Paddle Wheel Flow Rate Indicator & Totalizer
This microprocessor based flow meter utilizes an 8 digit liquid crystal display (LCD). Isolated monitoring locations are also viable as power is supplied by a five to seven year long-life battery. The paddle wheel, spinning at a rate linearly proportional to the velocity of the flow, activates a switch once per revolution. The time it takes the paddle to rotate, divided into the diameter of the pipe, results in the flow rate. Flow rate variations from turbulence are minimized by a microprocessor averaging process. The user can choose to display the flow rate, the accumulated flow or alternate between the rate and totalized flow. To retain the totalizer value, the reset button can be deactivated.