Campbell Met One 034B Instruction Manual
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Campbell Met One 034B Instruction Manual

Wind set
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Met One 034B Wind Set
Revision: 9/16
C o p y r i g h t
©
1 9 8 0 - 2 0 1 6
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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  • Page 1 Met One 034B Wind Set Revision: 9/16 C o p y r i g h t © 1 9 8 0 - 2 0 1 6 C a m p b e l l S c i e n t i f i c ,...
  • Page 3 Quotations for repairs can be given on request. It is the policy of Campbell Scientific to protect the health of its employees and provide a safe working environment, in support of this policy a “Declaration of Hazardous Material and Decontamination”...

  • Page 5: About This Manual

    PLEASE READ FIRST About this manual Please note that this manual was originally produced by Campbell Scientific Inc. primarily for the North American market. Some spellings, weights and measures may reflect this origin. Some useful conversion factors: Area: 1 in...
  • Page 7 • Periodically (at least yearly) check electrical ground connections. WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL SCIENTIFIC PRODUCTS, THE CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR ATTACHMENTS TO TRIPODS AND TOWERS...

  • Page 9: Table Of Contents

    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. Precautions ..............1 3. Initial Inspection ............1 Ships With List ..................
  • Page 10 Table of Contents C. Wind Direction Sensor Orientation ....... C-1 D. Wind Direction Measurement Theory ....D-1 Figures 7-1. 034B mounted on a crossarm using a #17953 Nu-Rail® Crossover Fitting ....................8 7-2. CM200 Series Crossarm with CM220 Right Angle Mounting Bracket .....................

  • Page 11: Introduction

    Met One 034B Wind Set Introduction The 034B Wind Set combines a 3-cup anemometer and vane into a single integrated package to measure wind speed and direction. It is cabled for use with our dataloggers, and can provide measurements for a variety of applications.

  • Page 12: Ships With List

    Met One 034B Wind Set Ships With List The 034B Wind Set ships with: (1) 1/16-inch Allen wrench (1) Bushing from Met One (1) Calibration Sheet (3) Direction hub stickers (1) ResourceDVD (1) Wind Vane (1) Sensor cable of user-specified length...
  • Page 13 Met One 034B Wind Set Select Datalogger Model and Scan Interval (default of 5 seconds is OK for most applications). Click Next. Under the Available Sensors and Devices list, select the Sensors | Meteorological | Wind Speed & Direction folder. Select 034A/034B Wind Speed &...

  • Page 14: Overview

    Met One 034B Wind Set After selecting the sensor, click Wiring Diagram to see how the sensor is to be wired to the datalogger. The wiring diagram can be printed now or after more sensors are added. Select any other sensors you have, then finish the remaining Short Cut steps to complete the program.

  • Page 15: Specifications

    19 ft 24 ft 14 ft 24 ft 37 ft The 034B’s cable can terminate in: Pigtails that connect directly to a Campbell Scientific datalogger • (option –PT). • Connector that attaches to a prewired enclosure (option –PW). Refer www.campbellsci.com/prewired-enclosures for more information.

  • Page 16: General Specifications

    • 6-inch to 10-inch torpedo level • The 034B is mounted to a Campbell Scientific crossarm using either the 17953 Nu-Rail® Crossover Fitting (FIGURE 7-1), or the CM220 Right-Angle Mounting Kit (FIGURE 7-2). Fully insert vane arm into hub (see FIGURE 7-1).
  • Page 17 Met One 034B Wind Set Cover the set screw hole with one of the small round stickers included with the 034B. One of these labels is already installed on the hub covering the set screw that attaches the hub to the sensor. Extra labels are included with the 034B to recover the holes if the sensor has to be disassembled for maintenance.

  • Page 18: 034B Mounted On A Crossarm Using A #17953 Nu-Rail® Crossover

    Met One 034B Wind Set FIGURE 7-1. 034B mounted on a crossarm using a #17953 Nu-Rail® Crossover Fitting CM220 CM200 Series Crossarm FIGURE 7-2. CM200 Series Crossarm with CM220 Right Angle Mounting Bracket...

