An embedded system for measuring dust density using triblow effect

The flow of solid particles in air streams is used in industrial systems to transport solid particles. This method involves many variables and complex phenomena and it is inherently difficult to analyze. The measurements of on-line flow parameters due to complex flow regimes are affected by challenging factors: such as particle size, average flow velocity, humidity, pipeline type, material type, mixed material properties and geometry-related difficulties. The aim of this thesis is to perform a theoretical study of the solid flows in air streams and to design a test rig based on electrostatics for the measurement of flow parameters. In this thesis, the ring type sensor has been chosen for the test rig due to its simplicity. Low noise and high gain amplifiers are designed to measure the voltages induced by the charged particles passing through sensors. The charge amplifier circuit used in experiments is capable of measuring the airborne particles, ions and even electrons for use in both current and future studies. Experiments have been carried out using ten different sensors with varying width to diameter. In the study, Gaussian fitted curve model according to the previous studies have been validated and velocities of particles falling with gravity through the sensors are measured.