Calsense Flow Meters, model FM, are used with all Calsense irrigation controllers to monitor real-time flow of potable or non-potable water, making them important tools in detecting mainline and lateral breaks on an irrigation system. Real-time system flows are learned automatically at night when irrigation comes on, so that constant flow rates are measured and can provide the most accurate and reliable monitoring of breaks and problems as they occur.
The Calsense Flow Meter features a proprietary, non-magnetic sensing mechanism and a six-bladed design. Its unique, forward-swept impeller design provides higher, more constant torque than less efficient four-blade designs and it is less prone to fouling by water-borne debris. The advanced design of the Calsense Flow Meter, coupled with an absence of magnetic drag, delivers improved operation and consistent repeatability at lower flow rates.
As liquid flow turns the Calsense Flow Meter’s impeller blades, a low impedance 9VDC signal is transmitted with a frequency proportional to the flow rate. The signal can travel up to 2,000’ between the Calsense Flow Meter and the Calsense Controller, without the need of amplification. Calsense controllers require no additional interface and supply the DC signal directly to the Calsense Flow Meter.