Prism Topaz

[carlislere]

Has anyone dove Steam Machines Prism Topaz CCR? Comments about the unit, likes and dislikes.

 

[jptrealty]

I own and currently dive the prism topaz. After about five years of research I decided on the prism. I looked at every unit available, and felt that the prism was the best and safest to date. Money was NOT a consideration, cost is not an issue. The one flaw I find is that the PO2 can not be changed once it is set, unless it is done MANUALY. My unit is currently set with 2 OMS 45's, on 02 bail off reg, and an diluent bail off reg. OMS ss backplate, and a Halycon wing. A custom made SS enclosure was made for my rig by www.techdivetools.com. I have been to 170' on the rig and have had NO problems of any kind. I have NOT been on tri-mix on the rig yet but will by the summer of 2002.

Hope this helps.

JP

 

[carlislere]

Thanks, JP.

 

[padiscubapro]

Originally posted by jptrealty
I own and currently dive the prism topaz. After about five years of research I decided on the prism. I looked at every unit available, and felt that the prism was the best and safest to date. Money was NOT a consideration, cost is not an issue. The one flaw I find is that the PO2 can not be changed once it is set, unless it is done MANUALY. My unit is currently set with 2 OMS 45's, on 02 bail off reg, and an diluent bail off reg. OMS ss backplate, and a Halycon wing. A custom made SS enclosure was made for my rig by www.techdivetools.com. I have been to 170' on the rig and have had NO problems of any kind. I have NOT been on tri-mix on the rig yet but will by the summer of 2002.

Hope this helps.

JP

I don't agree with you on that, It is a nice unit but the controller has too many restrictions, the main being as you stated, no underwater PO2 control changes (other than the automatic low/high, high/low change)..

I currently dive (and teach) an INSPIRATION and its no less safe than the prism (better adustable PO2 control to boot-but its also missing a full manual mode (monitor only mode)) .

Not being able to change the Po2 setpoints underwater is a drawback when doing Deco, Sure you can fly it manually but I;'d rather just relax on my deco stops..

On my deco stops, I usually boost my PO2 to 1.5-1.55, this way the RB will add O2 and I don't have to control the loop volume.. Otherwise at 20ft You have to do a loop flush, refill with O2 then manuall keep adding O2, to maintain volume, then take an Air break on long decos which again I can now set the inspiration to .5 (flush with diluent) and take a break.

Safety all depends on training and attitude.. If you were looking for the most redundant and advanced RB anywhere you'd have purchased an Infinito 888 (this evolved from the ut-240), They sell for about 18.5k. I have one on order. triple redundant computers and controllers, backup power supplies and full time decompression of 4 inert gasses (nitrogen,helium, Neon, Argon), its been tested to depths over 250 meters.

 

[jptrealty]

HI:

Thanks for your imput, I agree with what you said, How do I get this rebreather that evolved from the UT-240?? I was under the impression that the UT240 didn't exits.

Thanks for your help.

 

[DrySuitDave]

JTS,

To read a little about Underseas Technologie's UT 240, click here

To see the Infinito 444, click here.

I will try to find some more info on the 888 model