Patent ID: 9476740
Filing Date: 2016-10-25
CPC Classification: G01D,G01F

Claim Text:
1. A method for detecting a reverse flow condition in a meter, the method comprising the steps of: accumulating, by a microcontroller in the meter, an amount of reverse flow in the meter over a time period; determining, by the microcontroller, whether the accumulated amount of reverse flow over the time period exceeds a threshold value; and upon determining that the accumulated amount of reverse flow over the time period exceeds the threshold value, providing, by the microcontroller, a reverse flow alert, wherein accumulating the amount of reverse flow in the meter over the time period comprises periodically determining a reverse pulse count indicating a number of reverse flow pulses that occurred since a last measurement and adding an amount of flow represented by the reverse pulse count to a backflow accumulator in the microcontroller.