How come two Rangemen shows different baro graph readings?
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    How come two Rangemen shows different baro graph readings?

    I own two Rangemen - GW9400CMJ-3 (Camo) and GW9400-3 (olive negative) .
    The Baro readings/line on the baro graph of the Camo Rangeman always starts 1 hPa higher than the Olive's baro graph. It also looks more "noirotic", meaning it looks like it's more sensitive than than the Olive's, so it changes +/-1 hPa more frequently.
    The Baro value on he Camo is always 1 hPa higher than the Olive's - e.g. 1015 hPa vs 1014 hPa, respectively.
    I've reset them both by pressing the "Adjust + Mode + Forward" combination, and then set them both with the same coordinates.
    Question is does the Camo has a fault baro sensor?
    Please see pictures below:

    Name:  Baro graph-2.jpg
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    Rangeman GW9400CMJ-3 (Camo), Rangeman GW9400-3 (olive negative), GDX6900CM-5, G-Shock Xtreme DW-9500 transparent Blue (1998 model)

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    Member Everdying's Avatar
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    Re: How come two Rangemen shows different baro graph readings?

    it's anyones guess how casio calibrates them.
    i've seen 3 diff protreks of the same model that give readings which are 1-2hpa apart from each other.
    the main point tho is that casio wants u to use it for its differential and not for absolute value.
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    Re: How come two Rangemen shows different baro graph readings?

    Really ? so it's pretty annoying, because you'd expect the sensor to follow some calibration standards, thus displaying the exact readings in all manufactured watches, when taken in the same conditions.
    Rangeman GW9400CMJ-3 (Camo), Rangeman GW9400-3 (olive negative), GDX6900CM-5, G-Shock Xtreme DW-9500 transparent Blue (1998 model)

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    Re: How come two Rangemen shows different baro graph readings?

    Now they're both show the same hPa of 1015, and temp of ~26.0 celsius, and still - the Camo's graph is just way higher the the Olive's:

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    Rangeman GW9400CMJ-3 (Camo), Rangeman GW9400-3 (olive negative), GDX6900CM-5, G-Shock Xtreme DW-9500 transparent Blue (1998 model)

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    Re: How come two Rangemen shows different baro graph readings?

    Correction - "than the Olive's".
    I can't edit my posts yet (why the hell not..?)
    Rangeman GW9400CMJ-3 (Camo), Rangeman GW9400-3 (olive negative), GDX6900CM-5, G-Shock Xtreme DW-9500 transparent Blue (1998 model)

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    when both barometer readings are the same, try checking the altitude... they may both give diff readings...

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    Re: How come two Rangemen shows different baro graph readings?

    Quote Originally Posted by Coresh View Post
    Really ? so it's pretty annoying, because you'd expect the sensor to follow some calibration standards, thus displaying the exact readings in all manufactured watches, when taken in the same conditions.
    In the Rangeman manual, Casio rates the pressure sensor precision as follows:

    Measurement accuracy: Within ±3 hPa (0.1 inHg)

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    Re: How come two Rangemen shows different baro graph readings?

    Olive = -54M
    Camo = -57M
    Rangeman GW9400CMJ-3 (Camo), Rangeman GW9400-3 (olive negative), GDX6900CM-5, G-Shock Xtreme DW-9500 transparent Blue (1998 model)

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    Re: How come two Rangemen shows different baro graph readings?

    I think they're both within Casio's specifications and what you're seeing is just a function of the v.3 sensor's high resolution. A couple hPa is a pretty small pressure difference, far smaller than say the difference in pressure around your nose and mouth on inhalation and exhalation. I have owned many v.2 and v.3 G-Shocks and ProTreks and actually find the v.2 sensors to be slightly *more* accurate, especially over time, than the v.3 sensors. Much is made by Casio about the finer resolution of the v.3 sensor (5' elevation increments as opposed to 20' with the v.2 for instance), but there is a big difference between *accuracy* and *precision*. Since the v.3 sensors are more sensitive to very slight fluctuations, they are also more susceptible to "drift" and have to be calibrated more often, at least in my experience, than the v.2 sensors they replaced.

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    Re: How come two Rangemen shows different baro graph readings?

    Well, ok, but we're talking about two Rangemen that uses the same v.3 sensors, and still one's baro graph is of that charts second time in 48 hours, while the other is more consistent, with more moderate changes -both in same conditions.
    Note that the "problem" is just with the baro graph of the Camo - it seems to be out of sync..
    Rangeman GW9400CMJ-3 (Camo), Rangeman GW9400-3 (olive negative), GDX6900CM-5, G-Shock Xtreme DW-9500 transparent Blue (1998 model)

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