Abstract: the domestic electromagnetic flowmeter scale commonly used maintenance information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Electromagnetic flowmeter 1, daily maintenance of maintenance and administration we all know that any products need to reasonable maintenance and maintenance, to increase its service life, the instrument is not exceptional also, Thermocouple, transformer, flow meter, etc. ) 。 Only for instrument. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the common use of the domestic electromagnetic flowmeter scale maintenance article details. Electromagnetic flowmeter 1, daily maintenance of maintenance and administration we all know that any products need to reasonable maintenance and maintenance, to increase its service life, the instrument is not exceptional also, Thermocouple, transformer, flow meter, etc. ) 。 Just to make periodic visual inspection instrument, check the instrument surroundings, remove dirt, ensure no water and other substances, check whether the connection is good, check meter ever new strong electromagnetic field near equipment or have new wire across the instrument. If measured medium easy contamination electrode precipitation, scaling, or within the measuring tube wall cleaning scales, cleaning should be done regularly. 2, troubleshooting or normal operation after the flowmeter from the start was put into operation, after a period of time after the instrument work found abnormal, should first check the flowmeter external circumstances, such as power supply are in good condition, pipe leakage or in the full package condition, whether there is air bubbles inside the pipeline, signal cable is damaged, the converter output signal ( After the instrument input circuit) If open circuit. Bear in mind that blind overhaul flow meter. 3, sensors, check the test equipment: 500 m & Omega; Insulation resistance tester, a multimeter. Testing procedures: 1) Under the condition of the pipeline with medium, measured with A multimeter terminals A, B and C, the resistance value between A minus C、B - C resistance between thrown to be equal. If differences in 1 times above, may be electrode, measuring the outer wall of pipe leakage or junction box with condensed water adsorption. （ 2) Under the condition of dry lining, MΩ A - table test C、B - The insulation resistance between C ( Should be greater than 200 m & Omega; ） 。 With A multimeter measuring terminal of A and B and the resistance of the measuring tube two electrodes ( Should be a short circuit connected state) 。 If the insulation resistance is small, the leakage of electrode, it should be a complete set of flowmeter factory maintenance. If the insulation fell but there are still a 50 m & Omega; The above and the step ( 1) Test results is normal, may be measuring the outer wall of pipe be affected with damp be affected with damp, available hot air blower to dry inside the shell. （ 3) The multimeter measure the resistance between one of the X, Y, if more than 200 & Omega; , the excitation coil and the lead wire may be open or poor contact. Remove the terminal board. （ 4) Check the insulation resistance between the X, Y, and C, should be in the 200 m & Omega; Above, if fell, shell internally with hot air drying processing. Coil insulation fall in actual operation will lead to a measurement error increases, meter output signal is not stable. （ 5) If determine sensor is faulty, please manufacturers with electromagnetic flowmeter, generally the scene could not solve, need to the factory maintenance. 4, converters, such as judgement is converter fault, examined the external reason is no problem, please directly with the electromagnetic flow meter manufacturer, factory usually adopt the method of replacement of circuit board to solve. 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 electromagnetic flow meter scale daily maintenance methods of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. General conditional ( Carrying out ISO9001 quality management system) Enterprise inspection ways for: ( 1) And a third will only be used online inspection; （ 2) , 1/3 off line do hydraulic parts after cleaning check; （ 3) And a third offline for flow calibration. Specific operation method:. