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Industry Information
Improving work efficiency after correct selection of vortex flowmeter
2012-4-16 11:16:06

采用先进数控设备加工传感器的表体和旋涡发生体等,确保加工精度,从而使零部件(特别是旋涡发生体)的通用性强,真正做到不会因零部件的更换而影响传感器的重复性和精度;能产生强大而稳定的涡街信号。 Dongxiang Intelligent Vortex Flowmeter uses advanced numerical control equipment to process the sensor body and vortex generator to ensure processing accuracy, so that the universality of parts (especially the vortex generator) is strong, and it will not really be caused by parts. The replacement of the sensor affects the repeatability and accuracy of the sensor; it can generate a strong and stable vortex signal. The radiator structure adopts a horizontal structure, which transfers less heat to the enlarged part than a flow meter with a vertical radiator structure, and the heat dissipation area is large, and the heat dissipation is faster, which makes the sensor more reliable and has a longer life. long.

进行的大量波形分析和频谱分析,设计出了最佳的探头形状、壁厚,高度、探头杆直径及与之相配套的压电晶体,采用先进的数控车床进行加工,确保加工的同轴度和光洁度等精度,配合特殊的工艺处理,从而克服涡街流量计存在的固有自振荡频率对信号的影响这个通病。 Dongxiang instrument technicians have designed the best probe shape, wall thickness, height, probe rod diameter and the corresponding piezoelectric crystals through a lot of waveform analysis and spectrum analysis on the vortex flowmeter for a long time. Advanced CNC lathes are used for processing to ensure the accuracy of coaxiality and smoothness of processing, and to cooperate with special processes to overcome the common problem of the inherent self-oscillation frequency existing on the vortex flowmeter. This is the unique technical advantage of Dongxiang Instrument in making vortex flowmeters. The probe of a capacitive vortex flow sensor is composed of a pair of differential capacitors. The vortex force generated by the vortex generator alternately acts on both sides of the probe, so that the differential capacitance in the probe changes, and is converted into a flow electric pulse signal by an amplifier. The unique internal structure makes the probe have good anti-vibration performance and short-circuit resistance. The base body of the probe capacitor plate is made of imported high temperature resistant material, which has high temperature resistance. The intelligent sensor has the universality of gas and liquid, the automatic pass band tracking, no need for potentiometers or toggle switches to adjust the frequency band and sensitivity, no zero drift, free range setting, and truly realize field-free debugging. This circuit can suppress different vibration frequencies, enhance anti-vibration performance, and have a linearization function.

的选型正确后不但可以提高工作的效率,同时也可以提高测量的精准度。 The correct selection of the vortex flowmeter can not only improve the work efficiency, but also improve the measurement accuracy. Vortex flowmeters are generally used to measure high-viscosity media such as crude oil, crude oil, and hydrogen, and are very important measurement tools. When selecting a vortex flowmeter, there are a few basic principles that need to be followed: meet basic functions; do not choose special instruments when the basic instrument is optional; coordinate with the original system, and consider future updates and developments; use generalized performance Price comparison concept, comprehensive performance, reliability and installation, maintenance cost comparison, etc .; At the same time, before the selection, you need to know the specific classification of the vortex flowmeter in order to choose the best vortex flowmeter. The classification of the vortex flowmeter is as follows: 1. According to the signal type: flow sensor and flow transmitter; 2. According to the structure and installation: integrated and separated type, the separated type is based on inspection; 3 According to the use environment: test circuit components away from high temperature, underground or high altitude or other inconvenient environments; you can also choose whether there is a local display 4. According to the type of power supply: system power and battery power; choose according to different types The quickest and most effective way. In order to be convenient to use, you need to know some basic information before the selection, such as: the principle, characteristics, application occasions of the instrument, the structure, appearance and installation dimensions of the instrument, the accessories that match the instrument, supporting instrument information, etc. These are the prerequisites for proper use. After the selection is complete, it is necessary to start the correct installation of the vortex flowmeter. Correct installation will bring satisfactory use. It is recommended that you read the operation manual before proceeding with the installation. For the position, straight pipe, azimuth, flow direction, the positioning of the flange alignment must be clear. Electrical wiring is very critical and requires careful linking. After installation, check and then power up. Dongxiang Intelligent Vortex Flowmeter is a stress-type vortex flowmeter that measures flow based on the Carmen vortex street principle. It has a large signal-to-noise ratio, high sensitivity, and strong vibration resistance. The signal circuit adopts single-chip microcomputer technology for data processing. The CPU unit, storage unit, display unit, communication unit and other functional modules are packaged in the amplifier circuit. It has RS485 communication function and has very stable zero point and accuracy. It is widely used to measure the volume flow and mass of superheated steam, saturated steam, compressed air and general gases and liquids.