DAVIS Weather Monitor II (7440, 7440CS) User Manual
Page 47
Specifications
Weather Monitor II
Page 43
S
PECIFICATIONS
Inside Temperature
Range: -5˚ to 140˚ F (-20˚ to 60˚ C)
Accuracy: ± 1˚F (± 0.5˚C)
Outside Temperature
Range: -50˚ to 140˚ F (-45˚ to 60˚ C)
Accuracy: ±
1˚F (
±
0.5˚C)
Wind Direction
Display Resolution: 16 points (22.5˚) on compass rose, 1˚ in digital display
Accuracy: ±
7˚
Wind Speed
Large Wind Cups
Range: 2 to 150 mph, 3 to 241 km/h, 2 to 130 knots, 1 to 67 m/s
Accuracy: ± 2 mph, 3 km/h, 2 knots, 1 m/s or ±
5%, whichever is greater
Small Wind Cups
Range: 3 to 175 mph, 5 to 282 km/h, 3 to 150 knots, 1 to 67 m/s
Accuracy: ± 2 mph, 3 km/h, 2 knots, 1 m/s or ±
5%, whichever is greater
Wind Chill
Range: -134˚ to 98˚F (-92˚ to 37˚C)
Accuracy: ±
2˚F (
±
1˚C)
Rainfall
Daily Range: 0 to 40.95”(0 to 819 mm)
Accumulated Range: 0 to 99.99”(0 to 9999 mm)
Accuracy:
±(4% + 1 count) for rates from 0.01” to 2” (0.2 mm to 50 mm) per hr;
±(5% + 1 count) for rates from 2” to 4” (50 mm to 100 mm) per hr
Barometric Pressure
Range: 26.00 to 32.00"; 660.0 to 810.0 mm; 880.0 to 1080.0 hPa
Accuracy:
±
0.05";
±
1.3 mm;
±
1.7 hPa
Inside Humidity
Range: 10 to 90% RH
Accuracy: ±
3%
Outside Humidity
Range: 0 to 100% RH
Accuracy: ±
3% (1 to 90% RH),
±
4% (90 to 100% RH)
Time
Accuracy:
±
15 sec/month