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the electromagnetic flowmeter scale article details daily maintenance methods. General conditional ( Carrying out ISO9001 quality management system) Enterprise inspection ways for: ( 1) And a third will only be used online inspection; （ 2) , 1/3 off line do hydraulic parts after cleaning check; （ 3) And a third offline for flow calibration. Specific operation method: operating mode 1 enterprise for electromagnetic flowmeter to do a comprehensive inspection every year. Check the content is: appearance inspection, converter characteristic test, measurement calibration, measurement by voltage, measure the insulation resistance, confirm the circuit, etc. Meter check adjustment because of the zero drift, zero point is very important ( “ Online zero & throughout; Must make stops flowing measured medium, actually is not easy to do) 。 Online inspection, therefore, are often omitted contains a check of the operation of the sensor and only implement the converter calibration, so that the online test results and historical data comparison instrument is to continue to use, repair, or update, the excitation coil of sensor is measured insulation resistance degradation decided to update or not. Operation mode 2 through online check whether there is any abnormal phenomenon on validation of electromagnetic flowmeter. To can't stop medium flow pipeline check the flow sensor and converter respectively, with analog signals and other common instrument testing converter has higher calibration accuracy ( It depends on the analog signal accuracy) , liquid resistance sensor examination is to test the electrode, including check the excitation coil excitation connecting cable and copper resistance, insulation resistance and check, the excitation current converter output check the indirect methods, such as magnetic field intensity. To stop the pipeline medium flow conditions, from the preset hole into near the sensor, check all the electricity and lining/sedimentary conditions and cleaning. Check content check electromagnetic flowmeter, in addition to the zero check, will also flow sensor, converter, and separately from the connecting cable. 1, the machine zero check are the technical requirements for the machine zero check: tube filled with liquid flow sensor measurement and no flow, at the scene of the many companies do not have this condition instead of zero check and adjustment of the machine, but can be turned to the converter separate zero check and adjustment. Technically, this must be the sensor check finished and to ensure that the sensor excitation circuit and signal circuit insulation resistance is normal, All include cable) Premise is of practical significance, otherwise the machine cannot run normally. Normally converter single zero negative value also is very small; If the absolute value is greater than 5% of full scale will need to do first check, wait for after confirm the reason to be adjusted again. Electromagnetic flowmeter zero and converter of the machine normally separate zero difference value is less than 1%. Greater than 5% of the zero difference values have many case the user in the closed pipeline valve caused by incorrect zero operation under adverse conditions. 2, connect the cable to check the inspection content is to check signal and field lines each core conduction and insulation resistance, check whether the shield grounding in good condition. 3, converters, check the check the content is to use general instrument and meter type of analog signals instead of sensors to provide matching flow signal is zero and calibration. Calibration including zero check and adjustment, value examination, excitation current, current/frequency output check, etc. It is important to note: check project should check with the last value ( Or the factory value) Comparison, analysis its whether there is a change or change is in line with the original measurement requirements. 4, flow sensor check the examination content is: through the inspection and check of the excitation coil transducer measured by indirect evaluation by the excitation current of the magnetic field intensity is whether to change; Measuring electrode by fluid resistance in the evaluation of electrode surface filth and lining layer adhesion conditions; Check each part to determine parts insulation resistance degradation degree to assess whether can introduce interference. To stop the medium flow conditions of the pipeline can be observed and measured the electrodes and the lining thickness of adhesive layer and to estimate cleaning before and after the adhesive layer due to the flow area of incoming flow value changes.
