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Fourier Weather Station User Manual

Fourier weather station data loggers: user guide
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Weather Station

User Guide
Fourier Systems
Second Edition
Second Print
Printed in March 2007

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Summary of Contents for Fourier Weather Station

  • Page 1: Weather Station

    Weather Station User Guide Fourier Systems Second Edition Second Print Printed in March 2007...

  • Page 3: Table Of Contents

    3.2.14 Wiring the Weather Station ... 15 A. Wireless Connection ... 16 B. Cable Connection ... 18 3.2.15 Programming MultiLogPRO ... 20 3.2.16 Connecting the Weather Station to the Computer ... 21 A. Wireless Connection ... 21 B. Cable Connection ... 22 3.2.17 Wiring Diagram... 22 3.3 P...
  • Page 4 4.3.2 Operating Modes ...30 4.3.3 Station Settings ...31 4.3.4 Setup the Weather Station ...32 4.3.5 Start Recording...34 4.3.6 Stop Recording...34 4.3.7 Saving Data ...34 4.3.8 Open Files ...35 4.3.9 Change Units Settings...35 4.3.10 Print ...36 4.4 V ...37 IEW THE 4.4.1...
  • Page 5 5.1 G ...55 ENERAL 5.1.1 External Connections ... 55 5.1.2 AC/DC Adaptor... 57 5.2 S TAND LONE PERATION 5.2.1 Front Panel Layout ... 57 5.2.2 Input Modes... 58 5.2.3 Quick-Start ... 59 5.2.4 Working with the MultiLogPRO Menus ... 61 5.2.5 Graphic Display ...
  • Page 6 7.5 D ...85 NALYSIS 7.6 Q ...85 UESTIONS 7.7 F URTHER UGGESTIONS SPECIFICATIONS ...87 APPENDIX: FIGURES ...89 10 INDEX ...90 ...86...

  • Page 7: Introduction

    Weather Station main box and the other three are external sensors. The MultiLogPRO is placed in the Weather Station main box to protect it from harsh weather conditions The power is supplied from a solar panel and rechargeable battery.

  • Page 8: Parts List

    2 Parts List 2.1 Case 2.2 Mounting Tripod and bag 2.3 Magnet antenna with antenna shelf** 2.4 Wind sensor (Anemometer) Figure 1: Anemometer 2.5 Rain Collector mounted on tray Figure 2: Rain collector, base and cone Parts List 2.6 MultiLogPRO Figure 3: MultiLogPRO 2.7 Radiation Shield with Temperature and Humidity dual...
  • Page 9 2.8 Solar Panel on shelf Figure 5: Solar Panel 2.9 Weather Station main box containing items 2.9.1 to 2.9.9 2.9.1 Two rechargeable 12V batteries 2.9.2 Adaptor box for the rain and wind sensors and containing the barometric pressure sensor 2.9.3 Charge controller 2.9.4...

  • Page 10: Station Installation

    There is no way of programming or operating the MultiLogPRO via the software, therefore there are two steps to take if you wish to reprogram your Weather Station. Firstly, temporarily connect MultiLogPRO to the computer with the supplied communication cable (step 3.2.15) and set it up.

  • Page 11: Assembling The Weather Station

    Install in a location where wind flow is unobstructed by trees and nearby buildings Try to avoid possible obstructions from rainfall If you install the Weather Station on a roof, the anemometer (wind sensor) must be at least 1.2 m above the roofline for accurate wind measurements The Solar Radiation Shield works best in a location where there is a steady breeze.

  • Page 12: Mounting The Tripod

    3.2.2 Mounting the Tripod Take the Tripod out of its bag and unfold it. Pull out the extension tube to about 50cm and secure it. Fasten all the screws tightly. 3.2.3 Securing the Tripod You must secure the tripod to the surface. Mounting on a wooden surface Screw a hook into the floor adjacent to each leg and fasten the leg to the hook with a nylon cable tie.

  • Page 13: Preparing The Anemometer (Wind Sensor)

    clockwise until the latches “lock” into place. As you reattach the cone, make sure to run the cable to the cable slot in the base, or the cone will not fit snugly against the base. Place the debris screen, point down, into the cone. The screen prevents large bits of debris from blocking the funnel hole 3.2.6 Preparing the Anemometer (Wind Sensor) Open the anemometer kit and attach the drip ring.
  • Page 14 Gently push up the drip ring until it reaches the groove on the control head. Make sure the lower edge of the drip ring is aligned with the lower edge of the control head. Figure 8: Installing the drip ring onto the anemometer control head Attach the wind cups: Push the wind cups onto the stainless steel shaft at the end of the arm (see Figure 9).

