Davis Instruments DWW6351 Manuale Utente

Calibrating, Setting, and Clearing Variables

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Before calibrating the barometric pressure, be sure the station is set to the 
correct elevation. See “Screen 10: Elevation” on page 11 for more information. Find the nearest source of barometric pressure, such as a local airport, to get a 
current barometric pressure. 
1. Press BAR to select barometric pressure.
2. Press and release 2ND, then press and hold SET. The barometric pressure 

variable blinks. 

3. Continue holding the key until the Weather Center reads “SET BAR”.
4. Press the < and > keys to select digits in the variable.
5. Press + and - keys to add to or subtract from the digit’s value.
6. Press DONE to exit calibration.

The Rain Error in Percent refers to the measuring error of your rain collector. 
This is called the Rain Error percentage. To set the rain error percentage:
1. Enter Setup Mode by pressing 2ND and then SETUP.
2. Press DONE multiple times until Screen 13: Rain Collector displays. See 

3. Press and release 2ND 

and then press SET to 
display the RAIN 
ERROR IN PERCENT 
screen.

4. Press the + and - keys to add or subtract from the percent amount. A positive 

percentage rate adds a certain percentage to all the rain fall totals. A 
negative percentage rate subtracts a certain percentage from all rain fall 
totals. The Rain Error Percentage range is -25 to 25 percent. (Not all 
corrections are available, so you may have to choose the closest one.)

5. Press and hold DONE to save the setting and exit Setup Mode.

Setting a weather variable allows you to manually enter a total for that weather 
variable that accrued prior to installation of your weather station. 
You can set values for the following weather variables: 
• Daily Rain — Sets the daily rain total. Monthly and yearly rain totals are 

updated. 

• Monthly Rain — Sets the total rain for the current month. Does not affect 

the yearly rain total.

• Yearly Rain — Sets the current year’s rain total.
• Daily ET (Evapotranspiration) — Sets the daily ET total. Monthly and 

yearly ET totals are updated. 

• Monthly ET— Sets the current month’s ET. Does not affect yearly total.
• Yearly ET — Sets the current year’s total ET.