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In this thesis, a system was developed to address a problem related to the packaging of chemical liquids. The issue arises in chemical production plants where container packaging is done manually and with free-flowing methods. Therefore, the most crucial parameter for the system to compute is the flow. To achieve this, the system needs to know the viscosity of the chosen chemical liquid, as well as the pressure at the tank outlet. Viscosity is directly correlated with the temperature of the chemical liquid. Thus, the system gathers temperature and pressure measurements, which are processed by conversion circuits to be manageable by the microcontroller. Temperature data is transmitted to a local server, which in turn sends back viscosity data to complete the calculation of the estimated flow rate. During the filling process, weight measurement is taken, and the actual flow rate is calculated based on time to prevent any potential errors. User input for selecting the appropriate chemical liquid is done through a keyboard, while data presentation occurs on a screen consisting of five digits. Container filling is carried out by an air-controlled valve to prevent sparks, and air control is managed by a solenoid valve placed at a safe distance from the chemical liquid. This precaution is necessary as many chemical liquids are flammable and could cause a fire. During testing, it was found that there was a problem in accurately detecting the flow rate in more watery chemical liquids and in small requested filling quantities. To address this issue, a flow adjusting device should be installed before the output valve.