Economic Pipe Flow Meter

Abstract

Application of small inexpensive water flow meter (15 mm at approximately Baht 770 per unit) to measure flow in large pipe (300 mm at approximately Baht 110,000 per unit) is theoretically investigated. Small meter is attached to large pipe to create parallel flow. Using basic pipe flow theory. Relationship between flow through the meter and flow in large pipe is established. The relationship confirms theoretical feasibility of the application. Performance comparison between the device and off-the-shelf meter for large pipe revels that their performances are comparable Comparison items include:  ranges of measurable flow, associated errors and head losses. Laboratory investigation is yet to be conducted.