Campbell Met One 034A-L Instruction Manual

Campbell Met One 034A-L Instruction Manual

Integrated cup anemometer and wind vane

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Met One 034A-L Windset
Revision: 7/97
C o p y r i g h t
( c )
1 9 8 0 - 1 9 9 7
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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Summary of Contents for Campbell Met One 034A-L

  • Page 1 Met One 034A-L Windset Revision: 7/97 C o p y r i g h t ( c ) 1 9 8 0 - 1 9 9 7 C a m p b e l l S c i e n t i f i c ,...
  • Page 2 CAMPBELL SCIENTIFIC, INC. CAMPBELL SCIENTIFIC, INC. will return such products by surface carrier prepaid. This warranty shall not apply to any CAMPBELL SCIENTIFIC, INC. products which have been subjected to modification, misuse, neglect, accidents of nature, or shipping damage. This warranty is in lieu of all other warranties, expressed or implied, including warranties of merchantability or fitness for a particular purpose.
  • Page 3: Table Of Contents

    034A-L Table of Contents PDF viewers note: These page numbers refer to the printed version of this document. Use the Adobe Acrobat® bookmarks tab for links to specific sections. 1. General ................1 2. Specifications .............1 3. Installation..............1 3.1 Siting......................1 3.2 Mounting....................1 4.
  • Page 4: A-2. Declination Angles East Of True North Are Subtracted From

    034A-L Table of Contents A-2. Declination Angles East of True North Are Subtracted from 0 to Get True North................. A-2 A-3. Declination Angles West of True North Are Added to 0 to Get True North................. A-3 Table 5-1. Multipliers and Offsets for Wind Speed and Direction......4 7-1.
  • Page 5: General

    MET ONE 034A-L WINDSET 1. GENERAL 3. INSTALLATION The Met One 034A-L Windset is an integrated 3.1 SITING cup anemometer and wind vane. The Locate wind sensors away from obstructions anemometer consists of three cups that sense (e.g. trees and building). As a general rule of the wind speed.
  • Page 6 MET ONE 034A-L WINDSET Shoulder Screw Alignment Bushing Screw 019ALU Crossarm 3/4 x 1 inch Nu-Rail FIGURE 3-1. 034A-L Mounted on a 019ALU Horizontal Crossarm. Attach the sensor cable to the six pin male direction is measured by a single-ended analog connector on the 034A-L.
  • Page 7: Datalogger Programming

    MET ONE 034A-L WINDSET CONNECTOR PIN-OUT PIN 1 - AZIMUTH SIGNAL PIN 2 - AZIMUTH REFERENCE PIN 3 - AZIMUTH EXCITATION PIN 4 - PULSE OUT PIN 5 - PULSE REFERENCE PIN 6 - SHIELD Datalogger ADJUSTABLE CONNECTOR RESISTANCE (PIN) 9.53K OHM...
  • Page 8: Wiring

    MET ONE 034A-L WINDSET TABLE 5-1. Multipliers and Offsets for Wind NOTE: 034A-L Windsets purchased Speed and Direction directly from Met One Instruments have a different configuration on the 6 pin Units Datalogger Instruction Multiplier connector. In addition, they do not have the...
  • Page 9 MET ONE 034A-L WINDSET Real Time (P77) 0110 Day,Hour/Minute Wind Vector (P69) Reps Samples per Sub-Interval S, θu, & σ(θu) Polar** Wind Speed [ WndS_m_s ] Wind Direction [ WndD_deg ] -Input Locations- 1 WndS_m_s 2 WndD_deg EXAMPLE 2. Sample 21X Instructions ;{21X}...
  • Page 10: Sensor Maintenance

    Do • Replace anemometer bearings. Contact not used long lead lengths in electrically Campbell Scientific for a Return Materials noisy environments. Authorization (RMA) number at (801) 753- 2342. TABLE 7-1. Multiplier and Offset for Wind...
  • Page 11 MET ONE 034A-L WINDSET EXAMPLE 3. Sample CR10(X) Program when Long Leads are Required ;{CR10X} *Table 1 Program Execution Interval (seconds) Pulse (P3) Reps Pulse Channel 2 Switch Closure, Output Hz Loc [ WndS_m_s ] 0.7990 Mult 0.2811 Offset ;Set the wind speed to zero if the wind is not blowing.
  • Page 12: Wind Direction Measurement Theory

    The 034A-L Windsets purchased from different excitation voltage. See Section 13.5 in the datalogger manual from more information Campbell Scientific have a 10 kΩ resistor on on the bridge measurements. the excitation line. This resistor prevents erroneous measurements when the potentiometer shorts to ground as the wind 8.2 DC HALF BRIDGE, INSTRUCTION P4...
  • Page 13 MET ONE 034A-L WINDSET Research and Development, Research Triangle Park, NC, 27711. EPA, 1987: On-Site Meteorological Program Guidance for Regulatory Modeling Applications, EPA-450/4-87-013, Office of Air Quality Planning and Standards, Research Triangle Park, NC 27711. The State Climatologist, 1985: Publication of...
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  • Page 16 Campbell Scientific Companies Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES www.campbellsci.com info@campbellsci.com Campbell Scientific Africa Pty. Ltd. (CSAf) PO Box 2450 Somerset West 7129 SOUTH AFRICA www.csafrica.co.za sales@csafrica.co.za Campbell Scientific Australia Pty. Ltd. (CSA)

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