A100LK Anemometer 7/12 C o p y r i g h t © 2 0 1 2 C a m p b e l l S c i e n t i f i c , I n c .
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A100LK Table of Contents PDF viewers: These page numbers refer to the printed version of this document. Use the PDF reader bookmarks tab for links to specific sections. 1. Introduction..................................................................1 2. Cautionary Statements................................................1 3. Initial Inspection ..........................................................1 4. Quickstart .....................................................................2 4.
A100LK Anemometer 1. Introduction The Windspeed Ltd Model A100LK Anemometer is an IEC and MEASNET rated instrument recommended for wind energy applications where a Class 1 anemometer is required. It is primarily used in wind speed resource assessments and in wind turbine power performance monitoring. The “-L” designation after the A100LK model number designates a cable length.
A100LK Anemometer 4. Quickstart 4.1 Step 1 — Mount the Sensor To mount the sensor, refer to Figure 4-1 and do the following. 1. Mount a CM202, CM204, or CM206 crossarm to a tripod or tower. 2. Secure the CM220 Mount to the crossarm. 3. Place the 27739 30 in. pole in the bottom of the A100LK and tighten the thumb screws. 4. Place the bottom of the 27739 pole in the CM220's u-bolt and tighten the nuts. 5. Use a bubble level to ensure that the anemometer is level. 6.
A100LK Anemometer 4.2 Step 2 — Use SCWin ShortCut to Program Datalogger and Generate Wiring Diagram The simplest method for programming the datalogger to measure an A100LK is to use Campbell Scientific's SCWin Short Cut Program Generator. 1. Open Short Cut and click on New Program. 2. Select datalogger and enter scan interval.
A100LK Anemometer 4 3. Select A100LK and select the right arrow to add it to the list of sensors to be measured then select next. 4. Select the outputs then select finish.
A100LK Anemometer 5. Wire according to the wiring diagram generated by SCWin Short Cut. 5. Overview The A100LK is an IEC Class 1 anemometer. It is a low-power version of the A100L2, which was developed from the proven A100 Porton™ instrument and R30 rotor design. The A100LK consumes little supply current, operating from a supply as low as 5 volts. Rotation of the A100LK's three-cup rotor is electronically converted to pulse output signals proportional to wind speed.
A100LK Anemometer 6. Specifications Features: • IEC Class 1 performance • Low power • High rate of pulses per revolution (up to 13) produced makes it suitable for wind surveying applications where turbulence is estimated 6 Compatible Dataloggers: CR10(X) CR23X CR800 series CR1000 CR3000 CR5000 CR9000(X) Threshold: 0.15 ms-1 (starting speed 0.2 ms-1, stopping speed 0.1 ms-1) Maximum speed: 77.22 ms-1 Accuracy: l% ±0.1 ms-1 Distance Constant: 2.
A100LK Anemometer 7. Operation 7.1 Siting Locate wind sensors away from obstructions (e.g., trees and building). As a general rule, there should be a horizontal distance of at least ten times the height of the obstruction between the anemometer and the obstruction. If mounting the sensors on the roof of a building, the height of the sensors, above the roof, should be at least 1.5 times the height of the building.
A100LK Anemometer 7.3 Programming with CRBasic and Edlog Wind speed is typically measured using a pulse channel. For dataloggers using CRBasic, use the PulseCount() instruction with the pulse channel configured for high frequency with frequency counting. For dataloggers programmed with Edlog, use Instruction 3 and for parameter 3 specify configuration code 22 to output frequency in Hertz. 7.3.1 Slope and Offset Calculations The slope value is entered as the multiplier in the pulse count instruction.
A100LK Anemometer 'Main Program BeginProg Scan (1,Sec,0,0) PanelTemp (PTemp,250) Battery (batt_volt) 'A100LK Wind Speed Sensor (CSL) measurement 'WS_ms' PulseCount(WS_ms,1,2,0,1,A100LK_L_mult,A100LK_L_offset) If WS_ms<0.258 Then WS_ms=0 'Call data tables CallTable Test NextScan EndProg 8. Troubleshooting Symptom: No wind speed 1. Check that the sensor is wired to the Pulse channel specified by the Pulse count instruction. 2.
A100LK Anemometer 10. References 10 1. IEC 61400 Part 12-1, “Wind turbine generator systems Part 12: Wind Turbine Power Performance Testing”. 2. http://www.windspeed.co.uk/ws/index.php?option=faq&task=viewfaq&Ite mid=5&artid=29.
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