Simple analysis of vortex flow meter scale automatic verification system design

Abstract: a simple analysis of vortex flow meter scale automatic verification system design information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. With the development of national economy, especially the implementation of the strategy of rise of central China, wuhan area of all kinds of chemical industry, food industry more and more, the use of small vortex flow meter and calibration requirements also more and more high, small diameter measurement was more and more heavy. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a simple analysis of vortex flow meter scale automatic verification system design article details. With the development of national economy, especially the implementation of the strategy of rise of central China, wuhan area of all kinds of chemical industry, food industry more and more, the use of small vortex flow meter and calibration requirements also more and more high, small diameter measurement was more and more attention. At present, most of the flowmeter calibration system is completed under manual, through manual regulation standard device to calibrate flow upstream of the gate valves no visual operating interface, laborious work, especially for manual control noise greatly, body caused great harm to operators. Vortex flowmeter based on c + + Builder automatic calibration device not only solved the above problems well, and it has a simple hardware connection, easy programming, beautiful interface, etc. C + + Builder is an open environment, which makes it with any connection between the measurement hardware is very simple; It is a graphical programming language, and easy to learn, it provides the tools to make it programming several times faster than in other languages. Provide flexible means of debugging, can set breakpoints and you can set the probe, observe the change of the data flow in the program is running. The design concept of the verification system 1. 1 quality standard of the principle of work will be checked as required flow meter installed in the test line, start the pump, pump water from the tank into the high water tower or water tank, when the water began to overflow, in turn, open the switch valve and control valve, the water vortex flowmeter are checked, commutator and by-pass line into the pool. Began to test, after the regulator will flow to the required flow operation, start the commutator make water by the by-pass pipe in weighing container, at the same time trigger timing, counting system start recording detected flowmeter and value for measuring time, when the water reaches the commutator, make water by weighing container in the bypass line, stop the flow meter and timer signals recorded at the same time. More electronic scale according to the output of the quantity and the detected flowmeter flow value, to determine detected flowmeter measurement properties. Relevant article recommended: using the results of the calibration device inspection accuracy of pressure transmitter analysis 1. 2 standard table method, the working principle of standard table part of the standard table method flow standard device can be composed of a single standard table, as shown in figure 1, can also be composed of many sets of standard tables in parallel. The main working principle: to standard vortex flowmeter ( Can be the critical flow velocity meter, volumetric flowmeter, flow meter, mass flowmeter and heat table, etc. ) As the standard, make the fluid at the same time interval and checked through standard flowmeter flowmeter, compare the two output flow rate value, to determine detected flowmeter metering performance. Verification system the driver and software design of the 2. 1 driver hardware drivers is application programming interface of the hardware, it contains specific hardware can accept commands, complete with data transfer between the hardware. Communication between industrial PC with instruments, want to use VISA function. First of all to open the instrument communication using VISAOPEN function; Secondly certain statements with VISAWRITE written to the regulator. To complete the corresponding operations, computer reading regulator data collected from the VISAREAD function. After the completion of the operation, using VISACLOSE function between closed and instrument communication. Drivers are contained in the controller can identify statements, these statements can find in the regulator's manual, statements contained in the measured quantities unit selection, type, is closed channel, digital filter and several measurement, etc. Relevant article recommended: three chang differential pressure transmitter with the quality and service to win public praise. 2. 2 interface design is the operator, in turn, automatic/manual JiaoDian input mode selection, open automatic/manual mode selection, choice of volumetric flow meter/mass flowmeter, press & other; Starting test & throughout; Button to run the program, you can choose a traffic stop on the line, according to the check point flow open air valve, wait for after the flow stability in measurement verification of pipeline pressure, temperature, equivalent calculation standard flow, measuring flow, obtained the data records in the flowmeter calibration record. According to the & other; Verification results & throughout; Button to view the test record; According to the & other; Print certificate & throughout; Button to print the certificate;
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