VR3 question.

Mikel-Deko · 23rd December 2005, 09:59

Hi
My VR3 shows -100 mtrs in the sea level.
Also shows 950mBar when shoud show 1032mBar.
Does someone know how to fit them corretly?
Can this affect to the computers work? Deco? depth?
Thanks
Mikel-Deko

Merry Xmas

Dan · 23rd December 2005, 15:55

Just -100, mine fluctuates between -190 and -290!
I asked Delta P the same and they did an "update" on theirs FAQ:
"The pressure sensor is very sensitive. The absolute pressure accuracy is +/- 30Mb; the gain is 1% to 2%. This means that underwater, where 10m (33 ft) of depth exerts a pressure of 1 bar, the pressure reading is very accurate in depth terms, it also means that on the surface, where the whole height of the atmosphere exerts a pressure of 1 Bar, altitude readings can vary between VR computers as much as several hundred metres, (the equivalent of +/- 30 Mb). Your VR is not a barometer.
As the entire atmosphere exerts the same pressure as 10 metres of water, a difference in pressure equivalent to a depth change of several cms underwater is equivalent to a change of several 100 metres of altitude."

In other word - it is all right!

//Dan

***jradomski*** · 25th December 2005, 21:47

Quote: (Originally Posted by Mikel-Deko)

Hi
My VR3 shows -100 mtrs in the sea level.
Also shows 950mBar when shoud show 1032mBar.
Does someone know how to fit them corretly?
Can this affect to the computers work? Deco? depth?
Thanks
Mikel-Deko

Merry Xmas

Thats a bit much..

First it will effect your deco.. it will treat it as an altitude dive and give you longer deco..

When you say 1032mb was that from a known calibrated source.. the nominal pressure at sea level is 1013mb (the average gets a little lower as you go towards the poles, and higher as you go towards the equator)

It is possible that you have a small gas bubble or debris in the silicon gel covering the pressure transducer.. I had the same problem a few times.. taking the unit apart and carefully cleaning/adding gel solved the problem..

Also if the software is implemented properly, the accuracy of the sensor is MAX +20 mbar (meaning it should always be slightly high) not low

Nick uk. · 25th December 2005, 23:29

1032mbr!!

isn't this ambient preasure?

950mbr, was it a cloudy dull day?

23rd December 2005, 09:59	#1 (permalink)
Mikel-Deko RBW Member Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Other CCR Join Date: Jul 2005 Location: Basque Country -Sp- Posts: 476	VR3 question. Hi My VR3 shows -100 mtrs in the sea level. Also shows 950mBar when shoud show 1032mBar. Does someone know how to fit them corretly? Can this affect to the computers work? Deco? depth? Thanks Mikel-Deko Merry Xmas
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23rd December 2005, 15:55	#2 (permalink)
Dan New Member Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: May 2005 Location: SWEDEN Posts: 71	Re: VR3 question. Just -100, mine fluctuates between -190 and -290! I asked Delta P the same and they did an "update" on theirs FAQ: "The pressure sensor is very sensitive. The absolute pressure accuracy is +/- 30Mb; the gain is 1% to 2%. This means that underwater, where 10m (33 ft) of depth exerts a pressure of 1 bar, the pressure reading is very accurate in depth terms, it also means that on the surface, where the whole height of the atmosphere exerts a pressure of 1 Bar, altitude readings can vary between VR computers as much as several hundred metres, (the equivalent of +/- 30 Mb). Your VR is not a barometer. As the entire atmosphere exerts the same pressure as 10 metres of water, a difference in pressure equivalent to a depth change of several cms underwater is equivalent to a change of several 100 metres of altitude." In other word - it is all right! //Dan
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25th December 2005, 21:47	#3 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,113	Re: VR3 question. Quote: (Originally Posted by Mikel-Deko) Hi My VR3 shows -100 mtrs in the sea level. Also shows 950mBar when shoud show 1032mBar. Does someone know how to fit them corretly? Can this affect to the computers work? Deco? depth? Thanks Mikel-Deko Merry Xmas Thats a bit much.. First it will effect your deco.. it will treat it as an altitude dive and give you longer deco.. When you say 1032mb was that from a known calibrated source.. the nominal pressure at sea level is 1013mb (the average gets a little lower as you go towards the poles, and higher as you go towards the equator) It is possible that you have a small gas bubble or debris in the silicon gel covering the pressure transducer.. I had the same problem a few times.. taking the unit apart and carefully cleaning/adding gel solved the problem.. Also if the software is implemented properly, the accuracy of the sensor is MAX +20 mbar (meaning it should always be slightly high) not low __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated. Last edited by jradomski : 25th December 2005 at 23:43. Reason: spelling
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25th December 2005, 23:29	#4 (permalink)
Nick uk. Made in England. Current Rebreather/s: Inspiration Classic Azimuth Other Rebreather/s: Azimuth Join Date: Nov 2005 Location: Viale C.Colombo 75 Marina di Carrara. MS 54036 Italy Posts: 575	Re: VR3 question. 1032mbr!! isn't this ambient preasure? 950mbr, was it a cloudy dull day? __________________ If it aint broke....don't fix it, and if it is.............well......get another one! divechief2000@hotmail.com
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