the instrument is not under the scope of work and low flow blocking. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
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mass flow meter can be applied in different ways as rosemount vortex flow meter.

Abstract: the scale vortex flowmeter proper lightning protection information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Vortex flowmeter is a kind of common flow measurement instruments, measurement accuracy, stable performance, flexible use, high reliability and convenient maintenance, etc. Vortex street flowmeter in use need to pay attention to the lightning protection, lightning for effects of vortex flowmeter. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a vortex flow meter scale lightning protection article details how to correctly. Vortex flowmeter is a kind of common flow measurement instruments, measurement accuracy, stable performance, flexible use, high reliability and convenient maintenance, etc. Vortex street flowmeter in use need to pay attention to the lightning protection, lightning for effects of vortex flowmeter is very big. Small make up today is to introduce specific lightning protection method of vortex flowmeter. Under the first lightning to the harm of vortex street flowmeter: 1, after the power part caused by lightning intruded into the burn out instrument. 2, thunder and lightning the instrument electronics to produce at the same time with strong magnetic field induction, instantly generate strong voltage and current, breakdown of insulation meter burn out. 3, pulse wave through the wireless network caused by lightning intruded into the flow meter burn out communication chip or instrument. Its main problems, the instrument is usually installed in less people, way to go; Heat pipe is very long, the way overhead ground is; Users are generally in the development zone, far from thermal power plant location, sparsely populated, overhead pipeline relative became the object of lightning; Urban heating is mainly hotel, bathroom, etc. , where the earth relative to the environmental pollution is serious, soil electrolyte concentration is higher, is liable to be struck by lightning; Instrument and meter box is usually installed in the outdoor. The wind rain, easy to rust oxide, grounding effect worse and worse. So what are the effective lightning plan? 1, the external lightning protection. Including the lightning rod, lightning protection zone, downlead, grounding, etc. 2, the internal lightning protection. In the front of the need to protect equipment installation suitable lightning protection device, the device and circuit and the earth form a conditional equipotential body. Both supplement each other, be short of one cannot. External lightning protection system to protect building ontology from lightning, and lightning protection is to prevent the internal induction thunder and other forms of overvoltage invade the equipment damage, this is the external lightning protection cannot be guaranteed. Lightning protection work is a persistent work, in the work to trial and error and to improve, improve work efficiency and management level of measurement. In special weather, lightning more seasons, especially summer for the protection of the instrument or very be necessary, do some prevention measures, can effectively reduce the harm of instrument, so as not to cause unnecessary losses. 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 comparison information of the measurement accuracy of the gas flow meter and other products is provided by the excellent flow meter and flow meter manufacturers. The gas flowmeter adopts the traditional differential pressure flowmeter principle to ensure the durability, practicability and long service life of the product. At the same time, it has the advantages of high measurement accuracy and good stability. Flow measuring instruments for various gas flow measurement. gas flow. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the comparison article of gas flowmeters and other products. The gas flowmeter adopts the traditional differential pressure flowmeter principle to ensure the durability, practicability and long service life of the product. At the same time, it has the advantages of high measurement accuracy and good stability. Flow measuring instruments for various gas flow measurement. The gas flowmeter is a product used to measure the precision of the chemical industry. It can accurately measure the results. The issue of environmental protection and energy saving has attracted more and more attention from the country. The mechanical properties used in various chemical plants determine the production and processing. Energy saving and environmental protection. How to compare the accuracy of flow meter measurement is the problem we will explain below. Let's take a detailed look at several simple methods of measurement comparison to properly assess the accuracy of meter measurement data. When using the pump flow test to compare the measurement data of the plug-in vortex flowmeter before the operator is not very recognized, it is often used on the pump nameplate.“specified performance point”The rated flow of the pump or the flow reading corresponding to the typical pressure-flow characteristic curve of the pump is compared. If the two flow values ​​are inconsistent, the meter is considered to be inaccurate, and the meter maintenance personnel are immediately notified for inspection. It was found that the instrument was abnormal, so the two sides held their own opinions and disputes. In fact, the flow rate of the pump is often misunderstood, because the delivery flow of the pump is determined by the intersection of the characteristic curve of the pump and the load characteristic curve of the piping system, which changes with the operating load characteristics. Rated flow refers to the flow under certain specified conditions, and in most cases the actual flow and the rated flow, and in most cases the actual flow and the rated flow are not consistent. In addition, the rated flow of the pump is also specified to allow a tolerance of 4% to 8%. The pressure head-flow characteristic curve of each pump of the same specification will be different from the typical curve, and the conveying flow is also different. It is the measured pressure head-flow characteristic of the pump, and there may be an error of 2% to 3.5% between the flow value and the real value, so the flow value of the pump cannot be used as the basis for judging whether the flow meter is accurate. However, it can be cross-referenced during daily operation. If there is an abnormal change in the difference, it can be regarded as a fault phenomenon, so as to further check the water pump, instrument and piping system to determine the cause of the fault. We will solve your problems with the most professional attitude and the best service. Our products have excellent performances such as high precision, high temperature resistance, high pressure resistance, wide adaptability, safety and stability. We have been committed to the development of instruments and focus on the importance of quality. So choosing to cooperate with us is a decision you can never go wrong with. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Comparison of Measurement Accuracy between Gas Flow Meter and Other Products'
