I’m working on trying to efficiently utilize my level sensors for ATO and AWC functions. Which is best and feasible? Can ATO and AWC utilize or share the same sensor?

Imagine that the sensors are stacked top to bottom on the sensor holder rod.

1.
AWC & ATO top optical sensor shared
ATO low level, optical sensor
AWC Low level, optical sensor

2.
AWC top & ATO (single sensor function) Optical sensor, shared Or is a float sensor prefered?
AWC low, optical sensor


Second question is, does the optical sensor need a certain amount of clearance from the point to any surface? For instance, when the sensor is mounted on it’s GHL mount the clearance between the acrylic rod mount and sensor is very small when set up this way.... Hope that makes sense.