Looks like Dive Right in Scuba is calling the Peregrine TX the PTX. Shearwater doesn’t so my response is correct. All you need to know is easily found at the true source of info on Shearwater dive computers at the link below:
Dive Computers
New Shearwater Dive Computer - 2024!
- Thread starter Dive Right In Scuba
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Dive Computers
CT-Rich
Contributor
argross91
Registered
I don’t know - I own a Perdix 2 and a Teric. Check the info at the Shearwater link I provided - that should tell you everything you need to know.
GreggS
Contributor
I was able to try the Peregrine TX during the SB Invasion in Bonaire last month. I fell in love with it and ordered 2 of them before I left Bonaire, one for me and one for my wife. I didn't tell my wife I had ordered one for her until they came in. She was both surprised and a little upset that I did. We were able to use them this past weekend on a couple of quarry dives near home and I am still loving this computer. And to be honest, this is the computer I'd been waiting for ever since Shearwater first introduced the Peregrine. When I asked my wife how she liked hers, she replied that she just didn't know she wanted one until she dove with it.
I did good.
I did good.
I didn't think I needed AI, but bought the Peregrine TX and I am so happy with it.
For shallow water dives where the plan is basically, "surface when you are done and climb out" keeping the air, time, nitrogen loading, and compass all in one screen is wonderful. It definitely reduces the task loading for a newish diver like me to have it all together and also the digital readout of the air is a lot easier for my brain to wrap around quickly than a gauge full of numbers and a needle.
I'm sure for deeper dives where the limiting factor is nitrogen loading, not air, and/or just a very specific "turn around and follow the same route back at this tank pressure" it is probably less important.
It also gives me feedback on my SAC and estimated gas time remaining which are very helpful as I can see when I'm using more or less air as I dive and correlate that to my physical and mental activity. It has become very obvious that being stressed causes me to use more air, which is intuitive, but seeing it in clear digits helps me realize when it is (or has due to the computer logging) happening.
The gas time remaining is also a good reality check on the tank pressure number, helping me be more conservative with my remaining air if the computer says my remaining time is lower than I anticipated at a given point.
Again, though, the most important thing is that clear digital number for tank pressure right next to every other piece of data I need, like my depth. It reduces my mental load significantly.
I'm convinced the AI keeps me safer.
FWIW, I still keep an analog gauge. Mostly because I'm a bit obsessive about using it as part of my tank opening and closing procedure. I like to see and feel the pressure come up in real time and see it go out when I'm done. I don't personally want to screw with a computer while I'm setting up or tearing down my equipment.
It also feels like an excellent backup on multiple levels. Sure, the computer could crap out, but that isn't likely. What is more likely is I forget to charge the computer, or literally just forget to bring it. With the SPG attached to my regulator, such a circumstance would merely be an inconvenience for most dives I do. I could just go computer-less and do it the "old fashioned" way.
Same for if I somehow lost the computer on a dive or on a trip. Again, the SPG is all I really need for a lot of dives, especially guided dives at limited depths.
I also compare the SPG to my computer once in a while, since I was used to checking the SPG, which seems like a good habit to maintain.
My one suggestion if you are a newish diver without a lot of experience using a/this computer is to find a pool that you can dive in and take the computer there for like a full hour. Just screw with it. Do everything. There is a lot there and while trying to stick with your buddies is not the time to be trying to remember how the menu buttons work to find that one bit of information you need now.
Also, some default settings are just terrible, and you want to find this out in a pool, because often you can only change these settings when not in dive mode (at the surface).
i.e.:
You must pair your AI transmitter to your computer by entering numbers, this takes time.
Gas Time Remaining is not on by default.
Screen Brightness is in Low not Auto by default.
You can't fix these things while out in the middle of a lake, and probably shouldn't anyway, but you can just fiddle with it for an hour in the pool and surface repeatedly as needed.
You can also customize the "home screen", which is best done and tested in a pool.
Even try out the compass just to navigate back and forth across the pool. It works very well, but some things are not obvious about the display until you try it. It takes a little getting used to the periodic updates rather than the live movement of an analog compass, but once you get used to it I feel that it works well and keeps me focused in one place.
For shallow water dives where the plan is basically, "surface when you are done and climb out" keeping the air, time, nitrogen loading, and compass all in one screen is wonderful. It definitely reduces the task loading for a newish diver like me to have it all together and also the digital readout of the air is a lot easier for my brain to wrap around quickly than a gauge full of numbers and a needle.
I'm sure for deeper dives where the limiting factor is nitrogen loading, not air, and/or just a very specific "turn around and follow the same route back at this tank pressure" it is probably less important.
It also gives me feedback on my SAC and estimated gas time remaining which are very helpful as I can see when I'm using more or less air as I dive and correlate that to my physical and mental activity. It has become very obvious that being stressed causes me to use more air, which is intuitive, but seeing it in clear digits helps me realize when it is (or has due to the computer logging) happening.
The gas time remaining is also a good reality check on the tank pressure number, helping me be more conservative with my remaining air if the computer says my remaining time is lower than I anticipated at a given point.
Again, though, the most important thing is that clear digital number for tank pressure right next to every other piece of data I need, like my depth. It reduces my mental load significantly.
