[FeatureRequest] Calculated chlorine ppm from the pH and ORP
Opened this issue · 3 comments
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Be cool if it did a calculated chlorine ppm from the pH and ORP.
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https://www.researchgate.net/figure/Relation-between-free-chlorine-concentration-ORP-and-pH-Source-Santa_fig3_320755351
Interesting! this would be great if you could do this!
Note that the chart is only valid at 25C with TA at 100 and TDS at 500. Any change in those values (which in a residential outdoor pool is very likely) would have significant impact on the calculation, ie. it would render it useless.
On my pool I see a daily temperature fluctuation of 2-3 C between morning and evening. I also see my ORP reading get impacted significantly (~50 mV) during the day.
A derived imaginary TC value would buy you nothing. And you can do this today, outside of this plugin, you just need to make a custom template sensor that would take the PH and ORM readings as input and do a two dimensional lookup for the value and load the resulting sensor into this card as the FC sensor.
The question should be asked why we want to monitor the amount of chlorine.
Is it to know whether it should be added? If so, that's a very bad approach, because it may prompt us to add chlorine when we should actually be lowering the pH.