Reliable, Accurate Wind Measurements
Suitable for marine applications
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Overview

Designed for offshore and marine applications, the 05106 is a lightweight, robust instrument that measures wind speed and direction. Manufactured by R. M. Young, this wind monitor is cabled for use with Campbell Scientific dataloggers.

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Benefits and Features

  • Waterproof bearing lubricant and a sealed, heavy-duty cable pigtail instead of the standard junction box make it more durable at marine and off-shore locations
  • Compatible with most Campbell Scientific dataloggers
  • Rugged enough for harsh environments
  • Constructed with thermoplastic material that resists corrosion from sea-air environments and atmospheric pollutants
  • Compatible with the LLAC4 4-channel Low Level AC Conversion Module, which increases the number of anemometers one datalogger can measure
  • Uses stainless-steel, precision-grade ball bearings for the propeller shaft and vertical shaft bearings
  • Compatible with the CWS900-series interfaces, allowing it to be used in a wireless sensor network
  • The R. M. Young wind monitor family:
    • 05103, standard version
    • 05103-45, rugged, alpine version
    • 05305, more responsive but less rugged version
    • 05106, marine-grade version

The "-L" on a product model indicates that the cable length is specified at the time of order.

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Detailed Description

The 05106 Wind Monitor-MA 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.

To make it more durable in offshore and marine applications, the 05106 has waterproof bearing lubricant and a sealed, heavy-duty cable pigtail instead of the standard junction box.

The 05106 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 datalogger applies a known precision excitation voltage to the potentiometer element. The output is an analog voltage signal directly proportional to the azimuth angle.

Specifications

General

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
Main Housing Diameter 5 cm (2.0 in.)
Propeller Diameter 18 cm (7.1 in.)
Overall Height 37 cm (14.6 in.)
Overall 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 1.1 m/s (2.4 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)

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
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 datalogger

Compatibility

Mounting

The Wind Monitors can be attached to a CM202, CM204, or CM206 crossarm via a 17953 NU-RAIL fitting or CM220 Right Angle Mounting Bracket. Alternatively, the Wind Monitors can be attached to the top of our stainless-steel tripods via the CM216 Sensor Mounting Kit.

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 datalogger. The LLAC4 allows datalogger control ports to read the wind speed sensor’s ac signals instead of using pulse channels. Dataloggers compatible with the LLAC4 are the CR200(X) series (ac signal ≤1 kHz only), CR800, CR850, CR1000, CR3000, and CR5000.

Datalogger Considerations

The 05106's propeller uses one pulse count channel on the datalogger. 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 05106'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).

Compatible Contemporary Dataloggers

CR200(X) Series CR800/CR850 CR1000 CR3000 CR9000X

Compatible Retired Dataloggers

CR500 CR510 CR10 CR10X 21X CR23X CR9000 CR5000 CR7X
* *

*Measurements are typically processed for output with the Wind Vector instruction, which is not present in the CR500 or CR9000.

Frequently Asked Questions

Number of FAQs related to 05106-L: 13

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  1. Campbell Scientific does not sell an extension cable. A replacement cable can be ordered and built to the desired length (pn 05106CBL-L). This replacement cable has a connector that mates with the connector at the end of the 3 ft cable attached to the 05106-L.

  2. This depends on what is broken. Typically, Campbell Scientific can repair the unit, and the user does not have to purchase a new one.

  3. The measurement instructions will likely remain the same. However, in addition to the multiplier and offset, the type of pulse may change for the wind speed, and the excitation voltage may change for the wind direction. For an explanation of how the datalogger needs to be programmed, see the instruction manual.

  4. The short answer is less than 0.01 mA. The wind speed signal requires no power. The wind direction portion of the sensor only uses a maximum of 0.5 mA when excited with 5 Vdc, and then it is only on for 0.016 s for every measurement. When the wind direction is measured every second (typical), the average current drain is less than 0.01 mA.

  5. Orientation of the wind monitor is done after the datalogger has been programmed, and the location of True North has been determined. True North is usually found by reading a magnetic compass and applying the correction for magnetic declination, where magnetic declination is the number of degrees between True North and Magnetic North. Magnetic declination for a specific site can be obtained from a USFA map, local airport, or through a computer service.

    1. Using Short Cut, click the applicable wind direction sensor in the Selected Sensors list of the Outputs screen.
    2. The two output options enabled are Sample and WindVector. Select WindVector.
    3. The WindVector instruction has output options. Select an option with mean wind direction in it.
  6. The information included on a calibration sheet differs with each sensor. For some sensors, the sheet contains coefficients necessary to program a datalogger. For other sensors, the calibration sheet is a pass/fail report.

  7. This depends on the information contained in the calibration sheet:

    • If the calibration sheet contains coefficient information, Campbell Scientific keeps a copy, and a replacement copy can be requested.
    • If the calibration sheet does not contain coefficients, Campbell Scientific does not keep a copy. It may be possible to contact the original manufacturer for a replacement copy.
  8. Most Campbell Scientific sensors are available as an –L, which indicates a user-specified cable length. If a sensor is listed as an –LX model (where “X” is some other character), that sensor’s cable has a user-specified length, but it terminates with a specific connector for a unique system:

    • An –LC model has a user-specified cable length for connection to an ET107, CS110, or retired Metdata1.
    • An –LQ model has a user-specified cable length for connection to a RAWS-P weather station.

    If a sensor does not have an –L or other –LX designation after the main model number, the sensor has a set cable length. The cable length is listed at the end of the Description field in the product’s Ordering information. For example, the 034B-ET model has a description of “Met One Wind Set for ET Station, 67 inch Cable.” Products with a set cable length terminate, as a default, with pigtails.

    If a cable terminates with a special connector for a unique system, the end of the model number designates which system. For example, the 034B-ET model designates the sensor as a 034B for an ET107 system.

    • –ET models terminate with the connector for an ET107 weather station.
    • –ETM models terminate with the connector for an ET107 weather station, but they also include a special system mounting, which is often convenient when purchasing a replacement part.
    • –QD models terminate with the connector for a RAWS-F Quick Deployment Station.
    • –PW models terminate with the connector for a PWENC or pre-wired system.

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