Yes, that's why it did not go in until I added an EKWB 354mm tube above everything else. The sensor is mounted on the botton of that. With the 1000 it moves from 0.0 to about 0.3.

I built a large water-cooled system 2 years ago and purchased both the Flow Meter and a Delta 1000 pressure sensor. But, I messed-up and used a 1-bay square tank that is not really a "water column" so the pressure sensor did not go in. This sensor has 1 port, so it's a fill-level indicator I guess. Yesterday I added a large external EKWB reservoir and installed the Delta 1000 on the bottom. Had to update the firmware then it had all the configuration options. However, I've only seen it bump-up f...