  • Page 19: Mount To Top Of Tripod

    CM120 tripod via the CM216 Sensor Mounting Kit (FIGURE 7-3). The CM216 extends 10 cm (4 in) above the mast of the tripod. FIGURE 7-3. CM216 mount Wiring Connections to Campbell Scientific CRBasic dataloggers are given in TABLE 7-1. TABLE 7-1. Wire Colour, Wire Function, and Datalogger Connection Datalogger Connection...

  • Page 20: Programming

    Met One 034B Wind Set The dataloggers can also measure wind speed on a control port. With this option the black wire is connected to the 5 V terminal. A 034B-L Wind Set purchased directly from Met One Instruments NOTE has a different configuration on the 6-pin connector.

  • Page 21: Wind Direction

    Met One 034B Wind Set The expression for wind speed (U) is: U = MX + B where M = multiplier X = number of pulses per second (Hertz) B = offset TABLE lists the multipliers (M) and offsets (Off) to obtain metres/second or miles/hour when the Pulse Count instruction is configured to output the result in Hz.

  • Page 22: Long Lead Lengths

    Replace the wind vane potentiometer and bearings. Refer to the • Assistance page at the beginning of this document for the procedure of returning the sensor to Campbell Scientific for wind vane and bearing replacement. Troubleshooting 8.2.1 Wind Direction Symptom: NAN, –9999, or no change in direction Check that the sensor is wired to the excitation and single-ended channel specified by the measurement instruction.

  • Page 23: Wind Speed

    Met One 034B Wind Set Symptom: Incorrect wind direction Verify that the excitation voltage, range code, multiplier and offset parameters are correct for the datalogger type. Check orientation of sensor as described in Section 7, Installation (p. 6) 8.2.2 Wind Speed...
  • Page 24 Met One 034B Wind Set...

  • Page 25: Importing Short Cut Code Into Crbasic Editor

    Appendix A. Importing Short Cut Code Into CRBasic Editor This tutorial shows: How to import a Short Cut program into a program editor for • additional refinement • How to import a wiring diagram from Short Cut into the comments of a custom program Short Cut creates files, which can be imported into CRBasic Editor.

  • Page 27: Example Program

    Appendix B. Example Program The following CR1000 program measures the 034B every 5 seconds, and stores mean wind speed, unit vector mean direction, and standard deviation of the direction every 60 minutes. Wiring for the example is given in TABLE B-1.

  • Page 29: Wind Direction Sensor Orientation

    Appendix C. Wind Direction Sensor Orientation To get optimum wind direction data from your weather station, it is recommended that you set up your wind direction sensor with reference to true north (rather than magnetic north). This Appendix provides advice on how to achieve this. C.1 Magnetic Declination Magnetic declination is sometimes referred to as the magnetic variation or the magnetic compass correction.

  • Page 30: Declination Angles - True North To West Of Magnetic North

    03002, 03101 & 03001 Wind Sentry TRUE NORTH (map bearing) 15 WEST OF MAGNETIC NORTH Point the wind direction sensor to MAGNETIC NORTH TRUE NORTH (345) bearing. COMPASS NEEDLE POINTS TO MAGNETIC NORTH Declination angles for True North to the West of Magnetic North are subtracted from 360, therefore True North reading is (360–...
  • Page 31 Appendix C. Wind Direction Sensor Orientation 1. Fully install your weather station and establish communications with the datalogger. 2. Establish a reference point on the horizon coinciding with True North. 3. Sight down the centre line of the direction sensor and aim its nose cone at this reference point.

  • Page 33: D-1. 034B Potentiometer In A Half Bridge Circuit

    It is not necessary to understand the concepts in this section for the general operation of the 034B, Wind Set with a Campbell Scientific datalogger. A 034B purchased from Campbell Scientific has a 9.53 kΩ fixed resistor and a variable resistor on the excitation line. The variable resistor is adjusted by the manufacturer so its resistance plus the 9.53 kΩ...
  • Page 34 Santo Domingo, Heredia 40305 SOUTH AFRICA COSTA RICA • cleroux@csafrica.co.za • info@campbellsci.cc www.campbellsci.co.za www.campbellsci.cc Campbell Scientific Southeast Asia Co., Ltd. Campbell Scientific Ltd. 877/22 Nirvana@Work, Rama 9 Road Campbell Park Suan Luang Subdistrict, Suan Luang District 80 Hathern Road Bangkok 10250...

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