Thanks, that was a good advice!
My tank size is 60L (15.85 gallons)
I measured the output of the sensor after fill up and it was 14.8 gallons, which is roughly 93.35% of full capacity. I've had 96% upper threshold set by default, so no surprise ultra gauge wasn't detecting a fill up. I set up upper threshold at 93% and ultra gauge detected fill up. But the thing is, it displayed 14.8 gallons of fuel available instead of 15.85 after fill up detection... after manual fill up instruction (long press up) it showed 15.85 gallons.
Will see if it will work fine after next fill up.
Admin, is it normal?
Thank you in advance,
Alex