Re: Tank Depth


"Joerg" <notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx> wrote in message
news:Gixrg.62605$fb2.62283@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hello James,


With proportional pressure sensors that is going to become expensive.
Unless money is not too important here I'd go with float switches.

But where is the fun in designing curcuits?


True. But since you said you are in a hurry, wife breathing down your
back, reminding you to get it done, saying there are lots more honey-dos
on the list...


What wife? I ain't got no steenking wife.


The lowest pressure rating that I saw was 15 PSI. Too high and I
would have to construct some sort of amplifier to bring up the voltrages
to reasonable levels. The pressure I believe that I would be working
with is about 1.29 PSI (.43*3 Ft.). The range on the MPX5010 is 1.45
PSI and is amplified to have a F/S output of 4.475 VDC with a F/S span of
4.275 with a supply volyage of 4.75 VDC.


Sure, but there is fun in designing circuits :-)))


Sure, but forcing a part to do what it wasn't designed for and not within
the specs when there is one that is doesn't sounf good to me.



Whatever you do keep in mind that stuff like this may have to be serviced
and repaired. Murphy's law stipulates that there will be a driving rain,
gale force winds and some hail when that happens.

Then the irrigation pump shouldn't be running.


Yes, if you don't have a weather pattern like we do. A month of bone dry
weather followed by a huge storm. Then another dry spell comes up,
meantime a sensor croaked but now you have to leave for a lengthy biz trip
to Asia.


I'd like to take a trip to Asia on business. I'd like to have a
business where I could afford to go to Asia.


Maybe I should add a precipitation detector also?


I assume you run it via a sprinkler controller or something like that,
with a master pump output. For many of those you can buy a precipitation
sensor. The really good ones may allow for gradual adjustment of the zone
times depending on how much precipitation there was.



Know of any ones like that?


.

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