Coriolis mass flowmeter scale features and daily use

Abstract: the coriolis mass flowmeter scale features and daily use information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Our trade measurement USES is to settle the quality, tianchen bo rui mass flowmeter can directly measuring the quality of the fluid, a big advantage in foreign trade. Especially for oil metering work that had to know the performance of the mass flowmeter to. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the coriolis mass flowmeter scale features and daily use articles for details. Our trade measurement USES is to settle the quality, tianchen bo rui mass flowmeter can directly measuring the quality of the fluid, a big advantage in foreign trade. Especially for oil metering work this, have to know the performance of the mass flowmeter and the method of daily use, in the later use process, will exert the role of the mass flowmeter to zui. A coriolis mass flowmeter, the working principle of coriolis mass flowmeter measurement part is mainly composed of elastic measuring tube, vibration unit, unit, closed-loop self-excited vibration picking amplifier unit, etc. Working principle is: the elastic vibration unit to maintain sensitive structure is given priority to with elastic sounding pipe in resonant state, the measuring tube & other; Bending vibration & throughout; ; When the mass flow rate through the vibration of the measuring tube & produced by other Coriolis effect & throughout; Make the sounding pipe in the above & other; The main vibration & throughout; On the basis of produce directly and through & other; Mass flow & throughout; & other related; Torsional vibration & vice throughout; ; By testing the measuring tube & other; Complex vibration & throughout; Can get directly to the mass flow of the fluid. Obviously, coriolis mass flowmeter is stable and reliable to work, the key is to ensure that in the vibration of the ideal state, namely in the practical application to curb or minimize the impact. Second, the main factors influencing the measurement performance and solution 2. 1 installation stress in the process of the installation of the mass flowmeter, if flowmeter sensor flange and pipe at the center of the shaft not aligned ( The sensor flange and pipe flange is parallel) Or pipe temperature change, pipe stress generated by the formation pressure, torque, pull to the mass flowmeter measurement tube, cause the asymmetry or deformation of test probe, which can lead to zero drift, cause measurement errors. The solution: 1) Flow meter installed strictly abide by the specification. ( 2) After the installation of the flow meter, bring up & other; Zero menu & throughout; Default, and record producer zero zero after looking at zero value at this time, if the differences between the two values, Two values to ensure an order of magnitude) , the installation of stress is larger, should be reinstalled. 2. 2 environmental vibration and electromagnetic interfere with the normal work of the mass flowmeter, the measuring tube is in a state of vibration, and is sensitive to external vibration. If in the neighborhood of the same support platform or there are other vibration source and vibration source of the vibration frequency and mass flowmeter measurement tube itself may work frequency influence each other, cause the abnormal vibration of flowmeter and zero drift, cause measurement error, will cause flow meter will be able to work; At the same time as the sensor is through the vibration excitation coil measurement tube, if there is a larger magnetic field interference, near the flowmeter will be larger effects on the measurement results. Solution: currently, as the mass flowmeter the continuous improvement of production process and technology, such as: high tianchen company, Beijing bo rui companies such as the application of DSP digital signal processing technology and MVD technology, compared with the previous simulation equipment, front-end digital processing of signal to noise is greatly reduced, the measurement signal is optimized, the instrument selection should be limited as far as possible when considering which has the function of the flow meter. But that does not fundamentally eliminate the interference, therefore mass flowmeter in the design and installation should be far away from the large transformer, motor and other large magnetic field equipment, its incentive to prevent interference magnetic field. When cannot avoid vibration interference, and vibration tube, vibration isolation with a flexible pipe connection between the mounting isolation measures, such as flow meter and the vibration source isolation. 2. 3 measurement medium pressure when the operating pressure and the influence of test pressure difference is large, due to changes in the medium pressure affect the measurement tube taut degree and degree of the effect of fabric damage measuring tube of symmetry, which cause the measuring sensitivity change of flow and density sensor, for high accuracy measurement or cannot be ignored. Solution: we can use the mass flowmeter pressure compensation and bring pressure zero adjustment to eliminate or reduce this effect. The pressure compensation configuration has two methods: ( 1) If the operating pressure is a known a fixed value, then you can input on mass flowmeter transmitter external pressure value to compensate. ( 2) If the operating pressure change is significant, can carry out mass flowmeter configuration in the transmitter, to polling a external pressure measuring equipment, through this foreign pressure measuring equipment for real-time dynamic pressure value to compensate. Note: the configuration pressure compensation, flow calibration pressure must be provided. 2. 4 two-phase flow problem, the current meter manufacturing technology also can achieve accurate measurement of single-phase flow, while in the process of actual measurement, when conditions change, the liquid will vaporize, into two phase flow, and thus affect the normal measurement.
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coriolis density meter mass flow meter may be adapted for use at any rosemount vortex flow meter and is suitable for v shape coriolis mass flow meter.
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