05103

Wind Monitor
05103

05103

Orderable

Wind Monitor

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Model:
05103
Item Number:
45012
Warranty:
1 year

Overview

The 05103 Wind Monitor is a lightweight, sturdy instrument for measuring wind speed and direction in your harsh environments. Its simplicity and corrosion-resistant construction make it ideal for a wide range of wind measuring applications. Manufactured by R. M. Young, this wind monitor is cabled for use with your Campbell Scientific data logger.

Key Advantages

Reliable, Accurate Wind Measurements
Compatible with most Campbell Scientific data loggers

Technical Description

The 05103 Wind Monitor is made out of rigid UV-stabilized thermoplastic with stainless steel and anodized aluminum fittings. The thermoplastic material resists corrosion from sea air environments and atmospheric pollutants. It uses stainless-steel precision-grade ball bearings for the propeller shaft and vertical shaft bearings.

The 05103 measures wind speed with a helicoid-shaped, four-blade propeller. Rotation of the propeller produces an ac sine wave that has a frequency directly proportional to wind speed. The ac signal is induced in a transducer coil by a six-pole magnet mounted on the propeller shaft. The coil resides on the non-rotating central portion of the main mounting assembly, eliminating the need for slip rings and brushes.

Wind direction is sensed by the orientation of the fuselage-shaped sensor body, which is connected to an internal potentiometer. The data logger applies a known precision excitation voltage to the potentiometer element. The output is an analog voltage signal directly proportional to the azimuth angle.

Product Notes

requires CM220 or 17953

Benefits

  • Rugged enough for harsh environments
  • Compatible with the CWS900-series interfaces, allowing it to be used in a wireless sensor network
  • Constructed with thermoplastic material that resists corrosion from sea-air environments and atmospheric pollutants
  • Uses stainless-steel, precision-grade ball bearings for the propeller shaft and vertical shaft bearings
  • Ideal for wind profile studies
  • Compatible with the LLAC4 4-channel Low-Level AC-Conversion Module, which increases the number of anemometers one data logger can measure

Specifications

Applications
Harsh

(Rain with light snow. Little or no riming. Some blowing sand. No salt spray.)

Sensor
Helicoid-shaped, 4-blade propeller and fuselage-shaped sensor body
Measurement Description
Wind speed and direction
Operating Temperature Range
-50° to +50°C

(assuming non-riming conditions)

Mounting Pipe Description
34 mm (1.34 in.) OD
Standard 1.0-in. IPS schedule 40
Compliance with Standards
2011/65/EU RoHS Directive
2015/863/EU RoHS Phthalates Amendment
Housing Diameter
5 cm

(2.0 in.)

Propeller Diameter
18 cm

(7.1 in.)

Height
37 cm

(14.6 in.)

Length
55 cm

(21.7 in.)

Weight
1.5 kg

(3.2 lb)

Wind Speed

Range
0 to 100 m/s

(0 to 224 mph)

Accuracy
±0.3 m/s (±0.6 mph) or 1% of reading
Starting Threshold
1.0 m/s

(2.2 mph)

Distance Constant
2.7 m

(8.9 ft) 63% recovery

Output
ac voltage (three pulses per revolution)



90 Hz (1800 rpm) = 8.8 m/s (19.7 mph)

Resolution
(0.0980 m s-1) / (scan rate in seconds) or (0.2192 mph) / (scan rate in seconds)

Wind Direction

Mechanical Range
0 to 360°
Electrical Range
355°

(5° open)

Accuracy
±3°
Starting Threshold
1.1 m/s

(2.4 mph) at 10° displacement

Distance Constant
1.3 m

(4.3 ft) 50% recovery

Damping Ratio
0.3
Damped Natural Wavelength
7.4 m

(24.3 ft)

Undamped Natural Wavelength
7.2 m

(23.6 ft)

Output
Analog dc voltage from potentiometer

(resistance 10 kohm)

Linearity is 0.25%.
Life expectancy is 50 million revolutions.
Voltage
Power switched excitation voltage supplied by data logger

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Compatibility

Mounting

The 05103 can be attached to a CM202, CM202SS, CM203, CM204, CM204SS, or CM206 crossarm via a 17953 Nu-Rail fitting or CM220 Right-Angle Mounting Kit. Alternatively, the 05103 can be attached to the top of our stainless-steel tripods via the CM216 Sensor Mounting Kit. Please note that a lightning rod cannot be used when the CM216 attaches a 05103 atop the tripod’s mast. Therefore the CM216 is only recommended for mounting these sensors if the deployment is short term.

Wind Profile Studies

Wind profile studies measure many wind sensors. For these applications, the LLAC4 4-Channel Low Level AC Conversion Module can be used to increase the number of Wind Monitors measured by one data logger. The LLAC4 allows data logger control ports to read the wind speed sensor’s ac signals instead of using pulse channels. Data loggers compatible with the LLAC4 are the CR200(X) series (ac signal ≤1 kHz only), CR800, CR850, CR1000, CR3000, and CR5000.

Data Logger Considerations

The 05103's propeller uses one pulse count channel on the data logger. Its wind vane requires one single-ended channel and access to an excitation channel (the excitation channel can be shared with other high impedance sensors).

Programming

The 05103's propeller is measured by the PulseCount Instruction in CRBasic and by Instruction 3 (Pulse Count) in Edlog. The wind vane is measured by the BrHalf Instruction in CRBasic and by Instruction 4 (Excite-Delay-SE) in Edlog. The measurements are typically processed for output with the Wind Vector instruction (not present in the CR500 or CR9000 but is present in the CR9000X).

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