I don’t know if you work for the company or not, but you are clearly not listening to what a large number of customers have been saying for several months. The controller is perfectly capable of performing these calculations, or sending them to a server which can do so–it is simple arithmetic. To expect your customers to perform these calculations manually or even with the aid of a spreadsheet is ludicrous. Every single drip irrigation emitter that I’ve ever seen measures flow rate in GPM or GPH. No one uses precip. rate. I’ve never heard a clear explanation of why this has not already been implemented, or why precip. rate has such a tenacious hold on Rachio engineering. For states like California, which is in its fourth year of prolonged drought, there has been a huge migration to drip irrigation. The controller also needs to allow direct input of flow rate from reading a water meter. For drip irrigation, there is little change in flow due to changes in pressure, which was an excuse I’d read earlier. Drip is typically pressure regulated down to no more than 25 PSI, and variations in pressure have virtually no effect on flow. I know exactly how much each of my circuits use by reading the meter. Multiplying the number of emitters times the emitter flow rate gives a pretty good approximation as well.
Until this flaw is fixed, I won’t be recommending the Rachio to our water department, or any of my clients. I really don’t know what the problem is, and I’m growing very tired and frustrated with the standard response of ‘well, here’s how you calculate that!’. Is this an intelligent controller or not? If it is, it should be doing any calculations of this type. I’m wondering if the product decisions makers actually read this forum. If so, are you getting the message?