I have a project I'm working on called Sonic Dip Stick
that measures the amount of oil I have in my oil tank. Right now I ping the oil every 24 hours, but I was wondering what is the recommended time between pings over an indefinite time before I wear the device out?
Obviously I don't need to check the oil level more than a couple times a day for a decent oil usage statistic, however I have come up with a new requirement.
I'd like to place a display outside the house (the tank is inside) where the supplier fills the tank. I'd like to be able to detect a rapid change in oil level so that it can be presented on the display. The supplier will see an accurate oil level as he is filling. But I also don't want to over work the sensor by taking pointless measurements when no activity is occurring within the tank. Also, I'd like to not require the use of some other sensor for detecting motion within the tank or anything like that.
So again, bottom line, how frequent can I take measurements for an indefinite period without putting undue stress on the sensor?