Domel, d.o.o. specializes in development and manufacturing of electric motors, blowers, vacuum motors and components. The testing of these products requires measurement of many quantities, which can mostly be measured with voltage. For this purpose, the company uses voltage input modules from NI.
Electric voltage is one of the fundamental derived units of the SI system. Its measurement is crucial in engineering. To ensure effective measurement, the voltage input modules must be calibrated regularly. The process of calibration consists of two parts. First, we must check the voltage deviations and then adjust the calibration constants.
This thesis explains the fundamentals of a LabVIEW application, that is used to automatically calibrate the voltage input modules. The application enables fast and simple calibration. First, we must choose an input module in the settings, then we can start the verification process or the adjustment process with a press of a button in the user interface. During this process, the application tells the user what voltage must be set on the calibrator. After the calibration, a table of set and a table of measured voltages appear in the user interface along with an indication of adequacy.
The test results show that a voltage input module measures voltage more correctly after calibration. All acquired voltages do not exceed the set limits.
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