Low Cost Sensor for Low Flow-Rate Measurement

Many times in industrial application, measurement of very low flow rates is required with fair accuracy. Fluids like natural gas, petroleum and oxygen are supplied to customers on a continuous basis through dedicated pipelines, precise online measurement of quantum of supply is essential for payment purpose. The present work has aimed to design a sensor to measure low flow rate accurately, this sensor uses the important properties of the thermistor, it's self-heating, and its fluid flows sensing property, at the same time efforts have been made to keep it cost effective