Estimation of Liquid Parameters using Arduino based Ultrasonic Rangefinder Sensor

There are a number of physical and control variables that affect the optimal monitoring of industrial and commercial processes in industries and power plants. The variables involved in the processes generally include the physical phase of occurrence of matter, temperature, pressure, density and level. All level measurement systems rely upon various characteristics of the process materials such as density, capacitance and temperature and has its own benefits and limitations. Depending on the nature of process materials, level estimation of liquids can be broadly classified into contact methods and
non-contact methods. Ultrasonic method of non-contact type sensors interfaced with Arduino Uno is highly preferable for estimating the level of corrosive and non-corrosive liquids and fluids. The Arduino Uno an open-source microcontroller board possess a number of facilities for communicating with external systems such as computers and sensors. By determining the level, various other parameters such as density, pressure and bulk modulus of the fluid can also be estimated which affects the industrial processes.

Keywords: Level Measurement, Process control, Arduino Uno, Liquid parameters, Non-contact method, Open source microcontroller, Optimal monitoring, Rangefinder sensor