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Thread: DOS Calibration Problem

  1. #1
    Regular Vistor
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    DOS Calibration Problem

    I have a DOS that was operating on the classic system and recently upgraded to the new Apex. I started introducing all the modules one by one. I connected the "USB" cable to the DOS and primed both pumps from the display module. When I go to calibrate the pump - the pump spins and the volume in the graduated cylinder is 30 mls. The variation in the display module for set up only allows you to change the amount plus or minus 5 mls (35 to 45 mls). Suggestions?

    Mike

  2. #2
    Frequent Contributor zombie's Avatar
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    Enter 35 and then keep repeating the test until you get two tests in a row exactly 40 ml.

    Sent from my SM-G965U using Tapatalk

  3. #3
    Regular Vistor
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    Hey Zombie

    Thanks for the advice - I tried that and the pump changes it's rotation speed intermittently through the dose calibration - switching from a low rotational speed to a fast speed, then back again to a slow speed randomly. In several iterations of the calibration using the display module the volumes range from 30 to 50 mls without a discernible pattern. Is this typical? I'm thinking it would run at one speed throughout the calibration process....

    Mike

  4. #4
    Frequent Contributor zombie's Avatar
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    Set the DOS to manual OFF when you do a calibration. I have noticed that it sometimes reverts to scheduled doses during calibration if you don't turn it off first.

    Sent from my SM-G965U using Tapatalk

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