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7.4.2 Mounting the wind monitor atop a tripod mast

The wind monitor mounts on top of a CM106B, CM110, CM115, or CM120 tripod by using the
CM216 (see

FIGURE 7-4

(p. 14)). The CM216 extends 10 cm (4 in) above the mast of the tripod.

FIGURE 7-4. The CM216 allows the wind monitor to mount atop a tripod mast

8. Sensor maintenance

Every month do a visual/audio inspection of the anemometer at low wind speeds. Verify that the
propeller and wind vane bearing rotate freely. Inspect the sensor for physical damage.

Replace the anemometer bearings when they become noisy, or the wind speed threshold
increases above an acceptable level. The condition of the bearings can be checked by using the
Propeller Torque Disc as described in the R.M. Young manual (see

www.youngusa.com/products/7/

).

The potentiometer has a life expectancy of fifty million revolutions. As it becomes worn, the
element can produce noisy signals or become non-linear. Replace the potentiometer when the
noise or non-linearity becomes unacceptable. The condition of the vertical shaft (vane) bearings
can be checked by using R.M. Young Vane Torque Gauge.

Wind Monitor Series

14

Summary of Contents for Wind Monitor Series

Page 1: ...Revision 12 2020 Copyright 1984 2020 Campbell Scientific Inc...

Page 2: ...ng the wind monitor to a crossarm 12 7 4 2 Mounting the wind monitor atop a tripod mast 14 8 Sensor maintenance 14 9 Troubleshooting 15 9 1 Wind direction 15 9 2 Wind speed 15 10 References 16 Appendi...

Page 3: ...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 l READ AND UNDERSTAND the Safety section a...

Page 4: ...t the connection end of the cable Check this information against the shipping documents to ensure the expected product and cable length are received The wind monitors ship with 1 1 16 inch hex key wre...

Page 5: ...ick 05103 Wind Speed Direction Sensor 05106 Wind Speed Direction Sensor or 05305 AQ Wind Speed Direction Sensor The wind speed defaults to meters second This can be changed by clicking the Wind Speed...

Page 6: ...utput 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 o...

Page 7: ...ecommended cable length for mounting the sensor at the top of the tripod tower by using a CM200 series crossarm Table 5 1 Recommended cable lengths CM106B CM110 CM115 CM120 UT10 UT20 UT30 4 2 m 14 ft...

Page 8: ...or 1 of reading 0 2 m s 0 4 mph or 1 of reading Starting threshold 1 0 m s 2 2 mph 2 4 mph 1 1 m s 1 0 m s 2 2 mph 0 4 m s 0 9 mph Distance constant 63 recovery 2 7 m 8 9 ft 2 1 m 6 9 ft Output AC vol...

Page 9: ...5 3 Starting threshold 1 1 m s 2 4 mph 1 0 m s 2 0 mph 0 5 m s 1 0 mph Distance constant 50 recovery 1 3 m 4 3 ft 1 2 m 3 9 ft Damping ratio 0 3 0 25 0 45 Damped natural wavelength 7 4 m 24 3 ft 4 9...

Page 10: ...r diameter 18 cm 7 1 in 14 cm 5 5 in 18 cm 7 1 in 20 cm 7 9 in Mounting pipe description 34 mm 1 34 in outer diameter standard 1 0 in IPS schedule 40 Weight 1 5 kg 3 2 lb 1 kg 2 2 lb 1 5 kg 3 2 lb 1 k...

Page 11: ...ely by using Short Cut If your data acquisition needs are more complex the files that Short Cut creates are a great source for programming code to start a new program or add to an existing custom prog...

Page 12: ...d to a 10 k potentiometer which has a 5 degree electrical dead band between 355 and 360 degrees A 1 M resistor between the signal and ground pulls the signal to 0 mV 0 degrees when wind direction is i...

Page 13: ...rection samples 7 3 Siting Locate wind sensors away from obstructions such as trees or buildings Generally there should be a horizontal distance of at least ten times the height of the obstruction bet...

Page 14: ...a compass and the magnetic declination for the site 4 Secure the 12 inch aluminum pipe to the Nu Rail fitting The aluminum pipe is shipped with the wind monitor 5 Place the orientation ring followed b...

Page 15: ...and to the instrument enclosure 10 Secure the cable to the crossarm and tripod or tower by using cable ties FIGURE 7 2 CM220 Right Angle Mounting Kit mounted to a crossarm FIGURE 7 3 Wind monitor moun...

Page 16: ...spect the sensor for physical damage Replace the anemometer bearings when they become noisy or the wind speed threshold increases above an acceptable level The condition of the bearings can be checked...

Page 17: ...nded terminal specified by the measurement instruction 2 Verify that the excitation voltage and range code are correct for the data logger type 3 Disconnect the sensor from the data logger and use an...

Page 18: ...The following references give detailed information on siting wind speed and wind direction sensors EPA 1989 Quality Assurance Handbook for Air Pollution Measurements System Office of Research and Dev...

Page 19: ...dited for additional refinement NOTE Once the file is edited with CRBasic Editor Short Cut can no longer be used to edit the program it created 2 To add the Short Cut wiring information into the new C...

Page 20: ...ction and standard deviation of the direction every 60 minutes Wiring for the examples is given in Table B 1 p 18 Table B 1 Wiring for example programs Color Wire Label CR1000X CR6 Red WS Signal P1 U4...

Page 21: ...ms WindDir FP2 False 0 0 0 FieldNames WS_ms_S_WVT WindDir_D1_WVT WindDir_SD1_WVT EndTable Main Program BeginProg Scan 5 Sec 1 0 Default Data Logger Battery Voltage measurement Batt_Volt Battery Batt_V...

Page 22: ...FieldNames WS_ms_S_WVT WindDir_D1_WVT WindDir_SD1_WVT EndTable Main Program BeginProg Main Scan Scan 5 Sec 1 0 Default Data Logger Battery Voltage measurement BattV Battery BattV Default Wiring Panel...

Page 23: ...racted from 360 degrees to get true north as shown FIGURE C 2 p 22 0 and 360 are the same point on a compass For example the declination for Logan Utah is 11 78 East 11 August 2015 True north is 360 1...

Page 24: ...FIGURE C 1 Magnetic declination for the contiguous United States 2015 FIGURE C 2 Declination angles east of true north are subtracted from 0 to get true north Wind Monitor Series 22...

Page 25: ...FIGURE C 3 Declination angles west of true north are added to 0 to get true north Wind Monitor Series 23...

Page 26: ...the wiper and ground Rs and Vs vary with wind direction The measurement result is the ratio of the measured voltage to the excitation voltage Vs Vx This ratio is related to the resistance as shown in...

Page 27: ...ther manufacturer s products that are resold by Campbell Scientific are warranted only to the limits extended by the original manufacturer Refer to www campbellsci com terms warranty for more informat...

Page 28: ...ion or Repair Reference number contact your CAMPBELL SCIENTIFIC regional office Please write the issued number clearly on the outside of the shipping container and ship as directed For all returns the...

Page 29: ...rohibit climbing by other persons Take reasonable precautions to secure tripod and tower sites from trespassers l Use only manufacturer recommended parts materials and tools Utility and Electrical l Y...

Page 30: ...nfo campbellsci fr www campbellsci fr Germany Location Phone Email Website Bremen Germany 49 0 421 460974 0 info campbellsci de www campbellsci de India Location Phone Email Website New Delhi DL India...

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