Debris Tolerant Paddle Wheel Flow Meters
The WM-PT paddle wheel flow meter can monitor flows in pipes ranging in size from 1/2" to 8". Wide range in flow rates, negligible headloss and good accuracy at a reasonable price, continue to make these meters popular. Easy removal for cleaning and repair permit the WM-PT meter to be mounted in lines with moderate particulate levels.
This microprocessor-based flow meter utilizes a 21-digit liquid crystal display (LCD). Sturdy, compact,
and water resistant design allows these meters to be mounted outdoors. Isolated monitoring locations are also viable as power is supplied by a long, seven year, 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 are minimized by a microprocessor averaging process. The flow rate, a resettable and a non-resettable totalizer are simultaneously displayed.
Programming is accomplished using embossed buttons on the face. Programming consists of selecting the pipe size and schedule from a list; the default units are gallons/minute and gallons. For sizes not listed, the user can calibrate the meter using a factor derived from the inside diameter of the pipe. The meter can also be calibrated in Liters and cubic feet.