  • Page 15: Preparing To Install The Weather Station Components

    (see Figure 15). 3.2.7 Preparing to Install the Weather Station Components For easy mounting we advise you to slide the Weather Station components (except for the main Weather Station box) over the tripod's extension tube before raising it to its maximum height.

  • Page 16: Installing The Anemometer And The Antenna Shelf

    Next the Radiation Shield: Slide the two U-bolts at the back of the Radiation Shield’s mounting bracket over the tripod’s extension tube Next the Rain Collector: Slide the two Ω-bolts at the back of the tray over the tripod’s extension tube 3.2.8 Installing the Anemometer and the Antenna Shelf Install the Anemometer Base: Hold the anemometer base against the top end of the pipe and...
  • Page 17 Figure 12: Installing the antenna shelf Place a ¼” lock washer and a ¼” wing nut over each end of the U- bolt and tighten the wing nuts (see Figure 13) Figure 13: the anemometer base with the antenna shelf Install the anemometer arm: Insert the anemometer arm into the anemometer base.
  • Page 18 Figure 14: Inserting the anemometer arm to the base Insert the pan head screw into one of the holes in the base and slide it through the arm. Secure the pan head screw using the flat washer, lock washer, and hex nut as shown in Figure 15 Figure 15: Attaching the anemometer arm to the base Raise the extension tube to its maximal height and fasten tightly Station Installation...
  • Page 19 Antenna Rain Collector Anemometer Solar panel Radiation shield Weather Station main box Figure 16: Mounting the Weather Station Station Installation...

  • Page 20: Installing The Solar Panel

    Place the magnet antenna on top of the antenna shelf (see Figure 16 on page 3.2.13 Installing the Main Weather Station Box Mount the Weather Station main box about 5cm beneath the top of the base tube (see Figure 16 on page 13) so it sits under the...

  • Page 21: Wiring The Weather Station

    Unscrew the two Ω bolts from the back of the Weather Station main Hold the back of the Weather Station main box against the tripod's base tube, 5cm beneath the top Place one Ω bolt so it wraps around the pipe and the two upper screws at the back of the box are inserted to the U-bolt holes Place a ¼...

  • Page 22: Wireless Connection

    Figure 17: Wiring the Weather Station main box A. Wireless Connection Insert the antenna cable to the Weather Station main box through the hole at the bottom of the box (A) and connect it to the antenna socket (B) at the top of the transmitter (see Figure 17)
  • Page 23 Connect the cables to MultiLogPRO: Insert the humidity and temperature sensor cable from the radiation shield to the Weather Station main box through the hole at the bottom of the box (A) and connect it to input 3 (I/O -3) on...

  • Page 24: Cable Connection

    Enter button on the MultiLogPRO itself. Close the Weather Station main box and lock it by fastening the two plastic screws on the upper and lower right sides of the box B.
  • Page 25 Figure 19: Connecting the serial communication cable adaptor Insert the male plug of the 30m serial communication cable to the Weather Station main box through the hole at the bottom of the box (A) and connect it to the serial communication cable adaptor...

  • Page 26: Programming Multilogpro

    Wait until the main menu is displayed on MultiLogPRO's LCD screen, then press Enter Close the Weather Station main box and lock it by fastening the two plastic screws on the upper and lower right sides of the box 3.2.15 Programming MultiLogPRO MultiLogPRO ships already programmed to the Weather Station default setup.

  • Page 27: Connecting The Weather Station To The Computer

    Setting up MultiLogPRO prior to operating it in a wireless connection Note: If you wish to operate your Weather Station in its default mode there is no need to set MultiLogPRO up, simply proceed to Section 3.2.16 instructions Disconnect MultiLogPRO from the Weather Station main box Connect MultiLogPRO to the supplied AC –...

  • Page 28: Cable Connection

    Note: The serial COM ports are usually located at the back of the computer. Look for a 9 pin D type male socket that matches the female plug of the 30m serial cable. Connect the AC/DC adaptor to the 9-12V DC socket at the bottom of the receiver and plug the adaptor into the mains.

