Campbell 03002 User manual

Revision: 07/2022
Copyright © 1986 – 2022
Campbell Scientific, Inc.

Table of contents
1. Introduction 1
2. Precautions 1
3. Initial inspection 1
4. QuickStart 2
5. Overview 4
6. Specifications 5
6.1 Wind speed (anemometer) 5
6.2 Wind direction (vane) 6
6.3 Wind sentry assembly 7
7. Installation 7
7.1 Wiring 7
7.2 Programming 9
7.2.1 Wind speed 9
7.2.2 Wind direction 10
7.2.3 WindVector processing instruction 11
7.3 Siting 11
7.4 Assembly and mounting the 03002 11
7.5 Mounting the 03101 anemometer to a crossarm 13
7.6 Mounting the 03301 vane 14
8. Sensor maintenance 14
9. Troubleshooting 15
9.1 Wind direction 15
9.2 Wind speed 16
10. References 16
Appendix A. Importing Short Cut code into CRBasic Editor 17
Appendix B. Example program 18
Appendix C. Wind direction sensor orientation 20
C.1 Determining true north and sensor orientation 20
Table of Contents - i

Appendix D. Wind direction measurement theory 23
Table of Contents - ii

1. Introduction
The 03002 Wind Sentry Set measures both wind speed and direction. It consists of a 3-cup
anemometer and a wind vane mounted on a small crossarm. The anemometer and vane may be
purchased separately.
NOTE:
This manual provides information only for CRBasic data loggers. For retired Edlog data logger
support, see an older manual at www.campbellsci.com/old-manuals .
2. Precautions
lREAD AND UNDERSTAND the Safety section at the back of this manual.
lThe 03002 is a precision instrument. Please handle it with care.
lDo not use cable lengths greater than 30 m (9 ft) in electrically noisy environments.
lThe black outer jacket of the cable is Santoprene® rubber. This compound was chosen for
its resistance to temperature extremes, moisture, and ultraviolet (UV) degradation.
However, this jacket will support combustion in air. It is rated as slow burning when tested
according to U.L. 94 H.B. and will pass FMVSS302. Local fire codes may preclude its use
inside buildings.
lWire color and functions of sensors purchased through Campbell Scientific may not
correspond with the wire colors and functions given in the manufacturer’s manual. To
ensure proper function, follow the wiring provided in Short Cut or in the Campbell Scientific
manual.
3. Initial inspection
lUpon receipt of the 03002, inspect the packaging and contents for damage. File damage
claims with the shipping company. Immediately check package contents against the
shipping documentation. Contact Campbell Scientific about any discrepancies.
Wind Sentry Series 1

lThe model number and cable length are printed on a label at the connection end of the
cable. Check this information against the shipping documents to ensure the expected
product and cable length are received.
lThe sensor is shipped with the cup wheel unattached to the anemometer shaft. Refer to the
Assembly and mounting the 03002 (p. 11) section.
4. QuickStart
A video that describes data logger programming using Short Cut is available at:
www.campbellsci.com/videos/cr1000x-datalogger-getting-started-program-part-3 .Short Cut
is an easy way to program your data logger to measure this sensor and assign data logger wiring
terminals. Short Cut is available as a download on www.campbellsci.com . It is included in
installations of LoggerNet,RTDAQ, or PC400.
The following procedure shows using Short Cut to program the 03002.
1. Open Short Cut and create a new program.
2. Double-click the data logger model.
3. In the Available Sensors and Devices box, type 03002 or find the sensor in the Sensors >
Meteorological >Wind Speed & Direction folder. Double-click 03002 Wind Speed &
Direction Sensor. The wind speed defaults to meters/second. This can be changed by
clicking the Wind Speed box and selecting one of the other options.
Wind Sentry Series 2

4. Click on the Wiring tab to see how the sensor is to be wired to the data logger. Click OK
after wiring the sensor.
5. Select any other sensors you have, then finish the remaining Short Cut steps to complete
the program.
6. In Output Setup, enter the scan rate and Data Output Storage Interval.
Wind Sentry Series 3

7. Select the output options.
8. Click Finish and save the program. Send the program to the data logger if the data logger
is connected to the computer.
9. If the sensor is connected to the data logger, check the output of the sensor in the data
display in LoggerNet,RTDAQ, or PC400 to make sure it is making reasonable
measurements.
5. Overview
The 03002 Wind Sentry Set is used to measure horizontal wind speed and direction.
Wind speed is measured with a three-cup anemometer. Rotation of the cup wheel produces an
ac sine wave voltage with frequency proportional to wind speed. This is a special version of the
03102 built for Campbell Scientific by R. M. Young that has shielded bearings rather than sealed
bearings. The shielded bearings provide a lower starting threshold than sealed bearings.
Vane position is transmitted by a 10kΩ potentiometer. With a precision excitation voltage
applied, the output voltage is proportional to wind direction.
The 03101 Anemometer and 03301 Vane can be ordered as separate sensors, which are also
covered in this manual. These two sensors combined differ from the 03002 only by the absence
of a junction box. The R. M. Young 03002 manual (see References [p. 16]) includes additional
information on the operating principles, installation, and maintenance of the sensor.
Wind Sentry Series 4

