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Thread: Uwatec Digital Ascent Rate?

 


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    Cold_Under_Here's Avatar
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    Uwatec Digital Ascent Rate?

    Got my shiney new Uwatec Digital Gauge today...very cool (y)
    I have a brief, simple and trivial question if you know it.

    What is the timer's programmed ascent rate (at %100)?

    I'm assuming it is 9m/min - 30ft/min. I just want to make sure as I'm diving it tomorrow.

    cheers!

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    Aquanaut4ata's Avatar
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    I'm not all that sure about Uwatec, so maybe I shouldn't even comment, but if it's a bar graph, most computers are 10'/min per bar....i.e. 3 bars=30'/min

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    MilitantMedic's Avatar
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    I have a Uwatec DG, it's great! Except for the ascent rate (IMO).

    1) Shows it as a percentage, of what??
    2) Major Lag time, about 3-5 seconds.
    3) Non-continuous display, shows the temp for 80% of the time, even while ascending.

    If you were to try and ascend using the "ascent rate percentage" you will go over, over what I have no idea. I.e. you will start ascending while watching your gauge and it will show you temp. A few seconds later it will flash your ascent rate %, hopefully less than 100%. It only shows the rate for maybe 1-2 seconds then back to temp. Maybe I'm missing a setting here or something.
    Stupidity Kills.

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    Quote Originally Posted by MilitantMedic
    I have a Uwatec DG, it's great! Except for the ascent rate (IMO).

    1) Shows it as a percentage, of what??
    2) Major Lag time, about 3-5 seconds.
    3) Non-continuous display, shows the temp for 80% of the time, even while ascending.

    If you were to try and ascend using the "ascent rate percentage" you will go over, over what I have no idea. I.e. you will start ascending while watching your gauge and it will show you temp. A few seconds later it will flash your ascent rate %, hopefully less than 100%. It only shows the rate for maybe 1-2 seconds then back to temp. Maybe I'm missing a setting here or something.
    Huh...I'll be aware of that! I'll just monitor my depth as I ascend...I hope your missing a setting!
    thanks :14:

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    Quote Originally Posted by MilitantMedic
    I have a Uwatec DG, it's great! Except for the ascent rate (IMO).

    1) Shows it as a percentage, of what??
    2) Major Lag time, about 3-5 seconds.
    3) Non-continuous display, shows the temp for 80% of the time, even while ascending.
    1) Percentage of Maximum... 100% being as fast as you should go.
    2) There is a slight lag, but I have seen this on other computers too... I have also noticed that if you go from horizontal to vertical, it may go off as well.
    3) It's probably non-continuous, because you stopped going up.

    The UWATEC's use a variable ascent rate, depending on depth. Between 23 and 67 ft. per minute.

    If you don't have a manual for your uwatec, you can download it from the scubapro website.
    -- Howard --
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    1) I was refering to their standard of what a 100% is
    2) All computers have a slight lag, this on is aggrevated by it flashing between temp and ascent.
    3) Nope, steady ascents...I've mostly resorted to watching bubbles for my ascent.

    I have the manual..doesn't mention it. Uwatec's/SP site doesn't have a download for it.
    Stupidity Kills.

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    ianr33's Avatar
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    It is a % of the allowable ascent rate that varies with depth. I asked the same question
    http://www.scubaboard.com/showthread...t=bottom+timer
    Never did find out what the actual allowed ascent rates are,assume it is the same as for other Uwatec computers.
    I never actually use the ascent rate,the samping time seems to be too long to make it useful

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    MilitantMedic's Avatar
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    Yeah that's the only downfall of the BTs. If they could show ascent rate constantly until ascent is complete, i.e. 60 sec cutoff and have a faster refresh rate it would be an awesome unit. Uwatec you listening?
    Stupidity Kills.

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    Ian,

    RE: you question of the arrow, yeah that indicates an "unallowable" ascent rate(greater than 30'/min), i.e. slow down! lol.
    Stupidity Kills.

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    Quote Originally Posted by MilitantMedic
    ...I've mostly resorted to watching bubbles for my ascent.
    Even relatively clear water has enough crud in it to be a pretty good reference. I find stationary crud easier to use than bubbles.

    Some DAN studies have shown that the instantaneous ascent rate is not as important as the overall time to ascend over a significant depth change. A good thing to do upon starting an ascent is to look at current runtime, then pick out the runtime that you want to be at when you leave other specific shallower depths, such 40'.
    Ref: The Speed of Ascent Dilemma: "instant speed of ascent" or "time to surface" -- which one really matters?

    Charlie Allen

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