I am looking for a way to measure water level in a sump pump pit. actually have 5 pits.
step 1 is to monitor water level in each pit and datalog
step 2 is to attempt to maintain water level
but for step 1, the sensor is needed I have been reading about capacitive sensors, a tube in a tube with insulator in between looking for information on how to select insulators from easily available parts. pvc pipe, plastic sleeve, heat shrink, etc.
any suggestions ?
also, will copper pipe that oxidizes, will that effect the operation ?