Fourier MultiLogPRO User Manual

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Weather Station

User Guide
Fourier Education

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Summary of Contents for Fourier MultiLogPRO

  • Page 1: Weather Station

    Weather Station User Guide Fourier Education...
  • Page 3: Table Of Contents

    Wiring the Weather Station ..............15     A. Wireless Connection ................16     B. Cable Connection .................. 18 4.2.15 Programming MultiLogPRO ..............20     4.2.16 Connecting the Weather Station to the Computer ....... 21     A. Wireless Connection ................21  ...
  • Page 4 5.3.1 Establish Communication with the Weather Station ......29     5.3.2 Operating Modes .................. 30     5.3.3 Start Recording ..................33     5.3.4 Stop Recording ..................33     5.3.5 Saving Data ..................33     5.3.6 Station Settings ..................
  • Page 5     6.2.2 Input Modes ..................62     6.2.3 Quick-Start ................... 63     6.2.4 Working with the MultiLogPRO Menus ..........65     6.2.5 Graphic Display ..................69     6.2.6 Measuring Timing Events ..............70    ...
  • Page 6 8.4  E ................88  XPERIMENTAL ROCEDURE 8.5  D ....................89  NALYSIS 8.6  Q ...................... 89  UESTIONS 8.7  F .................. 90  URTHER UGGESTIONS 9  SPECIFICATIONS ....................91  10  APPENDIX: FIGURES ..................93  11  INDEX 94 ...
  • 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

    3.6 MultiLogPRO 3.2 Mounting Tripod and bag 3.3 Magnet antenna with antenna shelf** 3.4 Wind sensor (Anemometer) Figure 3: MultiLogPRO Figure 1: Anemometer 3.7 Radiation Shield with Temperature and Humidity dual 3.5 Rain Collector mounted on tray sensor mounted inside...
  • Page 9 3.9.4 Transmitter** 3.15 Computer – Receiver 3.9.5 Two sensor cables communication cable: 9 – pin D type plug to stereo 3.9.6 MultiLogPRO – phone plug** transmitter communication 3.16 AC-DC power adaptor for the cable** receiver or MultiLogPRO** 3.9.7 MultiLogPRO and 3.17 WeatherLab software CD...
  • Page 10: Station Installation

    If not the range is reduced considerably and depends on the medium between the transmitter and the receiver Note: In wireless mode, transmission is one way only, from MultiLogPRO to the computer. 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.
  • Page 11: Assembling The Weather Station

    4.2 Assembling the Weather Station 4.2.1 Choosing a Location Try to position your Weather Station as follows: Mount the tripod on a level surface, so that the center pole is vertical. 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...
  • Page 12: Mounting The Tripod

    4.2.2 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. 4.2.3 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 4.2.6 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

    Note: When you let go of the wind cups, they should drop slightly. Spin the wind cups. If they do not spin freely, loosen the setscrew and lower the cups slightly. Repeat until the wind cups spin freely. Attach the Wind Vane: Place the wind vane on the shaft (see Figure 10) Figure 10: Installing the wind vane Slide the wind vane down the shaft as far as it will go...
  • 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 -bolts at the back of the tray over the tripod’s extension tube 4.2.8 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

    4.2.9 Installing the Solar Panel Install the solar panel facing south in the Northern Hemisphere and north in the Southern Hemisphere so it will be exposed to the sun Position the solar panel about 3cm above the lower end of the extension tube (see Figure 16) and tighten the four wing nuts.
  • Page 21: Wiring The Weather Station

    Place one  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 ” lock washer and a ¼ ” wing nut over each screw and tighten the wing nuts slightly Position the box so it sits under the radiation shield, then fasten the wing nuts tightly...
  • 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) Insert the rain sensor cable to the Weather Station main box through the hole at the bottom of the box (A) and connect it, flat side out, to the rain socket (C) on the sensor adaptor (see Figure...
  • Page 23 MultiLogPRO Connect the communication cable (H) from the transmitter to the COMM socket on the left side of MultiLogPRO (see Figure 17) Connect the power cable (I) to the 9 -12V socket on the left side of MultiLogPRO (see Figure 17)
  • Page 24: Cable Connection

