Sonic Anemometer Installation Manual
Product Number: 6415 Document Part Number: 7395.378 Rev D (3/5/20)
© Davis Instruments Corp. 2020. All rights reserved.
Vantage Pro is a registered trademark of Davis Instruments Corporation, Hayward, CA. Information in this
document subject to change without notice. Davis Instruments Quality Management System is ISO 9001
certified.
3465 Diablo Avenue, Hayward, CA 94545-2778 U.S.A.
510-732-9229 • Fax: 510-732-9188
[email protected] • www.davisinstruments.com
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
numeric display
Accuracy . . . . . . . . . . . . . . . . . . . . . ±2 degrees at wind speeds >7 mph (3 m/s);
±4 degrees at wind speeds < 7 mph (3 m/s)
Wind Speed
Resolution and Units . . . . . . . . . . . . Measured in 1 mph. Other units are
converted from mph and rounded to nearest
1 km/h,
0.1 m/s, or 1 knot
Range . . . . . . . . . . . . . . . . . . . . . . . 0 to 89 mph, 0 to 78 knots, 0 to 40 m/s,
0 to 144 km/h
Accuracy . . . . . . . . . . . . . . . . . . . . . ±2 mph (2 kts, 3 km/h, 1 m/s) or ±4%,
whichever is greater
Input/Output Connections
Black . . . . . . . . . . . . . . . . . . . . . . . . Wind speed contact closure to ground
Red . . . . . . . . . . . . . . . . . . . . . . . . . Ground
Green . . . . . . . . . . . . . . . . . . . . . . . Wind direction pot wiper
(20K
Ω
potentiometer)
Yellow . . . . . . . . . . . . . . . . . . . . . . . Pot supply voltage
Wind Speed Translation Formula . . V = P(2.25/T) (V = speed in mph, P = no. of
pulses per sample period, T = sample period
in seconds))
Wind Direction Translation . . . . . . . Variable resistance 0 - 20K
Ω
;
10K
Ω
= south, 180°
Summary of Contents for 6415
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