Campbell Wind Monitor Series, Руководство по эксплуатации продукта, Страница: 13 / 30

Table 7-3: Parameters for wind direction
CR300
Series
CR800,
CR850,
CR1000
CR1000X CR6 CR3000
Measurement range mV2500 mV2500 mV5000 mV5000 mV5000
Excitation voltage 2500 mV 2500 mV 2500 mV 2500 mV 5000 mV
Reverse excitation NA True True True True
Delay or settling time 20000 µs 20000 µs 20000 µs 20000 µs 20000 µs
Multiplier 355 355 355 355 355
Offset 0 0 0 0 0
7.2.3 WindVector processing instruction
The
WindVector
output is used to process and store mean wind speed, unit vector mean wind
direction, and standard deviation of the wind direction (optional) by using the measured wind
speed and direction samples.
7.3 Siting
Locate wind sensors away from obstructions such as trees or buildings. Generally, there should be
a horizontal distance of at least ten times the height of the obstruction between the wind
monitor and the obstruction. If the sensors need to be mounted on a roof, the height of the
sensors above the roof, should be at least 1.5 times the height of the building. See
References (p.
16) for a list of references that discuss siting wind speed and direction sensors.
7.4 Assembly and mounting
Tools required:
l
5/64 inch hex key wrench
l
1/2 inch open end wrench
l
Compass and declination angle for the site (see Wind direction sensor orientation (p. 21))
l
Small screw driver provided with data logger
l
UV resistant cable ties
l
6 to 10 inch torpedo level
Wind Monitor Series 11