    Press the on button in MultiLogPRO's keypad to turn MultiLogPRO on Wait until the main menu is displayed on MultiLogPRO's LCD screen, then press Enter to begin transmitting data Note: in wireless mode, transmission is only one way, and there is no...
  • Page 25 MultiLogPRO Connect the serial communication cable adaptor to the COMM socket on the left side of MultiLogPRO so that the other end of the cable will face the rear side of MultiLogPRO Figure 19: Connecting the serial communication cable adaptor...
  • Page 26: Programming Multilogpro

    MultiLogPRO ships already programmed to the Weather Station default setup. When turned on it uploads the last setup. To operate the Weather Station in the default mode there is no need to program MultiLogPRO. You can, however, change the setup to meet your special needs. You can add or replace sensors, select another sampling rate and choose definite sampling period.
  • 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 4.2.16 instructions Disconnect MultiLogPRO from the Weather Station main box Connect MultiLogPRO to the supplied AC –...
  • Page 28: Cable Connection

    B. Cable Connection Connect the female plug of the 30m serial cable from MultiLogPRO to an available serial COM port on your computer Note: The serial COM ports are usually located at the back of the computer.
  • Page 29: Powering The Weather Station

    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

    5 Working with WeatherLab 5.1 Install the Software 5.1.1 System Requirements To work with WeatherLab your system should be equipped with the following: Software  WeatherLab will support Windows 2000, XP, Vista, 7 (32bit and 64bit)  Internet Explorer 6.0™ or later Hardware ...
  • Page 32 (Needed in case you connect MultiLogPRO or the receiver to the computer via a USB port) Windows XP 1. Connect the MultiLogPRO to a USB port on your PC and turn the unit on. Windows will automatically detect the new device and open the Found New Hardware Wizard.
  • Page 33: Overview

    The most commonly used tools and commands are displayed on three toolbars. Tools that relate to all aspects of the program and tools that control the MultiLogPRO are located in the main (upper) toolbar. Tools specific to the Online and Offline screen are located on the corresponding toolbars at the bottom of the screen.
  • 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

    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. Figure 23: Active online screen If WeatherLab does not detect data coming from MultiLogPRO, it automatically displays offline mode. WeatherLab...
  • Page 36: Operating Modes

    Click Logger on the menu bar, and then click Comm setup to display the communication setup dialog: Select the correct port from the Available Ports drop list, then click Connect 5.3.2 Operating Modes Fourier Systems' Weather Station offers two operating modes: Continuous Run This is the default operating mode.
  • Page 37 The saved data is the average of all samples that were recorded since the previous save, except the wind direction and rainfall. In this mode the MultiLogPRO does not save data, and can keep logging as long the station is running.
  • Page 38 The setup dialog opens with the default setup: Change the operating mode to Continuous or Individual experiment 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...
  • Page 39: Start Recording

    5.3.3 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.
  • Page 40: 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. Click OK.
  • Page 41: 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 Stand-alone experiment mode After logging ends connect the MultiLogPRO to the computer. Click Logger on the menu bar, and then click Download. WeatherLab...
  • Page 42: Open Files

    After downloading is completed, WeatherLab displays the data on the offline graph and prompts to Save as… dialog. 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.
  • Page 43: Print

    Select the desired units Click OK 5.3.10 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 44 Click OK. WeatherLab...
  • Page 45: View The Data

    5.4 View the Data 5.4.1 Display Screens WeatherLab has two display screens. If you want to display the current weather conditions use the Online view. If you want to browse the station archive, to display data over a certain time span and to analyze it use the Offline graph view.
  • Page 46: 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 vector on the lower toolbar to display or remove the direction vector graph.  Click Wind direction frequency on the lower toolbar to display or remove the most frequent direction graph.
  • Page 47: Display Options

    Select a date in the To box. The current date is circled in red Click OK. 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 48: Four Graph Display

    Click Offline on the menu bar, point to Time span and then select the desired time span. WeatherLab will display data from the selected time span starting from the date that is currently displayed at the left side of the graph.
  • Page 49: Zooming And Panning

