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| G1/2" Water Flow Sensor Enclosure https://aquatictechtank.com/viewtopic.php?f=29&t=191 |
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| Author: | mistergreen [ Sun Mar 08, 2015 2:37 pm ] |
| Post subject: | G1/2" Water Flow Sensor Enclosure |
http://www.seeedstudio.com/depot/G12-Wa ... -1915.html USD $9.50 There should be little resistance with this as it has a rotor that spins with the flow of the water freely and the rate of the rotor is measured with a Hall Effect sensor (electromagnetic field). |
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| Author: | mistergreen [ Sun Mar 22, 2015 10:01 am ] |
| Post subject: | Re: G1/2" Water Flow Sensor Enclosure |
| Author: | mistergreen [ Sun Mar 22, 2015 10:03 am ] |
| Post subject: | Re: G1/2" Water Flow Sensor Enclosure |
Ready for testing. Make sure to add a 10K pullup resistor between signal & 5V. I took 2 readings on a small canister filter with no medium. The sensor does limit output but only by 5-11%. While the filter was running, the arduino read anywhere from 9-12L/minute. It varies I'm not sure why; maybe that's how filters run but I'd have to account for margin of error on the sensor and my errors. It might be better if I took multiple readings and average them out instead of take a calculation ever second. It's fairly accurate with actual numbers being 11.13 l/m, and 10.97 l/m. I used my iPhone as the stop watch. |
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