REALTIME CONTROL

RotorvaneTM F Vector Anemometer
Specifications

Wind speed range 0 - 51 m/s
Wind speed resolution 0.2 m/s
Wind speed accuracy +/- 5%
Wind direction range Full circle - no dead band
Wind direction resolution 1/256 circle, approx 1.4 degrees
Wind direction accuracy +/- 5 degrees
Threshhold < 1 m/s
Analog speed output
OUT1
0-10V = 0-51 m/s. Max load 20 mA.
Analog direction output
OUT2
0 -10V = 0-359 degrees. Max load 20 mA.
Analog direction output
max slew rate
 > 5Kbits/sec
Pulse speed output
OUT1
One 5 msec pulse @ 20 mA (max) each 1.4 metres run.
Pulse voltage is approx. supply voltage - 2.
Serial format
OUT1, IN1 and OUT2
1200 bps, 8 data bits, 1 stop bit, no parity.
Suits a PC RS232 port.
Serial port IN1/OUT1
commands and responses
On receiving a command byte on IN1
the anemometer returns a data byte on OUT1
Command from host
received on IN1
Response from anemometer
delivered on OUT1
ASCII a
Speed, 1 byte
1 bit = 0.2 m/s
ASCII b
Direction, 1 byte
1 bit = 1/256 circle
OUT2 port data stream OUT2 sends a continuous stream of data in the form
ASCII s, ASCII d, speed (1 bit = .2 m/s), dir'n (1 bit = 1/256 circle)
Sensor materials Stainless steel, bronze and UV resistant plastics
Interface enclosure IP65 die cast aluminium case, IP68 cable glands
Optical fiber downlead Agilent HFBR-RXXYYY duplex plastic optical fiber,
max 30 metres long. Standard termination at interface end.
Special termination at sensor end to suit encoder.
Power requirement 12-15 volts DC @ 40 mA (avg.) + port loads,
regulated if analog output is used
Survival wind speed > 55 m/s

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