  • Page 29: Powering The Weather Station

    (see L in Figure 22) that provides discharge and overcharge protection The batteries and the controller are located inside the Weather Station main box. In order to reach the controller open the Weather Station box and remove MultiLogPRO. The Controller Display The controller contains a green LED (N) and a LED (P) which can change its color from red via yellow to green in ten different colors.
  • Page 30 Figure 22: The Weather Station batteries and charge controller The controller is protected by a 7.5A fuse (M). Station Installation...

  • Page 31: Working With Weatherlab

    4 Working with WeatherLab 4.1 Install the Software 4.1.1 System Requirements To work with WeatherLab your system should be equipped with the following: Software • Windows 98™ or later • Internet Explorer 5.0™ or later (you can install Internet Explorer 5 when you install WeatherLab, since it ships with the product) Hardware •...
  • Page 32 Note to Windows XP or 2000 users: WeatherLab needs to modify its folder when running. Ask your system administrator for permission to gain access to all files in WeatherLab folder In case auto run is not working, open My Computer and click on the CD drive folder (d: drive in most cases) and double-click on the setup icon, then proceed as above.

  • Page 33: Overview

    WeatherLab is a comprehensive program that provides you with everything you need in order to collect data from the Weather Station, display live and archive data in graphs, tables and meters, analyze data as well as print or export the data to a spreadsheet.
  • Page 34 Note: In wireless mode, transmission is only one way, and there is no way of programming or operating the MultiLogPRO via the software, therefore you need to connect MultiLogPRO to the computer with the supplied communication cable in order to program it. And you must set the system to transmit data by pushing the Enter button on the MultiLogPRO itself.

  • Page 35: Getting Started

    Click Online view If WeatherLab detects data coming from MultiLogPRO, it automatically displays the data in the meters and graphs and your Weather Station is ready and operating. If the meters and graphs remain inactive you must tell WeatherLab to which port...

  • Page 36: Operating Modes

    In this mode the MultiLogPRO does not save data, and can keep logging as long the station is running. Stand-alone experiment Use this mode if you want to operate the Weather Station in a remote outdoor location. Data is saved in the MultiLogPRO.

  • Page 37: Station Settings

    To operate a stand-alone experiment: Connect the Weather Station to a computer and run the WeatherLab. Click Logger on the menu bar, and then click setup to open the Setup dialog. In the operating mode box select Individual experiment. In the Rate box, select the desired rate.

  • Page 38: Setup The Weather Station

    Click OK 4.3.4 Setup the Weather Station Use the Setup dialog to select operating mode, recording rate and saving interval. For more advanced settings see Customize your Weather Station on page 43 To setup your station to the default setup Connect the MultiLogPRO to the PC and turn it on.
  • Page 39 The setup dialog opens with the default setup: Click OK to complete the default setup. To change the setup: Rate Select the desired sampling rate in the Rate drop list Operating mode Select the desired operating mode in the Operating mode drop list Saving Interval Select the time interval between two successive savings (in continuous mode only) in the Saving Interval drop list...

  • Page 40: Start Recording

    Click Logger on the menu bar, and then click Run. Note: Running MultiLogPRO from WeatherLab is available only in cable connection. If you are operating the Weather Station in wireless connection you must run MultiLogPRO from its keypad. 4.3.6 Stop Recording Click Logger on the menu bar, and then click Stop.

  • Page 41: Open Files

    Enter a new name in the File name box. To save the data in a different folder, select a drive and/or folder from the Save in box. Click Save. File Location To select file location: Click File on the menu bar, then click Stored data folder… To change the file location, click Browse and navigate to the desired folder.

  • Page 42: Print

    Click OK 4.3.10 Print Print a graph Click Print on the main toolbar. Select the Graph option. Click Print to open the print dialog box. Click OK. WeatherLab will print exactly what is seen in the graph display. Print a table Click Print on the main toolbar.

  • Page 43: View The Data

    Rain. The rainfall meter displays daily, monthly and yearly bars. You must define the starting month of the yearly rainfall measurements in the Weather Station Settings menu (see on page 32) The daily minimum and maximum temperatures are displayed on the temperature graph.

