DAVIS Weather Wizard III Operating and maintenance instructions

DS7425, 7425CS (Rev. E, 1/5/07)
1
Perception and Wizard Stations
7425
7425CS
Weather Wizard III®Station
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.
General
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)
Sensor Inputs
RF Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RC low-pass filter on each signal line
Data Displayed on Console
General
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 seconds
Times and Dates of Maximum and Minimum Values . . . . Stored with value
Rainfall (requires Rain Collector)
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
±(5% + 1 count) for rates from 2" to 4" (50 mm to 100 mm) per hour
Functions (Period is selected by user). . . . . . . . . . . . . . . Total Rainfall for period, Daily Rainfall Amount (alarm)
Temperature
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
Temperatures
Inside Temperature (Air) (sensor located inside console)
Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . 1°F or 1°C.°(nominal). Celsius is converted from Fahrenheit and
rounded to the nearest 1°C.
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
Temperatures

[phone] •FAX [phone] •[email protected] •www.davisnet.com
3465 Diablo Ave., Hayward, CA 94545-2778
2
Perception and Wizard Stations
Wind
Wind Chill
Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . 1°F or 1°C.°(nominal). Celsius is converted from Fahrenheit and
rounded to the nearest 1°C.
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -134° to 98° F (-92° to 37° C)
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±4°F (±2°C)
Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current Wind Chill (alarm), Minimum Wind Chill
Wind Direction
Display Resolution. . . . . . . . . . . . . . . . . . . . . . . . . . 16 points (22.5°) on compass rose, 1° in digital display
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±7°
Wind Speed
Resolution and Units . . . . . . . . . . . . . . . . . . . . . . . . 1 mph, 1 km/hr, 0.1 m/s, or 1 knot (user-selectable)
Range (large wind cups) . . . . . . . . . . . . . . . . . . . . . 2 to 150 mph, 2 to 130 knots, 1 to 67 m/s, 3 to 241 km/h
Range (small wind cups) . . . . . . . . . . . . . . . . . . . . . 3 to 175 mph, 3 to 150 knots, 1.5 to 79 m/s, 5 to 282 km/h
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.25 seconds
Accuracy (large wind cups) . . . . . . . . . . . . . . . . . . . ±2 mph (2 kts, 3 km/h, 1 m/s) or ±5%, whichever is greater
Accuracy (small wind cups) . . . . . . . . . . . . . . . . . . . ±3 mph (3 kts, 5 km/h, 1.5 m/s) or ±5%, whichever is greater
Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current Speed (alarm), Maximum Speed
Time
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±15 seconds/month
Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current Time, Current Date
Package Dimensions
Station Connection Diagram
Product # Package Dimensions
(Length x Width x Height) Package Weight UPC Codes
7425 18.00" x 10.25" x 3.25"
(458 mm x 261 mm x 79 mm) 4.3 lbs. (2.0 kg)
011698 74250 9
7425EU 011698 74251 6
7425UK 011698 74252 3
7425CS 17.50" x 11.75" x 9.25"
(458 mm x 299 mm x 235 mm) 8.0 lbs. (3.7 kg)
011698 00094 4
7425CSEU 011698 00094 4
7425CSUK 011698 00094 4
Weather Wizard III Connection Diagram
Rain Collector
Anemometer
T
emp Sensor
Junction
Box
Power
Adapter
WeatherLink
Console
To Computer