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Carwash Pit Cleanout sensor

bbohica

New member
Would love some advice and input from this community. I just started a new job and they have asked me to develop a sensing product that can tell how full the pit is and when it needs to be emptied, instead of just sending a truck out to clean it every month and cleaning a 1/4 full pit. I think it's a cost savings measure.

Do you all use something like this? Does it exist already?

I'm assuming a carwash pit is not like a septic system in that it isn't full of water all the time, it is just solids?

Any reason a simple time of flight distance sensor wouldn't work well to check the depth?

Are there any gotcha's I need to look out for in designing such a thing?
 
I have my 1x4" fits perfectly through my grates and I have marks on the wood showing how many inches below the drain the mud is.

Sounds like a solution looking for a problem
My thoughts as well, solution looking for a problem. But when a big chain carwash center has a few thousand stores, and tell us they would buy this thing if we had it, we're definitely going to investigate making it!
 
My thoughts as well, solution looking for a problem. But when a big chain carwash center has a few thousand stores, and tell us they would buy this thing if we had it, we're definitely going to investigate making it!
What car wash chain has a few thousand sites?

Mister has 500 and they’re the biggest in US from what I know.
 
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