  • Page 44: Offline View

    There are three options to display the wind direction. The most frequent data, the wind vector or the wind rose: • Click Wind direction frequency display or remove the most frequent direction graph. • Click Wind direction vector remove the direction vector graph. •...

  • Page 45: Display Options

    WeatherLab will load all the data between the dates you selected and display it in graph or table display. Open data that was saved as an Individual Experiment Click Open , on the main toolbar to open the Open dialog box Select a file.

  • Page 46: Four Graph Display

    WeatherLab will display data from the selected time span starting from the date that is currently displayed at the left side of the graph. Click Next 24 hours click Previous 24 hours backward. Rain bars Click Display rain bars 4.4.6 Four Graph Display If you want to view a large number of data series simultaneously you may find it convenient to use the four graph display.

  • Page 47: Zooming And Panning

    To remove the Cursor, click Cursor a second time. 4.4.9 Zooming and Panning The zoom tool To zoom into a specific area Click Zoom to selection diagonally to select the area you want to magnify. Release the mouse button to zoom into the selected area.

  • Page 48: Export Data To Excel

    Select the plot you want to format in the Select plot drop list. Select color in the Color drop list Select Weight in the Weight drop list Click OK. 4.4.11 Export Data to EXCEL In Offline view click Export to Excel Excel spreadsheet.

  • Page 49: Customize Your Weather Station

    4.5 Customize your Weather Station Use the Advanced mode to customize your weather station. In this mode you can change the meter styles and format the graphs. In this mode WeatherLab also enables you to replace the existing sensors with other Fourier sensors connected to the station or define and use other vendors' sensors.

  • Page 50: Use Other Fourier Sensors

    Select line color in the Color drop list Select line weight in the Weight drop list Click OK 4.5.3 Use other Fourier Sensors Connect the sensor to MultiLogPRO Click Logger on the menu bar, then click Setup Select the sensor in the corresponding input box from the drop list Click OK 4.5.4 Define a New Sensor...

  • Page 51: Calibrate Sensor

    The sensor Transfer Function (sensor output voltage changes vs. the sampled phenomenon changes) must be a linear Transfer Function. To define a new sensor: Connect MultiLogPRO to the computer. Select Define New Sensor from the Logger menu to open the Define New Sensor dialog box: Click Add New Sensor.

  • Page 52: Monthly Reports

    Enter a distinct real value in each of the Real Value edit boxes and the corresponding measured values in each of the Measured Value edit boxes (The measured values are the values displayed by WeatherLab when measuring the two real values. Click OK.
  • Page 53 At the bottom of the columns, the lowest temperature recorded during the month and the day on which it occurred are displayed. Heat Deg Days: The number of heating degree-days accumulated on each day At the bottom of the column, the total heating degree-days accumulated during the month is displayed.

  • Page 54: Generating A Monthly Report

    Min <= 0 The number of days on which low temperature was 0° F (-17.8°C) or below. Max Rainfall The maximum rainfall on any single day during the month Days of Rain The number of days on which rainfall exceeded 0.01" (0.2 mm), 0.1" (2 mm), or 1"...

  • Page 55: Report Settings

    4.6.3 Report Settings WeatherLab allows you to change the monthly report parameters. You can change the heat and cool degree-days thresholds, the hot and cold temperature levels and the rainfall levels. To change the report settings: Click Reports on the menu bar, then click Report settings Enter the new parameters, then click OK To restore the defaults parameters click Restore Defaults 4.6.4 Heating &...
  • Page 56 One heating degree–day is the amount of heat required to keep a structure at 65°F when the outside temperature remains one degree below the 65°F threshold for 24 hours. One heating degree–day is also the amount of heat required to keep that structure at 65°F when the temperature remains 24°F below that 65°...

  • Page 57: Toolbar Buttons

    4.7 Toolbar Buttons 4.7.1 Main (Upper) Toolbar Open by Opens station archive date Open Opens individual experiments Print Opens the Print Option dialog box Online view Displays Online screen Offline view Displays Offline screen Scroll back Scrolls back to previous Online screen Auto scroll Scrolls automatically to the Online screen Scroll...