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Abstract: The installation and maintenance information of thermal gas mass flow meter is provided by excellent flow meter and flow meter manufacturers. Thermal gas mass flow meters are instruments that measure fluid flow using the principle of heat conduction. The instrument uses the constant temperature difference method to accurately measure the gas flow. It has the advantages of small size, high degree of digitization, convenient installation and accurate measurement. Among them the sensor part. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the installation and maintenance of thermal gas mass flowmeters. Thermal gas mass flow meters are instruments that measure fluid flow using the principle of heat conduction. The instrument uses the constant temperature difference method to accurately measure the gas flow. It has the advantages of small size, high degree of digitization, convenient installation and accurate measurement. The sensor part consists of two reference-grade platinum resistance temperature sensors. With a bridge loop, one sensor measures the fluid temperature and the other sensor maintains a constant temperature differential above the fluid temperature, allowing flow measurement under high temperature and high pressure conditions. Installation and connection of thermal gas mass flowmeter 1. Integrated installation and connection requirements (1) If the converter is installed outdoors, an instrument box should be installed to avoid rain and sunlight. (2) It is forbidden to install it in the occasion of strong vibration, and it is forbidden to install it in the environment with a large amount of corrosive gas. (3) Do not share an AC power supply with equipment that pollutes the power supply such as frequency converters and electric welding machines. If necessary, install a purified power supply for the converter. ⑷ The integrated plug-in type should be inserted into the axis of the pipeline to be measured. Therefore, the length of the measuring rod depends on the diameter of the pipeline to be measured, which should be specified when ordering. If it cannot be inserted into the axis of the pipe, the manufacturer will provide the calibration factor to complete the accurate measurement. ⑸ The integrated pipe section type adopts flange connection, which conforms to the national standard GB/T9119-2000. 2. Installation of thermal gas mass flowmeter ⑴Integrated plug-in installation The factory provides pipe connections and valves. For non-weldable pipes, pipe clamps are provided by the factory. For example, pipes can be welded. Weld the connector and the pipeline first, then install the valve, drill holes with special tools, and finally install the instrument. When maintaining the instrument, remove the instrument and close the valve, which will not affect the normal production. (2) For the pipe segment installation, the corresponding standard flange should be selected for connection with it. (3) When installing, pay attention to the markings on the instrument.“Media flow direction marking"To be in the same direction as the actual flow of the gas. 3. When the thermal gas mass flowmeter is commissioned and operated, the potential on the instrument will enter the measurement state. At this time, the data must be input according to the actual working conditions. 4. Maintenance of thermal gas mass flowmeter (1) When opening the casing, be sure to cut off the power first. (2) When removing the sensor, pay attention to whether the pipeline pressure, temperature or gas is toxic. (3) The sensor is not sensitive to a small amount of dirt, but it should be cleaned regularly when used in a dirty environment. Otherwise, the measurement accuracy will be affected. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Installation and Maintenance of Thermal Gas Mass Flow Meters'
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Abstract: The measurement and classification information of gas flow meters are provided by excellent flow meter and flow meter manufacturers and quotation manufacturers. A gas flow meter is an instrument that measures the flow of gas. Installed in the pipeline to record the amount of gas flowing through. Can measure, blast furnace gas flowmeter, coke oven gas mass flowmeter, gas, air, nitrogen, acetylene, phosgene, hydrogen, natural gas, nitrogen, liquefied petroleum gas, peroxide. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the details of the measurement and classification of gas flowmeters. A gas flow meter is an instrument that measures the flow of gas. Installed in the pipeline to record the amount of gas flowing through. Can measure, blast furnace gas flowmeter, coke oven gas mass flowmeter, gas, air, nitrogen, acetylene, phosgene, hydrogen, natural gas, nitrogen, liquefied petroleum gas, hydrogen peroxide, flue gas, methane, butane, chlorine , gas, biogas, carbon dioxide, oxygen, compressed air, argon, toluene, benzene, xylene, hydrogen sulfide, sulfur dioxide, ammonia, etc. Vortex flowmeter: mainly used for flow measurement of industrial pipeline medium fluids, such as gas, liquid, vapor and other media. It is characterized by small pressure loss, large measuring range, high precision, and is almost not affected by parameters such as fluid density, pressure, temperature, viscosity, etc. when measuring the volume flow of the working condition. No moving mechanical parts, so high reliability and low maintenance. Instrument parameters can be stable for a long time. Integrated orifice plate flowmeter: It is a high-range ratio differential pressure flow device composed of a standard orifice plate and a multi-parameter