Water management is an important concern of many national and international organizations today. Water consumption minimization is a primary pre-condition to achive Sustainable Developement Goal (SDG). This is also associated with long term environmental issues. Increased water consumption has many harmful impact like decreasedlevel of groundwater, over usage of pumping power etc.  Therefore water consumption in irrigation, industry, municipalities etc. are crucial to take account for. One of the key strategy to implement this is to monitor liquid flow rate. This gives us an idea on water consumption behaviour and how to increase water efficiency. In industry, flow rate monitoring can also be used to detect leakage by analyzing flow data.