Download wind speed and direction sensors – wsd1

WIND SPEED AND DIRECTION SENSORS –
WSD1
The wind speed section of the sensor consists of a low-inertia ABS cup
assembly for fast response mounted on a dual ballrace-supported stainless
steel shaft. A benefit of this design is the zero power requirement needed for
operation.
The wind direction component of the sensor consists of a dynamically
balanced wind vane operating a triple ballrace supported shaft and microtorque potentiometer with a small deadband of 3o, usually at North. The
benefit of this is precise and accurate measurements in all environments.
The WSD1 produces a pulse signal output, which means that most modern
data capture units are compatible with these sensors with little or no
interfacing.
There are two mounting systems recommended; the full mast kit or the
bracket kit. These options are provided because the WSD1 is a very
adaptable instrument can be used in any situation or environment.
TECHNICAL SPECIFICATIONS
Speed Sensor:
Calibration
Reed detector
Start up1
Accuracy
Linearity
Contact rating
Supply voltage
Supply current
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1 contact closure / 1.493m.
Bench tested to a minimum speed of 90m/s.
0.5 m/S typically.
2%
2%
50 Watts. (d.c. resistive)
100 Vdc maximum
1 A maximum.
NB. Supply: Voltage 100Vdc Current 1A max. Contact switched must not exceed the wattage
rating. May be used in circuits down to zero voltage and current.
Direction Sensor:
Mechanical travel
Electrical travel
Calibration
Resistance tolerance
Linearity tolerance
Temperature Coefficient of
wire
Temperature range
Max2
Supply Voltage
Recommended Max. Voltage
Height
Max arc
Weight
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360o (Endless)
357o 2o
0 - 1K  potentiometer for 0-357o electrical travel.
3%
0.5%
20ppm/oC
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-20oC to +70oC
80Vdc
24Vdc
280mm
120mm
500 gms approx.
ORDERING INFORMATION
WSD1
WSS1
WSS2
Wind Speed and Direction sensor
Wind Speed and Direction sensor plus a full 2 metres mast assembly, guys and pegs are
supplied.
Wind Speed and Direction sensor plus a mounting bracket for horizontal or vertical mast
up to 50mm diameter
ACCESSORIES AND RELATED PRODUCTS
DT2-W Small, dedicated Wind monitoring data logger
DT-CAB DT2 Data logger (RS232) serial communication cable
LB-380 4-20mA or 0-10V selectable wind converter for the WSD1 sensor
1 Start-up is defined as the speed required to commence the movement of the cups from a standstill in zero wind.
However, in practice an anemometer rarely stops and very low wind-speeds are able to be detected due to the lowinertia cup assembly.
2To use voltages higher than the RECOMMENDED MAXIMUM, then a series limiting resistor must be included
within the circuit.