rain gauge problem

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have a  model 01602 and did calibration but rain gauge will accumulate rain when it is not raining was showing 1.5 inches of rain for day and has not rained n several days but when I did calibration it was accurate
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jerry

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Posted 2 years ago

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Harold Ashe, Champion

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If you moved the sensor around or jostled it during the calibration, you might have caused the internal "buckets" to tip back and forth and record phantom rain.  You might want to clear your display and set it back to zero.

Why did you want to calibrate the sensor in the first place?  They are usually pretty accurate right out of the box and it is very difficult to "calibrate" once you start moving those screws on the bottom.

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jerry

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didn't move it to calibrate did it on the post,I calibrated it because it said we had about 18 inches of rain when was really only around 1.5 inches for the day,it is saying we have 82.86inches of rain since I put it up n january
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AcuRite Crystal

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Hi Jerry,

Make sure that your sensor is mounted sturdy.  Depending on how high you have it in the air and how sturdy the mount is, wind could be causing the erroneous rain fall.  If the wind is rocking the sensor, that will rock the tipping cups which could be why you are seeing the extra rain.  If this is not the problem, please call us at 877-221-1252.  Have a great day!
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Mike Nelson

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I don't know if this applies in your situation but here goes. Do your phantom rain accumulations occur when it has been really windy?

I have had a similar system for over a year and the rain gauge has worked flawlessly the whole time. Just a month ago we had a "dry" storm pass through our Arizona desert location, no clouds, no rain, but horrible gusting and variable winds of 25 to 35 mph whipping about from varying directions. I watched my system record over 8" of "rain" in 2 hours, but not a drop was falling outside my home office window.

I was going to submit this to Support myself but to me it seems the 5-in-1 sensor may have a design flaw where certain kinds of severe winds can buffet the rain collector opening and flip the internal buckets back and forth? My 5-in-1 sensor head is well anchored on a 3/4" galvanized iron pipe secured to a sturdy tripod mount bolted to the roof, so the entire sensor head couldn't have been shaking during the storm.
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AcuRite Crystal

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Hi Mike,

Even with your setup, there is still a possibility of the sensor rocking slightly during high winds.  The higher your sensor is, the more chance of it rocking.  How high in the air is your sensor?
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Mike Nelson

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The pole is about 4' tall from the mounting brackets to the 5-in-1 sensor. I went up and checked it and could maybe get 1/4" of movement by pulling and pushing the pole by hand. Is that enough to trigger the buckets inside? 
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AcuRite Crystal

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Hi Mike,

Any amount of movement could cause erroneous rainfall.  Mounting the sensor as sturdy as possible will help to avoid that happening.  If you have any additional questions, please contact AcuRite customer support at 877-221-1252.  Have a great day!

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