Design of the control system of water meter scale test and research

Abstract: the design of the control system of water meter scale test and research on information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Abstract: in the past the main water flowmeter calibration system using manual and half a manual way to control, its defect is low precision, big flow fluctuation, is calibrating table diameter range is small, do not have a high level of automation, low efficiency of inspection table. In this paper, based on water flow meter. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the design of the control system of water meter scale test and research articles for details. Past water flowmeter calibration system is mainly controlled by manual and half a manual way, its defect is low precision, big flow fluctuation, is calibrating table diameter range is small, do not have a high level of automation, low efficiency of inspection table. In this paper, according to the requirements of the water flow meter calibration process, combining with the working conditions of the original verification system, on the basis of oil chemical automatic control system design specifications, water meter calibration control system is designed. The control system with computer and the inverter as the core, has realized the automatic control in the true sense, reduce the labor intensity of the workers, improve the labor efficiency, full range of water meter calibration tasks can be completed, save the test cost, ensure the normal operation of production. 1, the system of the system core, collecting and distributing control manner, the host machine adopts high quality research China IPC industrial-grade computer and 21 & Prime; Large screen monitor, mainly to undertake system administration tasks, such as a variety of data and signal detection, storage, analysis and processing; Various graphics, images, curve according to read; To check the monitoring events, fault alarm, record, certificate check printing, etc. The next bit machine adopts Japanese OMRON company produces the programmable controller, industrial system of the implementation of all control tasks, the execution of the actions, the output of the control mode, are carried out by the lower machine PLC, as the control center, it with extremely high frequency continuously all sorts of data and information exchange with PC to realize system control. The whole test system is divided into system control part and the field test execution part, through the cable connection between the two parts. 1 system control part of the system control part is divided into five parts, as shown in figure 1. （ 1) The center of the whole system console ( System control cabinet) It includes a research China IPC - 586 industrial computer, a 21 & Prime; Large screen monitor, a DPK - 8400 paper printer, a set of OMRON200H programmable controller PLC, 11 sets of distributor, 6 sets of switch power supply, 10 air switch, 3 ac contactor, an alarm, a signal processor, a set of four road isolated relay, a frequency adjust potentiometer and 30 buttons and indicator lights. （ 2) Checked table output power and signal wiring and no - table data operation counters this ark is propped in test site, the canal on the operation panel, digital display tube with film, ready buttons and lights, abrupt stop button, the power switch, pluggable control button and the connection cable. （ 3) Solenoid valve in ark cabinet is equipped with 8 sets of solenoid valve and four relay, including four sets of solenoid valve control of four standard tank bottom valve switch, two two commutator of the reversing solenoid valve control. This 6 solenoid valve can not only realize the automatic control by computer and can realize manual control via a button control on the ark, every button with signs in order to avoid wrong operation. The other two, electromagnetic valve, a spare a control switch DG200 pipe pneumatic water drain valve. Four relays offer PC bottom valve switch state. （ 4) Frequency converter cabinet this ark is propped up by canal of 175 kw inverter, anti-interference reactor and intermediate relay, air switch, ac contactor and some other electrical components, its main function is used to implement the motor start and stop of frequency conversion. Inverter starting and stopping is divided into automatic and manual two work modes: when the inverter work automatically, automatic selection by the upper machine to start the motor, by the machine according to the test when the flow of set point frequency control signal to frequency converter. When need to manually start the inverter, the on site & other; Manual/automatic & throughout; Control button to manual work mode, can be realized by adjusting the frequency converter on frequency adjust potentiometer, and the frequency of manual adjustment can be realized by the transformation of the system control ark button field and long-distance operation control room. Variable frequency ark also equipped with vacuum pump water tank liquid level relay control. （ 5) Electrical control operation counters the ark from all around the power distribution cabinet group into operation, its main function is to pump room inside the motor power supply and on the operation panel to realize manual frequency and power frequency startup; Mounted on the operation panel & other; Manual/automatic & throughout; Switch,, stop the pump button 15, state light is 26. 2 in-situ test execution parts field test execution by standard table, inspection table, frequency converter, the standard of cans, commutator, pump group.

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The first machine to produce tuning fork liquid density meter, the fork density meter manufacturer mass flow meter was invented in rosemount coriolis mass flow meter in endress hauser coriolis mass flow meter by digital fork density meter and was subsequently improved.