DAVIS 7425 General Description

Weather Wizard III
The Weather Wizard III station features the
following: anemometer, inside and outside
temperature sensors, junction box, and console. The
console provides A/D conversion, calculations, and data display. A
DC-power adapter and an 8' (2.4m) cable (for connecting the junction box and console) are included. Options include
the Rain Collector, and WeatherLink (# 7862) which provides data logging and a serial interface to a computer.
G e n e r a l
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . -5° to 140° F (-20° to 60° C)
Display Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32° to 140° F (0° to 60° C)
Supply Power (adapter included) . . . . . . . . . . . . . . . . . . . 16 mA (typical) at 10 to 16 V (100 mA when display is illuminated)
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Modular (RJ-11, RJ-12, and RJ-45)
Recommended Maximum Cable Length . . . . . . . . . . . . . 240' (72 m), sensor array to console
Housing Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Black ABS plastic
Display Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LCD
Dimensions
Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.25" x 5.4" x 3.0" (133 mm x 137 mm x 76 mm)
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.4" x 1.9" (112 mm x 48 mm)
Weight, total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 lbs. 6 oz. (1.53 kg)
S e n s o r I n p u t s
RF Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RC low-pass filter on each signal line
D a t a D i s p l a y e d o n C o n s o l e
G e n e r a l
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 seconds
Times and Dates of Maximum and Minimum Values . . . . Stored with value
R a i n f a l l ( r e q u i r e s R a i n C o l l e c t o r )
Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.01" or 0.2 mm (user-selectable)
Daily Rainfall Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 40.95" (0 to 819 mm)
Total Rainfall Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 99.99" (0 to 9999 mm)
Rainfall Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±(4% + 1 count) for rates from 0.01" to 2" (.2 mm to 50 mm) per hour
Functions (Period is selected by user) . . . . . . . . . . . . . . . Total Rainfall for period, Daily Rainfall Amount (alarm)
T e m p e r a t u r e
Outside Temperature (Air)
Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . 1 or 0.1°F or 1 or 0.1°C° Celsius is converted from Fahrenheit
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -50° to 140° F (-45° to 60° C)
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1°F (±0.5°C)
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current Temperature (high and low alarms), Maximum and Minimum
Inside Temperature (Air) (sensor located inside console)
Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . 1°F or 1°C.°(nominal). Celsius is converted from Fahrenheit and
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32° to 140° F (0° to 60° C)
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1°F (±0.5°C)
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current Temperature (high and low alarms), Maximum and Minimum
®
Station
±(5% + 1 count) for rates from 2" to 4" (50 mm to 100 mm) per hour
Temperatures
rounded to the nearest 1°C.
Temperatures
7425CS
Perception and Wizard Stations
DS7425, 7425CS (Rev. E, 1/5/07)
7425
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