  • Page 58: Offline Graph (Lower) Toolbar

    Wind Displays the wind direction vector graph vector Frequent Displays the most frequent wind direction graph wind Wind rose Displays the wind rose 4.7.3 Offline Graph (Lower) Toolbar Zoom to Activates the Zoom tool selection Activates the Pan tool Returns the graph to full view Auto scale Graph Opens the Graph Properties dialog box...

  • Page 59: Mathematical Calculations

    4.8 Mathematical Calculations Real time Display In real time display the raw data is displayed, except for the wind direction. Wind Direction • Vector – The direction of a vector that is the sum of 11 unit vectors whose directions are the current wind direction and the previous 10 wind directions measurements •...
  • Page 60 Heat Index The Heat index uses the temperature and the relative humidity to determine how hot the air actually "feels." When humidity is low, the apparent temperature will be lower than the air temperature, since perspiration evaporates rapidly to cool the body. However, when humidity is high (i.e., the air is saturated with water vapor) the apparent temperature "feels"...

  • Page 61: Working With Multilogpro

    5 Working with MultiLogPRO 5.1 General 5.1.1 External Connections 1. Sensor inputs 2. PC USB connection 3. PC serial connection 4. Power input (DC 9 – Figure 26: MultiLogPRO external connections Sensor input/output (I/O) sockets marked (I/O-1 I/O-2 I/O-3 and I/O-4): These sockets are used to connect the sensors.
  • Page 62 To connect a sensor to the MultiLogPRO use one of the mini-din cables. Plug one end of the cable into the data logger - arrow facing up, and the other end into the sensor - arrow facing down. If you are using one sensor only connect it to input 1. If you are using two sensors connect them to inputs 1 and 2, and so on.

  • Page 63: Ac/Dc Adaptor

    • Output: Capacitor filtered 9 to 12 VDC, 400mA. • Female plug, center Negative. 5.2 Stand-Alone Operation 5.2.1 Front Panel Layout Backward Button On/Off Buttons – disabled in the Weather Station version Figure 27: MultiLogPRO front panel LCD Display Enter/Run Button Forward Button Escape/Stop...

  • Page 64: Input Modes

    5.2.2 Input Modes MultiLogPRO has two Input Modes. The default mode is Auto ID and the MultiLogPRO is in this mode when turned on for the first time. When using more than 4 sensors, when using VERNIER sensors, or if you’ve defined your own sensor, switch to the 8 inputs mode.

  • Page 65: Quick-Start

    5.2.3 Quick-Start 1. Turn on MultiLogPRO Plug the supplied AC/DC 9 - 12V adaptor into MultiLogPRO (see page 55), then plug it to the mains. You will see the initialization screen. MultiLogPRO performs a brief self-check and displays its status including battery level, and then loads the last setup you used (see page 72).
  • Page 66 The arrow indicates that MultiLogPRO is ready to accept a new sampling rate. If the MultiLogPRO is in 8 input mode you have to select the sensors manually (see page 66). 3. Select Rate Use the Forward desired rate, and then press the Enter button Input –...

  • Page 67: Working With The Multilogpro Menus

    5.2.4 Working with the MultiLogPRO Menus Turning MultiLogPRO on and off In the Weather Station version of MultiLogPRO the on and off buttons are disabled to ensure continuous Weather Station operation. To turn MultiLogPRO on simply plug the Weather Station power cable or the supplied AC/DC adaptor into the 9 -12V socket on the left side of MultiLogPRO Note: Turning MultiLogPRO off will not erase the sample memory.
  • Page 68 2. Main menu display When turned on, MultiLogPRO opens with a system information window and then displays the main menu: MultiLogPRO has 9 menus. Use the Forward or Backward Arrow buttons to highlight a menu and press the Enter button to select it. Then use the Arrow buttons to scan the options.
  • Page 69 4. Menu Icons and commands Start Start recording Press the Enter button to start recording Setup Setup MultiLogPRO in 4 steps: Rate – select recording rate Samples – select the total number of recording points Display – select the way MultiLogPRO will display the data (at a rate of up to 10 samples per second): 1) Numeric 2) Meter...
  • Page 70 Open Use the Forward and Backward Arrow buttons to browse the stored files, press the Enter button to open a file Notes Use the Arrow buttons to browse the notes. Info 1) Number of experiments stored in MultiLogPRO’s internal memory. 2) Memory usage.

