034B-L
034B-L
RetiredWind Set
No longer available to order
This product is retained for service, documentation, and compatibility information.
- Model:
- 034B-L
- Item Number:
- 15797
- Warranty:
- 1 year
Overview
The 034B, manufactured by Met One, combines a three-cup anemometer and vane into a single integrated package to measure wind speed and direction. It is cabled for use with our data loggers, and it can provide you with measurements for a variety of applications.
Key Advantages
Compatible with most Campbell Scientific data loggers
Technical Description
The 034B monitors wind speed using a three-cup anemometer that contains a sealed magnetic reed switch. Rotation of the cup wheel produces a pulse that is directly proportional to wind speed. The frequency of the pulse is measured by the data logger pulse count channel, then converted to engineering units (mph, m/s, knots).
Wind direction is sensed with a potentiometer. With the precision excitation voltage from the data logger applied to the potentiometer element, the output signal is an analog voltage that is directly proportional to the azimuth of the wind direction.
Product Notes
Benefits
- Designed for continuous, long-term, unattended operation in adverse conditions
- Constructed of lightweight aluminum
Specifications
- Applications
- General
(Rain with light snow. Little or now riming or blowing sand. No salt spray.)
- Sensor
- 3-cup anemometer and vane
- Measurement Description
- Wind speed and direction
- Operating Temperature Range
- -30° to +70°C
- Weight
- 907 g
(2.0 lb)
Wind Speed (Anemometer)
- Range
- 0 to 75 m/s
(0 to 167 mph)
- Starting Threshold
- 0.4 m/s
(0.9 mph)
- Sensor Output
- Pulsed contact closure
- Accuracy
- 0.1 m/s
(0.25 mph) at < 10.14 m/s (22.7 mph)
±1.1% of trueat > 10.14 m/s (22.7 mph)
- Resolution
- (0.7998 m s–1) / (scan rate in seconds)
or (1.789 mph) / (scan rate in seconds)
- Anemometer Radius
- 10.7 cm
(4.2 in.)
- Anemometer Height
- 24.4 cm
(9.6 in.)
- Output Signal
- Contact closure
(reed switch)
Wind Direction (Vane)
- Mechanical Range
- 360°
- Electrical Range
- 356°
(4° open)
- Accuracy
- ±4°
- Damping Ratio
- 0.25
- Resolution
- < 0.5°
- Potentiometer Resistance
- 0 to 10 kΩ
(open at crossover)
- Threshold
- 0.4 m s–1
(0.9 mph)
- Vane Length
- 33.5 cm
(13.2 in.)
Common Accessories
(4)17953
1- x 1-in. Nu-Rail Crossover Fitting
The 17953 NU-RAIL® Crossover Fitting is used to mount this sensor to a crossarm or a user-supplied 1" IPS pipe. This usage is equivalent to the functionality provided by the CM220 Right Angle Mounting Bracket.
OrderableCM221
Right-Angle Mounting Kit
The CM221 mounts a pipe or tube at 90° to another pipe or tube. It is typically used to attach a sensor with a vertical pipe (including most wind sensors) to a crossarm. The cast aluminum, right-angle mounting bracket has 3.8 cm (1.5 in.) U-bolts and hardware and will accommodate tubing with a 1- to 1.5-in. outer diameter.
OrderableCM216
Sensor Mounting Kit for Top of Tripod Mast
The CM216 Sensor Mount provides a connection point for this sensor to be attached to the top of a CM106B, CM110, CM115, or CM120 tripod.
Orderable39131
DIN Rail Terminal Kit with 2 Terminals and 6 Wires
The 39131 provides the needed DIN rail terminals, separator, and wires to connect any product to a data logger or other peripheral that requires six wires for connection. This kit provides the following wires: black, light blue, green, red, white, and clear. The color-coding of these wires matches the wire coloring of the product for ease in connection, maintenance, and troubleshooting.
Orderable
Replacement Parts
(5)13764
Replacement Reed Switch for 034B or 034A
The 13764 reed switch is difficult to replace without shattering the reed switch in the installation process. Factory repair is recommended.
Orderable13765
Replacement Wind Vane Tail for 034B or 034A
The 13765 wind vane tail can be replaced by the user.
Orderable16895
034B or 034A Replacement Calibration Screw or Shoulder Bolt
The 16895 Calibration Screw holds the vane stationary during the calibration process.
Orderable3648
Replacement Bearing for the 034B, 014A, or 034A (two required)
The 3648 bearing is difficult to replace without shattering the adjacent reed switch. Factory replacement is recommended. Two bearings are required.
Orderable034BCBL
Replacement Cable for 034B or 034A Wind Sets
The 034BCBL can be easily replaced by the user. It consists of a 24 AWG cable with a Santoprene® jacket. The cable has a small connector that attaches to the base of the sensor.
Limited availability
Previously ordered as the 13549, the 034A/CBL, or the 034B/CBL.
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Compatibility
Mounting
The 034B can be attached to a Campbell Scientific crossarm using a 17953 Nu-Rail fitting or a CM220 Right Angle Mounting Bracket. Alternatively, the 034B can be attached to the top of our stainless-steel tripods via the CM216 Sensor Mounting Kit. The CM216 extends 4 inches above the mast of a CM106B, CM110, CM115, or CM120 tripod.
Data Logger Considerations
The 034B's anemometer 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 034B's anemometer 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).