Cable length for the Wind Sentry is specified when the sensor is ordered. Table 5-1 (p. 5) gives the
recommended cable length for mounting the sensor at the top of the tripod/tower with a
CM200-series crossarm.
Table 5-1: Recommended cable lengths
CM106B CM110 CM115 CM120 UT10 UT20 UT30
4.2 m (14 ft) 4.2 m (14 ft) 5.8 m (19 ft) 7.3 m (24 ft) 4.2 m (14 ft) 7.3 m (24 ft) 11.3 m (37 ft)
NOTE:
Maximum cable length is 304.8 m (1000 ft).
CAUTION:
Do not use cable lengths greater than 30 m (9 ft) in electrically noisy environments.
Features:
lDesigned for continuous, long term, unattended operation in adverse conditions
lSmall size, simplicity, and rugged construction provide a quality instrument for a modest
price
lIdeal for wind profile studies
lCampbell Scientific version uses shielded bearings, which lowers the anemometer starting
threshold
lCompatible with the LLAC4 4-channel Low Level AC Conversion Module, which increases
the number of anemometers one data logger can measure
lCompatible with Campbell Scientific CRBasic data loggers: CR6, CR1000X, CR800 series,
CR350 series, CR300 series, CR3000, and CR1000
6. Specifications
6.1 Wind speed (anemometer)
Range: 0 to 50 m/s (112 mph), gust survival 60 m/s (134 mph)
Sensor: 12 cm diameter cup wheel assembly, 40 mm diameter hemispherical
cups
Wind Sentry Series 5

Accuracy: ±0.5 m/s (1.1 mph)
Turning factor: 75 cm (2.5 ft)
Distance constant
(63% recovery): 2.3 m (7.5 ft)
Threshold: 0.5 m/s (1.1 mph)
Transducer: Stationary coil, 1300-ohm nominal resistance
Output: AC sine wave signal induced by rotating magnet on cup wheel shaft
100 mV peak-to-peak at 60 rpm; 6 V peak-to-peak at 3600 rpm
Output frequency: 1 cycle per cup wheel revolution; 0.75 m/s per Hz
Cup wheel diameter: 12 cm (4.7 in)
Weight: 113 g (4 oz)
6.2 Wind direction (vane)
Range: 360° mechanical, 352° electrical (8° open)
Sensor: Balanced vane, 16 cm turning radius
Settling time: 20 ms
Damping ratio: 0.2
Delay distance
(50% recovery): 0.5 m (1.6 ft)
Threshold: 0.8 m/s (1.8 mph) at 10° displacement
(1.8 m/s (4 mph) at 5° displacement)
Transducer: Precision conductive plastic potentiometer; 10 kΩ resistance; 1.0%
linearity; life expectancy 50 million revolutions
Rated 1 W at 40 °C, 0 W at 125 °C
Transducer excitation
Requirement: Regulated DC voltage, 15 VDC max
Output: Analog DC voltage proportional to wind direction angle with
regulated excitation voltage supplied by the data logger
Vane length: 22 cm (8.7 in)
Vane weight: 170 g (6 oz)
Wind Sentry Series 6

6.3 Wind sentry assembly
Operating temperature: –50 to 50 °C assuming non-riming conditions
Overall height: 32 cm (12.6 in)
Crossarm length: 40 cm (15.7 in) between instruments (center-to-center)
Mounting diameter: 34 mm (1.34 in), mounts on standard 1 inch IPS pipe
7. Installation
If you are programming your data logger with Short Cut, skip Wiring (p. 7) and Programming (p.
9). Short Cut does this work for you. See QuickStart (p. 2) for a Short Cut tutorial.
7.1 Wiring
Connections to CRBasic data loggers are given in Table 7-1 (p. 7), Table 7-2 (p. 8), and Table 7-3
(p. 8). When Short Cut software is used to create the data logger program, the sensor is wired to
the terminals shown in the wiring diagram created by Short Cut.
Table 7-1: 03002 Wind Sentry Set wire color, wire function, and data logger connection
Wire color Wire function Data logger connection terminal
Red WS signal Uconfigured for pulse input1,P(pulse input),
or P_LL (pulse, low-level ac)
Black WS signal reference ⏚
Green WD signal Uconfigured for single-ended analog input1,
SE (single-ended, analog input)
Blue WD voltage excitation Uconfigured for voltage excitation1,EX,
or VX (voltage excitation)
White WD signal reference ⏚(analog ground)
Clear Shield ⏚(analog ground)
1Uterminals are automatically configured by the measurement instruction.
Wind Sentry Series 7