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Calibration of Hygrometer

MorganGeoMorganGeo Everyone, Registered Users Posts: 1,606
How come when you buy one they don't come pre-calibrated? Just a thought I had.....

Comments

  • rsherman24rsherman24 Everyone, Registered Users Posts: 2,711
    Don't know if they ever have, but now they are "Auto-Calibrating" or so they say. This is why every one I own has a little white sticker on it saying +4 or -2 after I check the calibration.
  • ckrddsmkeckrddsmke Everyone, Registered Users Posts: 392
    I bought some at Wal-Mart and every one of them was spot on. Put them in a sealed bag with a 75% Boveda and 12 hours later each and everyone read 75%. Downside they are a little big for a desktop but great for cabinets. Around $9.
  • Lee.mcglynnLee.mcglynn Everyone, Registered Users Posts: 5,228
    Xikar now does it and it's pretty dang accurate!
  • RainRain Everyone, Registered Users Posts: 8,761
    MorganGeo:
    How come when you buy one they don't come pre-calibrated? Just a thought I had.....
    They used to. I bought one and it was 2 off. I just don't get the point of taking the button off...maybe they save 1/4 cent on each one or something.
  • Beaker38Beaker38 Everyone, Registered Users Posts: 184
    I bought one about a week ago and it was pre-calibrated but only one off.
  • New BootsNew Boots Everyone, Registered Users Posts: 2,634
    If they were all calibrated, and stayed that way....they would not have a need to sell calibration kits! Sorry, but it's the truth. It's pretty old and simple technology to not have perfected by now. Do the outdoor, wireless kits need calibrated? Nope, and they measure a lot more than rH and temp. Chew on that for just a minute.
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