  • Page 71: Graphic Display

    Configuration Input Mode – Select Input Mode: Auto ID or 8 inputs Memory clear – Delete the stored data files Distance – Select the range of the Distance sensor: 1.5m or DO2 – Press the Forward arrow button to enter the DO menu Contrast –...

  • Page 72: Measuring Timing Events

    Press the Escape button 5.2.6 Measuring Timing Events MultiLogPRO incorporates an accurate Timer module with resolution of 0.1ms. The timer can measure several types of events triggered by Fourier Systems' photogates: • Time and speed with one photogate • Time and speed between two gates •...
  • Page 73 To perform a timing measurement: Connect one or two photogates to MultiLogPRO Note: MultiLogPRO must be in PC communication mode (see page 72) Use the Forward to the Timing Press Enter to display the timing menu: _ _ _ _ _ T I M I N G _ _ _ _ _ →...
  • Page 74 Press the Forward Press the Backward Press Escape timing menu Press Escape Time and Speed In this mode MultiLogPRO measures time and speed either in one gate or between gates _ _ _ _ _ T I M I N G _ _ _ _ _ →...
  • Page 75 1. Press Enter , then use the arrow buttons to select the card (the body that blocks the gate) width in mm between 0 to 59mm 2. Press Enter twice, then use the Forward arrow button to enter to a timing standby mode 3.
  • Page 76 Time, Speed and Acceleration In this mode MultiLogPRO measures the crossing time at the first gate, the time it takes the body to move from one gate to the second gate and the crossing time at the second gate and returns the time between gates, the average speed and the average acceleration.

  • Page 77: Select Sensors Manually

    5.2.7 Select Sensors Manually You must be in 8 input mode to be able to select the sensors manually (see page 58) In the Main Menu screen, use the arrow buttons to select the setup menu icon Press the Enter button →...

  • Page 78: Load The Last Setup

    When you’ve finished selecting the sensors press the Escape button . The arrow indicator will point to the Rate command and you must complete the setup, as detailed in section 5.2.3. Note: When you turn the MultiLogPRO off it will save the setup for the next session.
  • Page 79 Input Mode Select between Auto ID – automatic sensor identification and 8 inputs – manual sensor selection (See also page 58). The new configuration will be the default mode until the next time you change it. Memory clear Press the Forward arrow button files from the MultiLogPRO.

  • Page 80: Internal Clock And Calendar

    Screen contrast Use the arrow buttons to adjust the LCD screen contrast. Any contrast adjustment will be saved until the next time you change it. Connect to a computer or to a TI calculator Press Forward to connect to a computer or the Backward connect to a TI calculator.

  • Page 81: Choose The Right Setup

    5.2.12 Choose the Right Setup Sampling rate The sampling rate should be determined by the frequency of the phenomenon being sampled. If the phenomenon is periodic, sample at a rate of at least twice the expected frequency. For example, sound recordings should be sampled at the highest sampling rate –...
  • Page 82 To start an experiment using manual data logging, set the RATE to Manual and press the Enter button once to start the data recording, and then press the Enter button each time you want to collect a sample. Sampling Points After you have chosen the sampling rate, choosing the number of points will determine the logging period: Samples / Rate = Logging time.

  • Page 83: Programming Rules And Limitations

    5.2.13 Programming Rules and Limitations The following are some rules and limitations you must take into account when programming the MultiLogPRO, as MultiLogPRO integrates all programming limitations automatically. MultiLogPRO will only allow the programming of settings that comply with the rules below. Sampling points: •...

  • Page 84: Sensor Calibration

    5.3 Sensor Calibration In this chapter you will learn how to increase the MultiLogPRO system accuracy using calibration. Most of the sensors are linear, i.e. the output level of each sensor changes according to the equation: Where: Y - output of the sensor (voltage level changing from 0 to 5V). X - sensor input.

  • Page 85: Ph Temperature Compensation

    Leave the Current sensor plugs open. Cover the Light, Photo-Gate, and Microphone sensors. Insert the pH sensor in a pH-7.0 solution. Unload the Force Transducer. Place the Accelerometer on a stationary surface. Place the Temperature probes in ice water. Place the Pressure sensor in a 1 ATM (1013 mb) Chamber. 5.3.3 pH Temperature Compensation To compensate a pH sensor for temperature changes, plug the temperature sensor into Input 1, and the pH sensor in Input 2.

