Hi all, Thanks for all the info, I'll take a good look at all those links. I have two tanks to monitor but they are interconnected so their basic fill level will be identical as they are both mounted on the same pad, thus I only really need to monitor the level of one to know the level in the other.
FYI... one tank is a 2500L poly and the other is a 4300L corrugated steel Colorbond tank. I'll need to use WiFi for network so I could use a 1-Wire to Wifi gateway for that if I go down the 1-Wire path. In any case it will all be battery/solar powered. The LoRaWAN stuff looks interesting, I'll have to investigate that too. thanks Tim On Wednesday, 19 April 2023 at 13:38:08 UTC+10 Graham Eddy wrote: > i continue to run my old pressure river level sensor with my new > ultrasound river level sensor. > i found the cable from pressure sensor (at river bottom) to prioprietary > transmitter (above flood level) very inconvenient, whereas ultrasound > sensor/transmitter are together (above flood level), much more convenient. > as i am measuring out in the open, i don’t have the echo issues described > for a tank. but i will add that there are pressure sensors avail for > LoRaWAN. > cheers > *⊣GE⊢* > > On 19 Apr 2023, at 3:41 am, MikeQ <[email protected]> wrote: > > Having worked on industrial water systems for many years, I highly > recommend you use a pressure transducer to measure water tank levels > instead of ultrasonics. I have a 2500 gal poly irrigation tank in my yard > with a booster pump. It was there when I bought the house so I didn't get > to pick the tank and I had to use an ultrasonic in the top of tank as there > were no locations to mount a pressure transducer at the bottom of the > tank. Ultrasonics in tanks need to be mounted in the middle of the tank so > they are not effected by the tank walls, and at low water levels you can > have issues with the signal bouncing off the bottom of the tank. Even with > a good mounting location, you are going to have some echo in a closed tank > and that will make your signal less stable. > > > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/83b2b21c-3d63-40f3-a363-643707778544n%40googlegroups.com.
