OP
Grateful head
Contributor
PZ+ compared to DSAT
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
Here’s a brief write-up with a comparison chart. It’s about selling Oceanics, but that’s OK as the Oceanics offer both.PZ+ compared to DSAT
Thanks to all for responding. So... according to chart above, at 60’ on air, PZ+ is 9 minutes shorter than DSAT and 18 minutes shorter on 32% nitrox. If that is an accurate assessment, that seems fairly significant. The Oceanic article above states the algorithms adjusting differently for deeper dives, repetitive dives and longer surface intervals. I guess the takeaway is that it would be nice to tailor your dive computer to the type of diving your doing. Would it affect someone like me who mostly is a vacation diver doing two dives a day, with one day at three dives ( afternoon or night dive) over the period of a week? Or is the duel algorithm choice more applicable to a live aboard diver doing 4-5 dives a day over a week or ten day period? I don’t see a live aboard vacation in my near future.@Grateful head
The relative difference in NDL between DSAT and PZ+ remains about the same for repetitive dives as it is for first dives. In general, DSAT has about 10-20% more NDL. PZ+ and Suunto RGBM are very similar on the first dive. Suunto tends to be a bit more conservative on repetitive dives, perhaps particularly with shorter surface intervals.
View attachment 639347
Yes that is good to know, want to know real world implications. I’m ok with middle of the road, just don’t want to be the guy who has to go up first when diving with a group and then impede other people’s dive. I realize other factors apply, just don’t want my computer to be the cause of a shorter dive. I never noticed any issue with my very old Suunto.....@Grateful head
You will always have more NDL time with DSAT than with PZ+. Whether the extra time is useful to you, depends. It depends on whether your dive time is limited by NDL or gas time. If you are diving with a buddy or group, it might depend on the NDL or gas time of somebody else. If the boat you are on has a dive time limit, that would be controlling.
DSAT is generally considered a liberal decompression algorithm. PZ+ is generally considered moderate or middle of the road. There are decompression algorithms that are considerably more conservative, such as Cressi or Mares RGBM.
Yes that is good to know, want to know real world implications. I’m ok with middle of the road, just don’t want to be the guy who has to go up first when diving with a group and then impede other people’s dive. I realize other factors apply, just don’t want my computer to be the cause of a shorter dive. I never noticed any issue with my very old Suunto.....