Riseman accuracy

Thread: Riseman accuracy

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  1. #1
    Member deltaforce316's Avatar
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    Riseman accuracy

    So I just got myself a Riseman (flying squirel), I’m a little disapointed with the accuracy from the sensor however and I’m just wondering if they’re generally not as accurate as protreks or whatever.

    For instance I know my elevation at home is more or less 160ft, I walk my dog the same place every day and my old PRT-30 increases 60ft to 220ft which I know is right from gps. With the Riseman I set the reference altitude to 50m and at the same point where the PRT-30 always reads 220 ft the Riseman says 80/85m, so between 38/53ft off.

    Also the PRT-30’s barometer has never been adjusted and is never off by more than 1mb either way. I adjusted the Riseman to read the same as the PRT-30 and yet still it can be out of line either way by up to 3mb.

    Help me experts.

  2. #2
    Member WES51's Avatar
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    Re: Riseman accuracy

    Is this a new watch or used?

  3. #3
    Member deltaforce316's Avatar
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    Re: Riseman accuracy

    It’s used, I picked up in a shop just outside Kyoto for just under 7000 yen.

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  5. #4
    Member WES51's Avatar
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    Re: Riseman accuracy

    I have a small discrepancy issue with my ProTrek due to temperature changes. Off the wrist the watch would read a slightly different elevation (about 3m) than worn.

    Assuming your sensor might need replacement, you might check out these two threads:
    https://forums.watchuseek.com/showthread.php?t=3538642

    https://forums.watchuseek.com/showthread.php?t=4350786

  6. #5
    Member Epal2Apol's Avatar
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    Re: Riseman accuracy

    Quote Originally Posted by WES51 View Post
    I have a small discrepancy issue with my ProTrek due to temperature changes. Off the wrist the watch would read a slightly different elevation (about 3m) than worn.
    I think that is just normal since your body heat adds up with the atmospheric pressure thereby altering the computed elevation.

  7. #6
    Member WES51's Avatar
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    Re: Riseman accuracy

    Quote Originally Posted by Epal2Apol View Post
    I think that is just normal since your body heat adds up with the atmospheric pressure thereby altering the computed elevation.
    The atmospheric pressure around the sensor (even in close proximity) does remain constant regardless of the body temperature. Because in the open, there is no place for any pressure to build up. So it would have to be a change in sensitivity of the sensor itself for some other reason.

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