Linear Flow Orifice Meter Designs for Pre-set Flow Rates

Introduction

The LFOM mimics the Sutro weir with a series of holes positioned vertically on a riser pipe. Due to the approximation, and rounding errors, it is currently assumed that several preset designs are more accurate than a program that accepts any plant flow rate. The pre-set designs will ensure that there is never a ordering of holes simliar to 1, 0, 2, 1. This occurs because in the second row the number of holes requested was a fractional amount and then in the subsequent row the program calls for 1 and a fractional hole which rounds to two holes. Installation of a LFOM for a higher flow rate than necessary won't degrade th performance and it is a way to ensure quality in the design.

Designs for pre-set flow rates