Flow meter manufacturer from China（Kaifeng AFT Instrument Co.,ltd)

The electromagnetic flowmeter should be used carefully to measure the liquid medium of crystallization, as the pipeline conveying fluid has a good thermal insulation, in the heat preservation work will not crystallization, but the electromagnetic flow sensor measurement tube difficult to implement with thermal insulation, therefore, the flow through the measurement tube is easy because of cooling caused by the inner wall knot a layer of solid. Due to the use of other principles of flowmeter measurement also has a crystallization problem, so in the absence of other better methods, the measurement tube length is very short of a "ring" (oring) electromagnetic flow sensor, and the flow meter upstream pipeline with thermal insulation to strengthen. In the pipeline connection method, consider the flow sensor disassembly and disassembling conveniently, once the crystallization can easily remove the maintenance. It is not uncommon to have an electromagnetic flowmeter that is not work...

The insertion type electromagnetic flowmeter installation method divided flow (water) installation and with pressure installation two kinds. For the stop-flow sensor, the method adopts the flange connection. First, the length of the connecting short connection on the pipe is calculated according to the inside d of the pipe inner diameter and the wall thickness s, and the pipe is opened when the pipe is allowed to stop (water). Probe outside diameter for φ39 short nozzle diameter is φ50, the probe OD is Φ62 's short nozzle diameter is φ75, the flange according to the corresponding GB configuration. After opening a hole in the pipe, the short weld with flange is welded to the opening of the pipe, welding the first position after welding, positioning to grasp the main points for the ① probe on the direction of the flow mark and the actual agreement; the ② flange is parallel to the centerline of the pipe, and the center line of the two screw holes on the front of the flange is coincide...

The turbine flowmeter is suitable for the flow rate of the very cryogenic fluid, its advantages are as follows: 1. The pressure loss is smaller. Even the very low temperature of the fluid, its evaporation is small, can be high-precision measurement. 2. Large range. 3. The relationship between flow and output is linear because it detects velocity. 4. Because of the pulse output, it is easy to accumulate calculations. 5. It is easy to install the guide tube. Structure and material of turbine flowmeter: In order to reduce the heat shrinkage and other causes of the possibility of leakage, the main body is generally equipped with flange, rather than threaded joints. In order to avoid the hot and cold effect, the preamplifier part adopts the lengthened withdrawal installment. However, you can sometimes install the heatsink as appropriate. The body, triangle pillar, flange need to use low-temperature material SUS316. Flow measurement range of turbine flowmeter: The diameter of the flowmeter i...

A thermal resistor is a component that converts a temperature change to a change in the resistance value, usually requiring the transmission of a resistor signal through a lead to a computer control device or another instrument. Industrial thermal resistance installed in the production site, and the control room there is a certain distance, so the thermal resistance of the lead to the measurement results will have a greater impact. At present, there are three main ways of thermal resistance. 1. Second-line system: At both ends of the thermal resistance to connect a wire to elicit the resistance signal is called two-line system: This lead method is very simple, but because the connection wire must have the lead resistance r,r size and the wire material and length of the factors, so this lead mode is only suitable for low measurement accuracy of the occasion. 2. Three-line system: In the root of the thermal resistance to connect one end of a lead, the other end of the two-wire connection...

Although the electromagnetic flowmeter is an old-fashioned flowmeter, it has a new type of flowmeter unparalleled advantages: With the development of science and technology, new flow meters are emerging, a wide variety, different performance, and its use of conditions and technical parameters are also different, we have used in accordance with the use of various types of flow meters in the actual application, the existing problems, installation difficulties, performance price ratio and other issues seriously analyzed and compared and demonstrated, It is considered that the electromagnetic flowmeter has the advantages of sensitive reaction, good linearity and high precision, and is not affected by the temperature, viscosity and other factors of the measured medium during the measurement. 1.The electromagnetic flowmeter has high precision, good linearity and stable operation, which improves the accuracy of measurement and the reliability of data, and overcomes the instability of some ins...

