200-05103 Wind Monitor
200-05106 Wind Monitor-MA (Marine Model)
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| 200-05103 Wind Monitor |
The Model 200-05103 Wind Monitor is a high resolution wind speed and direction sensor. Its simplicity and lightweight corrosion resistant construction make it well suited for a wide range of wind measuring applications.
The wind sensor is a four blade helicoid propeller. Propeller rotation produces an AC sine wave voltage signal with frequency directly proportional to wind speed. Slip rings and brushes are not used, resulting in improved reliability and lower cost.
The wind direction sensor is a rugged yet lightweight vane with a sufficiently low aspect ratio to assure good fidelity in fluctuating wind conditions. Vane position is sensed by a precision conductive plastic potentiometer located in a sealed chamber. With a known excitation voltage applied to the potentiometer, the output signal is directly proportional to azimuth angle. An orientation ring is supplied for preserving wind direction reference when the instrument is removed for maintenance.
The instrument is made of UV stabilized plastic with stainless steel and anodized aluminum fittings. All bearings are stainless steel precision grade. Transient protection and transducer terminations are in a convenient junction box on the mounting post. The instrument mounts on standard 1" pipe. For offshore and marine use, the 200-05106 Wind Monitor-MA offers the added features of special bearing lubricant and sealed heavy duty cable pigtail in place of the junction box.
The 200-05603 Wind Sensor Interface provides calibrated wind speed and direction voltage output signals. Low power circuitry makes it ideal for field studies and remote data-logging applications. The 200-05631 Wind Line Driver provides separate 4-20 mA two-wire current loops for wind speed and direction. The unit is able to drive lines up to several km long and operate in high noise areas. Both the sensor interface and line driver operate over a wide temperature range and include protection from high voltage transients. The units are supplied with a universal mounting bracket for convenient mounting near the Wind Monitor.
Specifications
Range
Wind speed: 0-60 m/s (134 mph)
Gust survival: 100 m/s (220 mph)
Azimuth: 360° mechanical, 355° electrical (5° open)
Accuracy
Wind speed: ± 0.3 m/s (0.6 mph)
Wind direction: ± 3 degrees
Threshold*
Propeller: 1.0 m/s (2.2 mph)
Vane: 1.1 m/s (2.5 mph) at 10° displacement
Dynamic Response
Propeller distance constant: 63% recovery 2.7 m (8.9 ft)
Vane delay distance: 50% recovery 1.3 m (4.3 ft)
Damping ratio: 0.25
Damped natural wavelength: 7.4 m (24.3 ft)
Undamped natural wavelength: 7.2 m (23.6 ft)
Signal Output
Wind speed: magnetically induced AC sine wave voltage, 3 pulses per revolution,
1800 rpm (90 Hz) = 8.8 m/s (19.7 mph)
Azimuth: Analog DC voltage from conductive plastic potentiometer - resistance
10k, linearity 0.25%, life expectancy 50 million revolutions.
Power Required
Potentiometer excitation: Regulated voltage, 15 Vdc maximum
Dimensions
Overall height: 37 cm (14.6")
Overall length: 55 cm (21.7")
Propeller: 18 cm (7.1") dia
Mounting: 34 mm (1.34") dia (standard 1 inch pipe)
Weight
Sensor: 1.0 kg (2.2 lbs)
Shipping: 2.3 kg (5 lbs)
*Nominal values - determined in accordance with ASTM standard procedures.
Shielded bearings lubricated with Type LO-1 Light Instrument Oil.
Ordering Information
200-05103 Wind Monitor, cable not included
200-05103L* Wind Monitor, 4-20mA output, cable not included
200-05103V* Wind Monitor, specify 0-1 Vdc or 0-5 Vdc, cable not included
200-05106 Wind Monitor-MA (Marine Model), includes 10' cable
200-05603B* Wind Sensor Interface (Specify 0-1 Vdc or 0-5 Vdc FS)
200-05631B* Wind Line Driver (4-20 mA current loop)
330-0524 Sensor Cable, per foot
*Specify wind speed scaling
0-50 m/s Add suffix "M"
0-100 mph Add suffix "P"
0-100 knots Add suffix "N"
0-200 km/hr Add suffix "K"