I have a storm cellar with a sump siphon mounted two feet underneath the floor in a cylinder. I'm searching for an approach to identify if the water level has transcended a specific dimension. (Sump siphon isn't working).
Appears to me water sensor get consumed after some time and wind up problematic. So I imagine that leaves a ultrasonic sensor to quantify the water level or straightforward buoy switches?
It is safe to say that one is better/more dependable than the other?
Float switches are very reliable. There are many different types and with some, the electrical part can be located outside the container (with the float inside).
What is the diameter of the cylinder?
friend could you use some type of level sensor as well as these types (https://www.vistronica.com/sensores/sensor-de-nivel-de-liquido-con-flotador-vertical-p52-0-110v-baja-presion-detail.html)
Most float sensors are designed to be mounted into the side of a tank. Drill a hole in the side, push the switch through and tighten the nuts. But you have a sump - you can't drill a hole in the side of it.
There are sensors intended for sumps. They mount on the top of the "tank" and hang down into the water. I suggest a simple switch for reliability - you don't need ultrasonic depth measurement.