ADV pressure sensor resolution

Dear forum members...

I use two vectors, the first one was bought 5 years ago and we bought a new one at the beginning of this year. I deployed these two instruments at the same place, close to each other. When I compare significant wave heights calculated from the pressure sensors of the ADVs, results are similar except in absence of wave (or with very small waves). When looking at the raw data, it seems that resolution is better for the old one. Did Nortek change the pressure sensors recently ? Could we upgrade our pressure sensor?

Many thanks
Regards
Romaric Verney

Dear Romaric

Does both pressure sensors have same pressure range?  This is normally written on the label.

Best regards

Atle Lohrmann