Also remember that the 1st generation ICAD had a problem with keeping the closed position.

I found that for the DN25, they would loose the "zero" over approx 6-8 days.

Larger valves would be approx 14-20 days.

a quick calibration fixed it for another week, if you also twisted the ICAD 3mm off center after a calibration it would hold for a few days extra

The issue was still there on some of the early 2nd generation ICADs, not as pronounced as on the 1st gen.

There was a software upgrade a year or two of the 2nd gen, and that seems to have eliminated the issue.
If I remember correctly, the upgrade was that if the valve was at 1-2% opening degree, it would remain shut, and if it stayed at 1% over x amount of time the ICAD would do an extra turn towards closed.

icad.jpg