Model 01533 Rain gage setup

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i have model number 01533, my son in law went to change batteries on the outdoor unit and saw the 2 screws under the unit, they looked loose so he ran them in. Is there a starting point on the rain gage adjustment?
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Posted 10 months ago

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AcuRite Tori

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Hello skinnykenny,

You would want to screw the calibration screws all the way in and then unscrew them 5 1/4 full turns. From here you will have to perform the drip test. To do so please follow the instructions below. Thank you.

Items Needed: 5-in-1 sensor, display unit, plastic cup, pin, screw driver

  1. First, make sure the 5-in-1 sensor is perfectly level using the built-in bubble level.
  2. Place the display unit close by so you can monitor it during the calibration process.
  3. Make a pin hole in the bottom of a plastic cup. Hold the cup over the rain gauge and fill it with exactly 1 cup (8 oz.) of water, allowing the water to drip into the rain gauge. You should hear the internal buckets tip and see the water drain through the rain gauge.
  4. A few seconds after each bucket tip, the display console will display rainfall in approximately 0.01" or more increments.
  5. The cup of water should take more than 20 minutes to empty; a quicker period will result in an inaccurate calibration. (We’re trying to simulate a normal steady rainfall.) When the cup is completely empty of water, the display console should register 1.06"
If the rain gauge doesn't register close to 1.06" after the cup is empty of water, then you should make an equal adjustment to the two calibration screws on the bottom of the 5-in-1 sensor. Be sure to adjust both screws the same amount. Turning screws clockwise will increase rainfall amount. Turning screw counter clockwise will decrease it.

To adjust the rainfall reading by 2% turn both screws 1/8  of a turn.
To adjust the rainfall reading by 4% turn both screws 1/4 of a turn.
To adjust the rainfall reading by 8% turn both screws 1/2 of a turn.
  • There should be nearly an equal number of water drops between bucket tips. If not, then adjust the calibration screws on the bottom of the 5-in-1 sensor until an equal number of water drops are tipping the buckets. Then, restart the calibration procedure.
  • If you don't hear the buckets tipping and see water dripping alternately out of each drain, there may be an issue with the rain gauge or it's adjustment.