Question about the PRG 240(and Casio ABCs in general)
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  1. #1
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    Question about the PRG 240(and Casio ABCs in general)

    Hi,
    I was wondering whether the PRG240 has altitude compensation for the barometric weather forecast.
    i.e. if you increase your altitude in a short period of time, will it recognize it as a rapid change in altitude and not due to weather changes?

    For example, let's say your altitude changes by 1000m in an hour. Will the watch identify the rapid air pressure change as an altitude change or as a change in weather?

    Thanks in advance.

  2. #2
    Member cal..45's Avatar
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    Re: Question about the PRG 240(and Casio ABCs in general)

    1000meters are equal to aprox. 100hpa, if the barometer would rise or drop that dramatically, without changing altitude - we would be in the deepest of all deep sh*t

    Casio watches can't distinguish between weather drifts and physical movement. Any barometer drift will automatically calculate a new altitude, hope that answers your question.


    cheers
    We are 12.6 %

  3. #3
    Member Queen6's Avatar
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    Re: Question about the PRG 240(and Casio ABCs in general)

    No the sensor looks to be thermally compensated, however is unable to differentiate between altitude change or air pressure shift. Casio ABC`s do not work in the typical fashion of others with the watch displaying absolute/relative air pressure and not the more common mean sea level. Other ABC`s force you to lock profiles (alti or baro) and some have an element of intelligent automation like the Suunto Core. Casio allows both, this does reduce complication of use and equally forces the user to calibrate more frequently.

    Good to bad altimeter drift from my own observations

    Suunto Core (benchmark for alti & baro functions & accuracy)
    Timex WS4
    Highgear Altis
    PRG-240 & PRW-5000T
    PRG-110 & PRG-130 (later models)
    PRG-80
    PRG-40
    PRG-110, PRW-1300, PRG-130 & PRW-1500 (early models baro will drift more, exaggerating alti drift)

    Early PRG/PAG-110/130 & PRW/PAW-1300/1500 are best avoided as they appear to suffer both altimeter drift and are not so thermally stable resulting in big shifts of the altimeter rendering them virtually useless. later versions are improved and look to be more stable, PRG/PAG-200, PRG/PAG-240, PRG-500 & PRW/PAW-5000 are thermally compensated and offer greater stability, best bet is to wear Protrek`s this way temperature is in general stable, reducing drift. No Casio ABC to date offers any form of anti drift technology (altimeter) they do offer other atributes...

    Q-6

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  5. #4
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    Re: Question about the PRG 240(and Casio ABCs in general)

    I have a question too. It is any diferences between 240T and 240B. I am refering at the material from who is made of the watch, not the bracelet/strap or the color.
    Cheers
    Last edited by graurul94; February 9th, 2011 at 08:40.

  6. #5
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    Re: Question about the PRG 240(and Casio ABCs in general)

    Quote Originally Posted by Queen6 View Post
    ...
    Early PRG/PAG-110/130 & PRW/PAW-1300/1500 are best avoided as they appear to suffer both altimeter drift and are not so thermally stable resulting in big shifts of the altimeter rendering them virtually useless. later versions are improved and look to be more stable..

    Q-6
    Silly question - Am i correct in assuming the "later" versions include the "B" modules?

  7. #6
    Member Queen6's Avatar
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    Re: Question about the PRG 240(and Casio ABCs in general)

    Quote Originally Posted by Divine_Madcat View Post
    Silly question - Am i correct in assuming the "later" versions include the "B" modules?
    Yes the "B" modules are the later versions, and they do appear to be more accurate

    Q-6

  8. #7
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    Re: Question about the PRG 240(and Casio ABCs in general)

    Can anyone answer to my question too ? It is any diferences between 240T and 240B. I am refering at the material from who is made of the watch, not the bracelet/strap or the color.

    The Ti bracelet it's adjustable?

  9. #8
    Member Queen6's Avatar
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    Re: Question about the PRG 240(and Casio ABCs in general)

    Quote Originally Posted by graurul94 View Post
    Can anyone answer to my question too ? It is any diferences between 240T and 240B. I am refering at the material from who is made of the watch, not the bracelet/strap or the color.

    The Ti bracelet it's adjustable?
    Material is the same for all, only the colour differs

    Q-6

  10. #9
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    Re: Question about the PRG 240(and Casio ABCs in general)

    Quote Originally Posted by Queen6 View Post
    Yes the "B" modules are the later versions, and they do appear to be more accurate

    Q-6
    As always Q-6, thank you. :)

  11. #10
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    Re: Question about the PRG 240(and Casio ABCs in general)

    I bought 240T today and within 3 hours of wearing it i saw that E,S,W letters on the bezel the paint had come off little bit on each letter...
    I am returning this watch tomorrow...
    I am confused shell i get a replacement or different watch..
    am afraid that same might happen to the replacement watch..
    Have any one faced this problem...
    Pls reply asap
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