differential pressure transmitter (or differential pressure transmitter, temperature transmitter and pressure transmitter). Measuring the flow of gas, steam, liquid and natural gas, it is widely used in process control and measurement in petroleum, chemical, metallurgy, electric power, heating, water supply and other fields. V-cone flowmeter: V-cone flowmeter is widely used in petrochemical, natural gas and other fields due to its simple structure, firmness, easy replication, strong versatility and low price. This product overcomes the shortcomings of standard orifice plates, venturi tubes, nozzles and other throttling devices, such as easy wear, large pressure loss, small range (range ratio), high field installation conditions, and long straight pipe sections. Accurate flow measurement of various fluids over a wide range of Reynolds numbers. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Measurement and Classification of Gas Flow Meters'
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Abstract: The information on the five steps of using the precession vortex flowmeter is provided by the excellent flowmeter and flowmeter manufacturers. At present, the gas flowmeters often used by enterprises in working conditions mainly include precession vortex flowmeter, gas turbine flowmeter, vortex flowmeter, orifice flowmeter, Verabar flowmeter, V-cone flowmeter, metal tube rotameter, Del Taba flowmeter, etc. which spin. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the details of the five-step article using the precession vortex flowmeter. At present, the gas flowmeters often used by enterprises in working conditions mainly include precession vortex flowmeter, gas turbine flowmeter, vortex flowmeter, orifice flowmeter, Verabar flowmeter, V-cone flowmeter, metal tube rotameter, Del Taba flowmeter, etc. Among them, the precession vortex flow sensor is a sensor widely used in various gas flow measurement in petroleum, chemical, electric power, metallurgy, urban gas supply and other industries. The correct use of the precession vortex flow sensor must follow the following five requirements, so as to ensure the measurement accuracy. 1. Correct selection of precession vortex flowmeter is widely used in natural gas, gas and other industries, with stable performance, accurate measurement, and convenient installation. When it has been determined to choose a precession vortex flowmeter, the next step is to determine the flow sensor specifications and The selection of its kits is critical. In a word, you can use it well when you choose it. To this end, two basic principles should be grasped in the selection process; namely: one must ensure the accuracy of use, and the other must ensure production safety. To do this, three selection parameters must be implemented, namely, the maximum, minimum and commonly used instantaneous flow rates in the near and long term, the design pressure of the measured medium, and the working pressure. 2. Calibration before use On the one hand, considering that there are still some difficulties in on-site verification of this type of flow sensor. In addition, if the purchase intention is to use this kind of flow sensor in more important measurement occasions, such as large-flow trade measurement or measurement points with prominent measurement disputes, and the application site does not have the conditions for online calibration of flow, In this case, it is too early to easily determine that all the performances of the flow sensor are qualified based on a factory certificate provided by the manufacturer at the time of purchase. Therefore, in order to ensure the reliability and accuracy of the measurement results of the flow sensor in the future work process, it is necessary to send the flow sensor to the department with the verification ability and qualification for a system verification within the full flow range before the formal installation. . 3. Do a good job in process installation Although this kind of flow sensor does not have too many special requirements for process installation and use environment, any type of flow measurement instrument has such a commonality, that is to avoid vibration and high temperature environment as far as possible. Interfering elements, keeping the inner wall of the straight pipe section before and after the flow sensor smooth and straight, ensuring that the measured medium is a clean single-phase fluid, etc. 4. Strengthen later management Although the precession vortex flowmeter has the characteristics of various automatic disposal functions and low power consumption, it still needs to strengthen the management after it is put into operation. For example, in order to ensure the accuracy and reliability of the long-term operation of the flow sensor, it is necessary to regularly calibrate the system, copy the meter data, replace the medium parameters, check the battery status from time to time, check the flow sensor coefficient and lead seal, etc. 5. Pay attention to internal maintenance. If the measuring cavity of the flow sensor and its components need to be regularly inspected or cleaned due to air pollution or other reasons, then one point must be paid special attention: for the precession vortex flow sensor of the same specification, its vortex The core components such as the generator and the conducting body cannot be interchanged. Otherwise, the metering coefficient must be re-calibrated and the temperature and pressure sensors attached to it must be systematically calibrated. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Five Steps to Using a Precession Vortex Meter'
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