When measuring cryogenic medium, the transmitter is limited by two conveniences, one is the low temperature resistance of the material and the other is the electrical insulation problem of the transducer. For general-more than 20 degrees of media, such as frozen brine, usually the transmitter lining materials can be used. However, the use of PTFE materials, PTFE expansion and contraction is more serious. Easy to make electrodes leak. The main problem in measuring cryogenic media is the electrical insulation of the transmitter. When the measuring tube is filled with the flowing cryogenic medium, the phenomenon of condensation water droplets or condensation frost in measuring the outer wall of the tube and the transmitter is easy to happen. In this way, the insulation resistance between the signal circuit, the excitation circuit and the casing is reduced, even short circuit. In this case, we can seal the shell with a resin or sealant. The use of transducer shell filled transformer oil to...

Electromagnetic flowmeter for the advantages of frozen water detection: For example: No pressure loss, high precision, good stability. However, due to the characteristics of chilled water, some problems should be paid attention to in the use of electromagnetic flowmeter. The first is the electromagnetic flowmeter of the internal problem, pay attention to the negative pressure memory problem. When the measurement medium has a certain corrosive, we need to use poly (PTFE) of memory materials. However, the electromagnetic flowmeter with PTFE material cannot withstand negative pressure. There are two solutions to the problem: First, the original vent valve into one-way valve (check valve), in the pipeline when a small negative pressure, the valve automatically opened, from the atmosphere inhaled air, thereby ensuring safety. Second, with skeleton-type memory, the disadvantage is to increase investment costs. The above is the electromagnetic flowmeter in the freezing water measurement shoul...

Split electromagnetic flowmeter measurement principle is based on Faraday law of electromagnetic induction, separated electromagnetic flowmeter consists of sensors and converters, sensors installed in the measurement pipeline, the converter is installed in 30 meters away from the sensor or within 100 meters of the occasion, between the two shielded cable connection. The main components of the split electromagnetic flowmeter are: measuring tube, electrode, excitation coil, iron core and magnetic yoke shell. It is mainly used to measure the volume flow in the conductive liquid and slurry in the closed pipe. such as water, sewage, mud, pulp, all kinds of acid, alkali, salt solution, food slurry, etc., widely used in petroleum, chemical, metallurgy, textile, food, pharmaceutical, paper and other industries as well as environmental protection, municipal management, Water conservancy construction and other fields to measure high temperature, high humidity, inconvenient to observe. ...

Electromagnetic flowmeter If the medium of measurement of long-term relatively dirty, then the electromagnetic flowmeter in the work for a period of time, the electrode will produce scaling. When the conductivity of the scaling material and the conductivity of the medium are not at the same time, the measurement error will be brought. The adhesion of the sludge and oil to the electrode will also cause the instrument output to swing and drift. Therefore, in this case we need to regularly maintain and clean the electromagnetic flowmeter electrode. We introduce several electromagnetic flowmeter electrode cleaning methods for your reference. The common methods of electrode cleaning are as follows: 1. Electrochemical method The electrochemical phenomena of metal electrodes are found in electrolyte fluids. According to the electrochemical principle, there is an interfacial electric field between the electrode and the fluid, and the interface between the electrode and the fluid is caused by t...

Any kind of metering instrument has its installation characteristics, intelligent rotary Vortex flowmeter is no exception. In order to make this instrument better serve the flow metering work, the technical service personnel many years of practical experience shows that the following points of attention should arouse the relevant management and use of the Department's attention. ① attaches importance to instrument selection. In the case where the instrument type has been selected (for example, the intelligent Vortex flow meter), it is important to select the instrument specification and its supporting components. In a word, choose good to use. Therefore, in the selection process should hold two basic principles, namely: one to use precision, two to produce safety. To do this, you must implement three selection parameters, the largest, smallest and commonly used instantaneous flow (mainly used for the size of the selected instrument), the design pressure of the measured medium (main...

China's instrumentation enterprises should change the concept, clear the industry objectives, create a unique enterprise development model and concept. Many instruments and meters enterprises do not know the nature of the industry, do not know the trend of industry development, do not understand their own development needs and objectives, the blind production expansion, but unfavorable to enterprise development. The instrument enterprise should clear the industry target, strengthen the brand effect and the crisis consciousness, establish own brand, create own enterprise culture idea and the development pattern, adapts the economic technology globalization development big background. Although there are no shortage of talents in China's instrumentation industry, it is still a short board in the field of High-tech development reserve talents. Although many enterprises are aware of the importance of scientific research, but also increased the investment in scientific research, but ...