I'm convinced the AI keeps me safer.
FWIW, I still keep an analog gauge. Mostly because I'm a bit obsessive about using it as part of my tank opening and closing procedure. I like to see and feel the pressure come up in real time and see it go out when I'm done. I don't personally want to screw with a computer while I'm setting up or tearing down my equipment.
It also feels like an excellent backup on multiple levels. Sure, the computer could crap out, but that isn't likely. What is more likely is I forget to charge the computer, or literally just forget to bring it. With the SPG attached to my regulator, such a circumstance would merely be an inconvenience for most dives I do. I could just go computer-less and do it the "old fashioned" way.
Same for if I somehow lost the computer on a dive or on a trip. Again, the SPG is all I really need for a lot of dives, especially guided dives at limited depths.
I also compare the SPG to my computer once in a while, since I was used to checking the SPG, which seems like a good habit to maintain.
My one suggestion if you are a newish diver without a lot of experience using a/this computer is to find a pool that you can dive in and take the computer there for like a full hour. Just screw with it. Do everything. There is a lot there and while trying to stick with your buddies is not the time to be trying to remember how the menu buttons work to find that one bit of information you need now.
Also, some default settings are just terrible, and you want to find this out in a pool, because often you can only change these settings when not in dive mode (at the surface).
i.e.:
You must pair your AI transmitter to your computer by entering numbers, this takes time.
Gas Time Remaining is not on by default.
Screen Brightness is in Low not Auto by default.
You can't fix these things while out in the middle of a lake, and probably shouldn't anyway, but you can just fiddle with it for an hour in the pool and surface repeatedly as needed.
You can also customize the "home screen", which is best done and tested in a pool.
Even try out the compass just to navigate back and forth across the pool. It works very well, but some things are not obvious about the display until you try it. It takes a little getting used to the periodic updates rather than the live movement of an analog compass, but once you get used to it I feel that it works well and keeps me focused in one place.
OMyMyOHellYes
Contributor
Nope. The Teric/Tern platforms use 4 buttons for inputs.
To me that is a bug, not a feature.
So I stick to the Perdii/Peregrine/NERD with their two buttons. less complexity.
Went to dive with my new Peregrine TX & AI yesterday after upgrading from the non-AI version.
Minus 1/2 star - 4.5/5.
Unlike the previous Peregrine, they now include a standard length strap which just barely fit to the first clasp hole around my drysuit wrist. I didn't realize the default, included strap length had changed and so wasn't prepared for the discovery when getting suited up. It won't fit with a thicker underlayer I use in the colder seasons/water dives. Shearwater lists a long strap kit for the Peregrine at $25, but it is pretty much $45 across the board on dive websites. Resorting to using the bungee config instead, but not really happy about it.
Very nice to have the AI and all the bells & whistles (current/start/end pressures, sac, gtr, etc) readily available and logged. Removed my previous SPG/Depth/Compass console and installed the Swift transmitter on a short (6") HP hose because my compact 1st stage didn't have enough room between ports for the tx body along with a drysuit inflator hose. Nice not having that clunky dive console and long hose - feels kind of strange missing it when getting ready, but the AI usage is incredibly simple.
Electronic compass seems ok. Used it for an entire dive in lower viz 10-15ft conditions. I'll probably stick with a separate wrist compass though, so it won't be necessary to scroll the computer from compass to AI info so much during the dive.
Overall, happy with the TX version, barring the standard strap fit issue. A wrist computer is pretty much useless if you can't fit it on your wrist. Yeah yeah, bungee... I just don't prefer that. I see no great reason Shearwater had to skimp on that one thing with this release.
Minus 1/2 star - 4.5/5.
Unlike the previous Peregrine, they now include a standard length strap which just barely fit to the first clasp hole around my drysuit wrist. I didn't realize the default, included strap length had changed and so wasn't prepared for the discovery when getting suited up. It won't fit with a thicker underlayer I use in the colder seasons/water dives. Shearwater lists a long strap kit for the Peregrine at $25, but it is pretty much $45 across the board on dive websites. Resorting to using the bungee config instead, but not really happy about it.
Very nice to have the AI and all the bells & whistles (current/start/end pressures, sac, gtr, etc) readily available and logged. Removed my previous SPG/Depth/Compass console and installed the Swift transmitter on a short (6") HP hose because my compact 1st stage didn't have enough room between ports for the tx body along with a drysuit inflator hose. Nice not having that clunky dive console and long hose - feels kind of strange missing it when getting ready, but the AI usage is incredibly simple.
Electronic compass seems ok. Used it for an entire dive in lower viz 10-15ft conditions. I'll probably stick with a separate wrist compass though, so it won't be necessary to scroll the computer from compass to AI info so much during the dive.
Overall, happy with the TX version, barring the standard strap fit issue. A wrist computer is pretty much useless if you can't fit it on your wrist. Yeah yeah, bungee... I just don't prefer that. I see no great reason Shearwater had to skimp on that one thing with this release.
GreggS
Contributor
Yes. It comes with a bungee that is threaded thru the holes where the strap attaches.
Learner Diver
Banned
Are the Shearwater dive computers prone to flooding? (Perdix and the other look alike).
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