  • Page 86: The Receiver

    6 The Receiver 6.1 Overview The Receiver is designed to receive wireless data from the Weather Station and send it to the computer. The Receiver is equipped with two LED indicators to show Receiver status and is powered by an AC/DC mains adaptor.

  • Page 87: Connecting The Antenna

    If the Receiver is lying on a tabletop use the hinge to bend the antenna to an upright position. Note: You can also use Fourier Systems' magnet antenna. 6.2.3 Powering the Receiver Connect the supplied AC/DC adaptor to the 9-12V DC input at the bottom of the Receiver (see Figure 29), and then connect it to the mains.

  • Page 88: Led Indicators

    • Connect the type D 9-pin plug to an available serial COM port on your PC To connect a USB communication cable: • Connect the USB type B rectangular plug of the USB communication cable to the USB input at the bottom of the receiver (see Figure 29) •...

  • Page 89: Experiment Notes, The Influence Of Natural Ventilation On Indoor Climate

    7.3 Equipment Setup Procedure Choose a classroom that has at least two openings in two different directions. Ideally, one opening should be orientated to the more frequent wind direction. Locate the Weather Station in the center of the classroom. Experiment Notes...

  • Page 90: Experimental Procedure

    Figure 30: The Weather Station in the classroom. 7.4 Experimental Procedure Leave the doors and windows of the classroom closed for at least an hour before beginning to record data. Open the MultiLogPRO Weather Station program. Click the Start button to start recording.

  • Page 91: Data Analysis

    7.5 Data Analysis Use the cursor and the grid to perform the following analysis. Examine the curves of the climatic parameters and answer the following questions: Until what stage are the curves stable? What are the changes in each curve? At what stage are the changes in the curve most pronounced? Which curves stabilize and when? Calculate the heat stress inside the classroom according to the Heat Stress...

  • Page 92: Further Suggestions

    To what extent can natural ventilation reduce indoor temperatures? How much time is required for ventilation to reduce temperature? D. Which classroom in your school or college is best orientated towards high ventilation? Explain your answer. 7.7 Further Suggestions Conduct simultaneous tests in two classrooms with different opening orientations and compare the results.

  • Page 93: Specifications

    8 Specifications MultiLogPRO version 8.6WTI Data Logger Sensors Range -15 to 110 °C Temperature Humidity 0 to 100% RH Barometric Pressure 800 to 1150mBar Rain Collector 0 to 204 mm Wind Speed 0 to 270 km/h 0 to 360 ° Wind Direction RS-232 PC Host Interface at 19,200 bps Output...
  • Page 94 Receiver Communication Ports RS232 at 19.2Kbps USB at 1.5Mbps Power Supply External: 9-12VDC, minimum 300mA RF Receiver European version: North America version: Antenna SMA connector Supplied with rubber whip antenna (with a hinge) Dimensions 10×9×2.5 cm CE and FCC standard compliance Transmitter Communication Ports RS232 at 19.2Kbps...

  • Page 95: Appendix: Figures

    Figure 19: Connecting the serial communication cable adaptor ...19 Figure 20: Power connections ...22 Figure 21: Communication connections...22 Figure 22: The Weather Station batteries and charge controller ...24 Figure 23: Active online screen...29 Figure 24: Inactive online screen ...29 Figure 25: Open station archive ...38 Figure 26: MultiLogPRO external connections...55...

  • Page 96: Index

    10 Index adaptor · 57 automatic identification · 58 autoscale · 41 Autoscale · 41 cable · 56, 58 Calculation · 53 Calibrate · 45 calibration · 73, 78, 79 Color · 42, 44 configuration · 72 continuous · 76, 77 Continuous mode ·...
  • Page 97 layout · 57 Load Last setup · 72 manual sampling · 75 Measured Value · 46 memory clear · 73 Memory · 77 Menu · 62 meter · 63 Meter · 44 MultiLogPRO · 2, 4 Program · 20 new sensor · 44, 45 Number of samples ·...
  • Page 98 Transfer Function · 45 Units · 35 value · 66 Vernier · 58 Index Weather Station · 31 WeatherLab · 25, 27 Weight · 42, 44 Wind chill · 37, 54 Wind direction · 33, 38, 53 Wind gust · 37, 53 Wind rose ·...

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