Pool Systems Automation: Difference between revisions
→Output Water Flow
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==== Output Water Flow ==== | ==== Output Water Flow ==== | ||
The output water flow is monitored by a | [[File:Pool Output Water Flow Meter.jpg|thumbnail|The output water flow meter.]] | ||
The output water flow is monitored by a paddlewheel flow meter that generates a sine wave with a frequency proportional to the flow rate. A flow "transmitter" (GF Signet 8512) translates that analog output from the flow meter into a 4-20 mA signal proportional to the flow rate. | |||
The value is considered valid if the current measured is greater than or equal to 4 mA (not an open circuit). The low and high thresholds are based upon the required flow turnover rate for the pool volume and a maximum to avoid issues (channeling) in the filter tanks. | The value is considered valid if the current measured is greater than or equal to 4 mA (not an open circuit). The low and high thresholds are based upon the required flow turnover rate for the pool volume and a maximum to avoid issues (channeling) in the filter tanks. | ||