In the verification of the energy meter, as long as the manual participation in the hanging meter, adjust the photoelectric sampler, and correctly design the parameters of the electric energy meter, all the verification items (including preheating, creep test, start test, standard deviation measurement, basic error The measurement is automatically controlled by the PC and completed at one time. The calibration program can be customized according to national regulations or by users. The electric energy meter detecting device is composed of a power frequency digital signal source and a voltage (current) power amplifier. It consists of a voltage (current) output loop, an error handling system, and an operating keyboard. The working principle is characterized by the use of a multi-chip microcomputer system, which exchanges various commands and data through the RS232 interface, and the components are coordinated to form a unified whole. The block diagram of the electric energy meter detection device is as follows: Brief description of the work process: When the master receives the command from the PC or the keyboard, it immediately analyzes the command word and notifies the unit associated with this command to perform the corresponding operation. For example, when the master receives the calibration command, first calculates the magnitude of the test current and switches the current range to the corresponding gear position; then notifies the signal source to perform amplitude modulation and equalization operations; when the signal source is adjusted to this time When testing the required power point, the master computer reads the pulse constant of the standard meter and passes it to the error calculation system, which is to tell the error machine to sample the calculated table and calculate the error; finally, the master computer transmits the error system. The error result or the indication instrument value sent from the signal source is sent to the PC or keyboard for display and processing. The smart meter will have various faults during the running process. This requires the staff to use the relevant device such as the energy meter tester to judge the fault location and the cause of the fault according to the work experience, so as to take an effective solution to ensure the targeted solution. The smart energy meter resumes operation in time. Randm Vape,Gift Package E-Cigarette,Randm Max Pro Cartoon Vape,Colored E-Cigarette Shenzhen Kester Technology Co., Ltd , https://www.kesterpuff.com
Working principle of electric energy meter verification device
Before testing the electric energy meter, the electric energy meter should be correctly connected to the voltage and current output end of the electric energy meter calibration device according to the phase line type of the electric energy meter. The voltage terminals of each group on the device are connected in parallel. When multiple tables are simultaneously verified, the voltage ports of each block can be respectively connected to the voltage terminals of the respective epitopes, and the current loops are required to be connected in series to the device.