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Beltweigher is an instrument used to measure and control the solid flow rate in industries. It allows the continuous weighing of materials as they are transported through the conveyor. It usually form a part of the conveyor equipment where it replaces a particular section of the conveyor belt. There are various factors such as belt tension, belt stiffness, location and alignment which affect the accuracy...
To assure the accuracy and safety of thermal detection, the thermal flowmeter must be calibrated before using. In order to reduce the uncertainty in a calibration system, the paper presents to build a calibration system for large flowmeter based on the combination of the mass method and master meter method. Meanwhile, the system simulation, monitor function and data process will be achieved through...
Based on the improved bi-directional pulsed voltage method, a kind of new on-line electrical conductivity instrument was designed. By using the bi-directional pulse-width adjustable voltage as excitation source, the instrument can adjust width of pulsed voltage automatically according to different solution to eliminate capacitance effect and weak polarization effect. Instrument's hardware is composed...
According to method of the used thermocouple calibration device and the technology of virtual instrument, an auto-calibration system based on Labview is developed. It proposed the concrete design project about hardware and software, especially introduced how to realize the data processing and analysis. The practice showed that the system run well.
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