Design And Implementation Of Flow Integrating Instrument Verification System Based On Secant Method

Flow meter measurement applications and the flow of physical parameters, the condition of body temperature, working condition of pressure is closely related, and presents the complex function relation. In order to standardize design, production and use of all kinds of flow meter, international standardization organizations and industry associations from all over the world have formulated the corresponding standard operation on the basis of the flow measurement function relations. And flow rate at present, the verification flow tantalizer. Especially computer is based on the state quality inspection administration issued ?JJG 1003-2005 verification flow tantalize especially regulation.Flow integrating instrument verification regulation is to put the flow integrating meter is with the transmitter, flow body closely unifies in together, the verification of the theoretical calculation value completely according to the relevant national standards are given to calculate the mathematical model. Because there are many types of the flow meter, by the physical parameters of flow media complex, the calculation formula of each different, therefore, urgent need a complete set of discipline content test software, so that the flow integrating instrument calibration work more convenient, fast, accurate and fair. Therefore, this topic is developed based on string section method verification system flow tantalizer. Flow integrating device factory in order to meet user, cycle and the needs of the online test. According to the requirements of verification regulation of flow integrating instrument verification is the standard deviation of pressure, temperature, table and component signal input by inspection instrument, the output flow rate of test instrument to value compared with the theoretical value calculated system software, and the measurement error of test instrument is calculated. The main test verification system flow tantalizer. Features include:instantaneous flow conversion error, the cumulative flow calculation error, and output the output error of measurement of physical channel. This paper discusses the verification flow tantalizer. Especially system, the design and implementation of system mainly includes the PC software and hardware system integration. Software part, in view of the different types of a table flow meter and the different types of fluid to calculate the physical parameters, the compression coefficient and working condition of the instantaneous mass flow, volume flow rate, the value of volume flow. The hardware parts, a task application the company series of ADAM module for system integration design, realize the current, voltage and frequency of the multi-channel signal acquisition and output. Measured input flow tantalizer. Especially for standard signal value, PC software to process the output data collected through the communication agreement, whether by measuring instrument conform to the requirements of the test, research contents belong to the thermal measurement of academic areas.Subject test of the designed flow tantalizer is a collection of computer software technology, electrical measuring technology, automatic control technology, which integrates automatic verification system by writing a lot of calculation function of flow tantalizer. Operation process, through the research of China ADAM module to realize the hardware function, completed the automated test process, which not only improves the work efficiency, reduce the labor intensity of commissioner, also improve the reliability of the test data, but also make the flow secondary table detection capability has greatly improved. The system can be widely used in measurement, war industry, electric power, oil field, metallurgy, chemical industry, etc.