Shearwater Pursuit

Dinspiration · 26th June 2008, 09:13

As far as I know it is saltwater. If remember it correct the VR3 is also calibrated for saltwater. I did some tests with VR3, Shearwater and Hammerhead and max difference was less than 1 Meter.

Quote: (Originally Posted by Francisco)

Hello Is there anyone who knows if the Pursuit is calibrated on freshwater and saltwater?

The difference with the tec 2g on my computer is 3,2 m ( 10.5 ft) for 68m (222 ft)
= 4.7% is the difference

With the uwatec tec 2 g, you can choice fresh or salt water in the menu.

Francisco · 26th June 2008, 09:24

Hello,

I will put my tec 2 g of salt water on the next dive to compare

thank you for your answers

Dinspiration · 26th June 2008, 09:45

Hi,

I found an email on my system from Bruce about fresh- and saltwater. He mentioned, that the Pursuit is not doing a fresh water correction.

The difference between fresh and saltwater is around 3%. A computer calibrated in saltwater at 30 Meters will display a depth of 29 Meters in fresh water. Or a computer calibrated in freh water at 30 Meters will display 31 Meters in saltwater. If the computer is using the data from the pressure measurement for the decompression calculations the wrong displayed depths will have no impact. This information came from a Scubapro user manual.

Quote: (Originally Posted by Francisco)

Hello,

I will put my tec 2 g of salt water on the next dive to compare

thank you for your answers

cameron · 26th June 2008, 17:43

I figured thats what it was, but i thought that the shearwater was calibrated to fresh. I really think it makes more sense to be callibrated to fresh as you are playing the conservative side of things.

Cam

Hanssing · 26th June 2008, 19:56

Quote: (Originally Posted by cameron)

I figured thats what it was, but i thought that the shearwater was calibrated to fresh. I really think it makes more sense to be callibrated to fresh as you are playing the conservative side of things.

Cam

Ehh, all computers calculate in absolute pressures. The depth-calibration as such does not affect deco-calcs - only the displayed depth.

Nicolai

26th June 2008, 09:13	#51 (permalink)
Dinspiration Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Not Bought Yet Other CCR Join Date: Dec 2005 Location: Switzerland Posts: 213	Re: Shearwater Pursuit As far as I know it is saltwater. If remember it correct the VR3 is also calibrated for saltwater. I did some tests with VR3, Shearwater and Hammerhead and max difference was less than 1 Meter. Quote: (Originally Posted by Francisco) Hello Is there anyone who knows if the Pursuit is calibrated on freshwater and saltwater? The difference with the tec 2g on my computer is 3,2 m ( 10.5 ft) for 68m (222 ft) = 4.7% is the difference With the uwatec tec 2 g, you can choice fresh or salt water in the menu.
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26th June 2008, 09:24	#52 (permalink)
Francisco New Member Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Jan 2008 Location: Geneva Posts: 15	Re: Shearwater Pursuit Hello, I will put my tec 2 g of salt water on the next dive to compare thank you for your answers
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26th June 2008, 09:45	#53 (permalink)
Dinspiration Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Not Bought Yet Other CCR Join Date: Dec 2005 Location: Switzerland Posts: 213	Re: Shearwater Pursuit Hi, I found an email on my system from Bruce about fresh- and saltwater. He mentioned, that the Pursuit is not doing a fresh water correction. The difference between fresh and saltwater is around 3%. A computer calibrated in saltwater at 30 Meters will display a depth of 29 Meters in fresh water. Or a computer calibrated in freh water at 30 Meters will display 31 Meters in saltwater. If the computer is using the data from the pressure measurement for the decompression calculations the wrong displayed depths will have no impact. This information came from a Scubapro user manual. Quote: (Originally Posted by Francisco) Hello, I will put my tec 2 g of salt water on the next dive to compare thank you for your answers
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26th June 2008, 17:43	#54 (permalink)
cameron Classic Kiss 124 Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Apr 2005 Location: Toronto, Ontario, Canada Posts: 252	Re: Shearwater Pursuit I figured thats what it was, but i thought that the shearwater was calibrated to fresh. I really think it makes more sense to be callibrated to fresh as you are playing the conservative side of things. Cam __________________ Reclaim at work and CCR at home, life is good
(Online)

26th June 2008, 19:56	#55 (permalink)
Hanssing flap-flop ..... flap-flop Current Rebreather/s: rEvo Other Rebreather/s: rEvo Join Date: Nov 2005 Location: Denmark Posts: 407	Re: Shearwater Pursuit Quote: (Originally Posted by cameron) I figured thats what it was, but i thought that the shearwater was calibrated to fresh. I really think it makes more sense to be callibrated to fresh as you are playing the conservative side of things. Cam Ehh, all computers calculate in absolute pressures. The depth-calibration as such does not affect deco-calcs - only the displayed depth. Nicolai __________________ Woohooo - I can change my rEvo! Its going to be bitchin' tricked out piece of gear
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