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Abstract: Factors to be considered in the selection of gas flow meters are provided by excellent flowmeter and flowmeter manufacturers. It is a very important step for customers to select the type of flowmeter for the site. It is necessary to comprehensively consider the actual working conditions of the site to select the most suitable metering instrument. The following is a flowmeter from Heshunda to share with you about the selection of gas flowmeters. factor:. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the factors to be considered in the selection of gas flowmeters. It is an important step for customers to select the type of flowmeter for the site. It is necessary to comprehensively consider the actual working conditions of the site to select the most suitable metering instrument. The flowmeter will share with you the factors that need to be considered in the selection of gas flowmeters: 1. Accuracy level: Generally speaking, the selection of turbine flowmeter is mainly based on its high accuracy, but the higher the accuracy of the flowmeter, the more sensitive it is to changes in the field conditions of use. Therefore, the choice of meter accuracy should be Caution, should be considered from an economic point of view. For the trade settlement instruments of large-diameter gas pipelines, it is cost-effective to invest more in the instruments, and for occasions where the transportation volume is not large, the medium-precision level can be selected. 2. Flow range: The selection of the flow range of the turbine flowmeter has a great influence on its accuracy and service life, and each type of flowmeter has a certain measurement range, and the selection of the flowmeter diameter is also determined by the flow range . The principle of selecting the flow range is: the minimum flow rate in use shall not be lower than the minimum flow rate allowed by the instrument, and the maximum flow rate in use shall not be higher than the maximum flow rate allowed by the instrument. For intermittent work occasions where the actual running time of the instrument per day does not exceed 8 hours, select 1.3 times the maximum flow rate in actual use as the upper limit of the flow range; for continuous working occasions where the actual running time of the instrument per day is not less than 8 hours, select the 1.4 times the maximum flow rate during use as the upper limit of the flow range. The lower limit flow rate of the instrument is appropriate to be 0.8 times the actual minimum flow rate. 3. Gas density: The influence of gas flow meter and fluid physical properties is mainly gas density, which has a greater impact on the meter coefficient, and is mainly in the low flow area. If the gas density changes frequently, corrective measures should be taken to the flow coefficient of the flowmeter. 4. Pressure loss: try to choose a turbine flowmeter with a small pressure loss. Because the pressure loss of the fluid passing through the turbine flowmeter is smaller, the energy consumed by the fluid from the input to the output pipeline will be less, that is, the total power required will be reduced, which can greatly save energy, reduce transportation costs, and improve utilization. . Some people have done tests, and the main component that affects the pressure loss is the front deflector of the turbine flowmeter. Compared with the front deflector of the semi-ellipsoid, the pressure loss of the former turbine can be greatly reduced. 5. Structural type: (1) The reverse thrust turbine flowmeter should be selected for the internal structure. Because the reverse thrust structure can keep the impeller in a floating state within a certain flow range, there is no contact point in the axial direction, and there is no end face friction and wear, which can prolong the service life of the bearing. (2) According to the pipeline connection method, the flowmeter has two types of horizontal and vertical installation. The horizontal installation and pipeline connection methods include flange connection, threaded connection and clamp connection. Flange connections are used for medium diameters; threaded connections are used for small diameter and high-pressure pipes; clip-on connections are only suitable for low-pressure pipe diameters; vertical installations are only threaded. (3) Selection according to environmental conditions, considering the influence of temperature and humidity. Natural gas metering should choose intrinsically safe explosion-proof turbine flowmeter. 6. Bearings: The bearings of turbine flowmeters are generally made of three types of materials: tungsten carbide, polytetrafluoroethylene, and carbon graphite. Natural gas measuring instrument bearings should be made of tungsten carbide. If you have other questions about flowmeters, please feel free to consult. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Factors to Consider in the Selection of Gas Flow Meters'
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The selection of gas flowmeter should be considered from the following aspects: 1. Accuracy grade: Generally speaking, the turbine flowmeter is selected mainly because of its high accuracy, but the higher the accuracy of the flowmeter, the more sensitive it is to changes in site conditions. Therefore, the accuracy of the instrument should be selected. Be cautious and think economically. Turbine flowmeter 2. Flow range: The selection of the flow range of the turbine flowmeter has a great influence on its accuracy and service life, and each flowmeter has a certain measurement range. The choice of flowmeter diameter also depends on the flow range. . The principle of selecting the flow range is that the smaller flow rate should not be lower than the smaller flow rate allowed by the flowmeter when used, and the larger flow rate should not be higher than the larger flow rate allowed by the flowmeter when used. 3. Gas density: For gas turbine flowmeters, the influence of fluid properties is mainly the gas density, which has a great influence on the meter coefficient, mainly in the low flow area. If the gas density changes frequently, corrective action should be taken on the flow coefficient of the flowmeter. 4. Pressure loss: try to use a turbine flowmeter with small pressure loss. Because the pressure loss of the fluid through the turbine flowmeter is smaller, the less energy the fluid consumes from the input to the output pipeline, that is, the total power required will be reduced, thereby saving energy, reducing transportation costs, and improving utilization. . 5. Structure type: (1) The internal structure adopts reverse thrust turbine flowmeter. Because the reverse thrust device can make the impeller float within a certain flow range, there is no contact point in the axial direction, and there is no friction and wear on the end face, which can prolong the service life of the bearing. (2) According to the pipe connection method, the flowmeter has two installation methods: horizontal and vertical. There are flange connection, thread connection and clamp connection for horizontal installation and pipeline connection. Gas flowmeters are widely used in various fields such as scientific research, industry, commerce and people's life. Such as ventilators and oxygen inhalers in medical equipment; household membrane gas meters used in people's daily life; flowmeters that adjust the direction angle of the traveler in space by relying on the flow rate; modern industrial production lines used for production process gas Flow meter; the flow meter required by the environmental protection department to check the air sampling, etc.
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