Specifications - DAVIS 6415 User Manual

Specifications

General
Operating Temperature . . . . . . . . . . . +5°F to +131°F (−15°C to +55°C)
Attached Cable Length . . . . . . . . . . 40' (12 m)
Cable Type . . . . . . . . . . . . . . . . . . . . 4-conductor, 26 AWG
Connector . . . . . . . . . . . . . . . . . . . . . Modular connector (RJ-11)
Maximum Cable Length . . . . . . . . . . 250' (76 m)
Sensor Output
Wind Direction
Display Resolution. . . . . . . . . . . . . . 16 points (22.5°) on compass rose, 1° in
Accuracy . . . . . . . . . . . . . . . . . . . . . ±2 degrees at wind speeds >7 mph (3 m/s);
Wind Speed
Resolution and Units . . . . . . . . . . . . Measured in 1 mph. Other units are 
Range . . . . . . . . . . . . . . . . . . . . . . . 0 to 89 mph, 0 to 78 knots, 0 to 40 m/s, 
Accuracy . . . . . . . . . . . . . . . . . . . . . ±2 mph (2 kts, 3 km/h, 1 m/s) or ±4%, 
Input/Output Connections
Black . . . . . . . . . . . . . . . . . . . . . . . . Wind speed contact closure to ground
Red . . . . . . . . . . . . . . . . . . . . . . . . . Ground
Green . . . . . . . . . . . . . . . . . . . . . . . Wind direction pot wiper 
Yellow . . . . . . . . . . . . . . . . . . . . . . . Pot supply voltage
Wind Speed Translation Formula . . V = P(2.25/T) (V = speed in mph, P = no. of
Wind Direction Translation . . . . . . . Variable resistance 0 - 20K
Sonic Anemometer Installation Manual
Product Number: 6415
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numeric display
±4 degrees at wind speeds < 7 mph (3 m/s)
converted from mph and rounded to nearest
1 km/h, 
0.1 m/s, or 1 knot
0 to 144 km/h
whichever is greater
Ω
(20K potentiometer)
pulses per sample period, T = sample period
in seconds))
Ω
10K = south, 180°
Document Part Number: 7395.378 Rev D (3/5/20)
Ω
; 