background image

11

Calibration
Calibrate the Rain Gauge

The rain gauge can be calibrated to improve accuracy.

Items Needed:

 rain gauge, display, plastic cup, pin, screw driver

1.  First, place the rain gauge on a level surface.
2.  Place the display close by so you can monitor it during calibration.
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 

slowly drip into the rain gauge. You should hear the internal cups tipping 

and see the water drain through the rain gauge.

4.   A few seconds after each cup tip, the display will display rainfall in  

approximately 0.01” (0.2 mm) 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. Try to simulate a normal 

steady rainfall. When the cup is empty of water, the display  

should register 1.68” (42.67 mm).

Tips

 •  There should be nearly an equal number of water drops between cup tips. 

If not, then adjust the calibration screws beneath the tipping lever until  

an equal number of water drops are tipping the cups. Then, restart the 

calibration procedure.

 •  If you don’t hear the cups tipping and see water dripping alternately out of 

each drain, there may be an issue with the rain gauge or it’s adjustment.

Adjustment

If the rain gauge doesn’t register close to 

1.68” (42.67 mm) after the cup is empty, 

make an EQUAL adjustment to the two  

calibration screws, located beneath the  

tipping cups. Turn screws counter-clockwise  

to increase rainfall; turn screw clockwise to 

decrease rainfall.
 •  To adjust the rainfall reading by 2%  

turn both screws 1/4 of a turn.

 •  To adjust the rainfall reading by 4%  

turn both screws 1/2 of a turn.

 •  To adjust the rainfall reading by 8%  

turn both screws 1 full turn.

2 CALIBRATION SCREWS

COLLECTING CUP

Increase 

Rainfall

Decrease 

Rainfall

Increase 

Rainfall

Decrease 

Rainfall

Summary of Contents for 02446

Page 1: ... 5 Display Setup 6 Set Time Date Units 7 Placement Guidelines 7 Rain Gauge Installation 8 Using the Rain Gauge 9 Programmable Rain Alarm 9 Troubleshooting 10 Calibration 11 Care Maintenance 12 Specifications 12 FCC Information 12 Customer Support 13 Warranty 13 Instruction Manual Rain Gauge model 02446 Questions Contact Customer Support at www AcuRite com support or email support chaney inst com ...

Page 2: ...move the protective film that is applied to the LCD screen prior to using this product Locate the tab and peel off to remove Remove packing materials from inside of the rain gauge Package Contents 1 Display 2 Rain Gauge 3 Instruction Manual PRODUCT REGISTRATION Register online to receive 1 year warranty protection www AcuRite com PRODUCT MUST BE REGISTERED TO RECEIVE WARRANTY SERVICE IMPORTANT ...

Page 3: ...g Cups Collects and empties rain for continuous rain measurement 3 Battery Compartment Electronics Box 4 Rain Gauge Base 5 A B C Switch ID code that must match display s A B C switch to ensure units synchronize Features Benefits A B C SQUEEZE 4 5 1 2 3 ...

Page 4: ...Rainfall Total For time range indicated above 8 Rain Gauge Signal Strength 9 Month To Date Rainfall Total 10 Rain Gauge Low Battery Indicator 11 Icon Indicates a rain alert has been set 12 Rain Alert Value Alarm will sound if value is exceeded for today s rainfall 13 Integrated Hang Hole For easy wall mounting 14 Buttons For setup preferences and to adjust rain alert value 15 SET Button For setup ...

Page 5: ...sert 2 x AA batteries into the battery compartment as shown Follow the polarity diagram in the battery compartment 5 Securely place the battery box back into the rain gauge base 6 Securely re attach the rain gauge cover onto rain gauge base 1 5 6 3 2 SQUEEZE SQUEEZE TABS TO OPEN SQUEEZE LARGE TAB SQUEEZE LARGE TAB 4 Rain Gauge Setup A B C A B C Switch Set to match display Set the A B C Switch Loca...

Page 6: ...teries in fire as batteries may explode or leak DO NOT mix old and new batteries or types of batteries alkaline standard DO NOT use rechargeable batteries DO NOT recharge non rechargeable batteries DO NOT short circuit the supply terminals Display Setup Set the A B C Switch Locate the A B C switch inside the battery compartment Set the A B C switch to A B or C You must select the same letter choic...

Page 7: ...tons are pressed for 8 seconds Enter SET MODE at any time by pressing the SET button Placement for Maximum Accuracy AcuRite sensors are sensitive to surrounding environmental conditions Proper placement of both the display and rain gauge are critical to the accuracy and performance of this product Display Placement Place the display in a dry area free of dirt and dust Display stands upright for ta...

Page 8: ... DO NOT PLACE IN AREAS WHERE PLANT GROWTH CAN GROW INTO CASE AND OBSTRUCT RAIN FLOW THROUGH COLLECTOR DO NOT PLACE IN AN AREA WITH OBSTRUCTIONS ABOVE OK 1 Separate the rain gauge cover from the rain gauge base 2 Locate the two holes on the rain gauge base 3 Fasten the rain gauge base to a sturdy surface like a deck railing or a fence post with screws included using hand tools Power tools may slip ...

Page 9: ...ds mode View records at any time by pressing the button Rain Alarm By default the display s rain alert is set to OFF To set the alarm value use the and buttons on the back of the display to select the parameter for rainfall Choose from a selection of rain accumulation thresholds When a rain alert has been activated an audible alarm will sound and the display will flash the rainfall value Press any...

Page 10: ...ws zeroes Remove rain gauge cover Does the tipping lever flip back and forth easily Try tipping it manually to see if it will register this as rain If not try the reset steps listed above Rainfall registering when there s no rain Make sure the rain gauge is mounted securely so that it cannot move or sway in the wind The rain gauge should be mounted on a solid and level surface in a clear area away...

Page 11: ...p is empty of water the display should register 1 68 42 67 mm Tips There should be nearly an equal number of water drops between cup tips If not then adjust the calibration screws beneath the tipping lever until an equal number of water drops are tipping the cups Then restart the calibration procedure If you don t hear the cups tipping and see water dripping alternately out of each drain there may...

Page 12: ...ul interference and 2 This device must accept any interference received including interference that may cause undesired operation WARNING Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment NOTE This equipment has been tested and found to comply with the limits for a Class B digital device pur...

Page 13: ...ESSLY DISCLAIMED INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTY OF MERCHANTABILITY AND THE IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE We expressly disclaim all liability for special consequential or incidental damages whether arising in tort or by contract from any breach of this warranty Some states do not allow the exclusion or limitation of incidental or consequential damages so th...

Page 14: ...rs AcuRite uses patented technology Visit www AcuRite com patents for details Printed in China 02446 INST 062019 It s more than accurate it s AcuRite offers an extensive assortment of precision instruments designed to provide you with information you can depend on to Plan your day with confidence www AcuRite com Weather Stations Temperature Humidity Weather Alert Radio Kitchen Thermometers Timers ...

Reviews: