Pool Systems Automation: Difference between revisions
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→Water Flow
Matt Parnell (talk | contribs) |
Matt Parnell (talk | contribs) |
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Output water flow is monitored by a paddle wheel 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. | Output water flow is monitored by a paddle wheel 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. | ||
A 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. | A 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. | ||
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