    To display the cursor, double click on an individual data point or click Cursor on the graph toolbar. You can drag the cursor with the mouse to any other point on the plot, or to another plot altogether. The point coordinates of the selected data recording will appear at the bottom of the graph window.
  • Page 50: Format The Graph

    5.4.10 Format the Graph You can change the data line’s color and width. Click Graph properties on the Lower toolbar to open the Graph properties dialog box 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.
  • Page 51: Customize Your Weather Station

    5.5 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 52 Click Properties next to a sensor input box to open the Sensor Properties dialog: Select meter type in the Meter drop list Select line color in the Color drop list Select line weight in the Weight drop list Click OK WeatherLab...
  • Page 53: Use Other Fourier Sensors

    Select the sensor in the corresponding input box from the drop list Click OK 5.5.4 Define a New Sensor Any additional sensor that you would like to connect to MultiLogPRO must comply with the following restrictions: The sensor’s output must be greater than or equal to 0V and less than or equal to 5V.
  • Page 54: Calibrate Sensor

    WeatherLab adds the new sensor to the sensor list and sends the definitions to MultiLogPRO. 5.5.5 Calibrate Sensor Connect the MultiLogPRO to the PC. Select the Calibrate Sensors option from the Logger menu. Choose a sensor from the Sensor drop list.
  • Page 55: Monthly Reports

    Click OK. The calibrated sensor parameters will be saved, so there is no need to calibrate the MultiLogPRO every time you run the WeatherLab program. To reset to the default calibration for any sensor, select the sensor and click Restore defaults.
  • Page 56 At the bottom of the column, the total heating degree-days accumulated during the month is displayed.  Cool Deg Days: The number of cooling degree-days accumulated on each day At the bottom of the column, the total cooling degree-days accumulated during the month is displayed.
  • Page 57: Generating A Monthly Report

     Days of Rain The number of days on which rainfall exceeded 0.01" (0.2 mm), 0.1" (2 mm), or 1" (20 mm) are displayed 5.6.2 Generating a Monthly Report Click Reports on the menu bar, then click Generate monthly report Select the desired month and year in the Select Date box, then click Generate Report ...
  • Page 58: Heating & Cooling Degree Days

    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 5.6.4 Heating & Cooling Degree Days Although degree-days are most commonly used in agriculture, they are also useful in building design and construction, and in fuel use evaluation.
  • Page 59 required to keep that structure at 65°F when the temperature remains 24°F below that 65° threshold for 1 hour. Likewise, one cooling degree–day is the amount of cooling required to keep a structure at 65°F when the outside temperature remains one degree above the 65°F threshold for 24 hours.
  • Page 60: Toolbar Buttons

    5.7 Toolbar Buttons 5.7.1 Main (Upper) Toolbar Open by Opens station archive date Opens individual experiments Open Opens the Print Option dialog box Print Online view Displays Online screen Offline view Displays Offline screen Scrolls back to previous Online screen Scroll back Scrolls automatically to the Online screen Auto scroll...
  • Page 61: Offline Graph (Lower) Toolbar

    Graph Opens the Graph Properties dialog box properties Wind Displays the wind direction vector graph vector Frequent Displays the most frequent wind direction graph wind Displays the wind rose Wind rose 5.7.3 Offline Graph (Lower) Toolbar Zoom to Activates the Zoom tool selection Activates the Pan tool Returns the graph to full view...
  • Page 62 Exports the opened data to an Excel spreadsheet. Export WeatherLab...
  • Page 63: Mathematical Calculations

    5.8 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 64 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 65: Working With Multilogpro

    3. PC serial connection 4. Power input (DC 9 – Figure 25: 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. Normally, all four sockets can be used simultaneously.
  • Page 66 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 67: Ac/Dc Adaptor

    PC USB communication socket (optional). Connect the USB Type B plug to the MultiLogPRO and the USB Type A plug to the PC (you need to install USB driver). External DC power supply socket: Plug in an AC/DC 9 - 12V adaptor to turn MultiLogPRO on.
  • Page 68: 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 69: Quick-Start

    (see page 75). Wait until you see the Main Menu screen: 2. Plug in the sensors Start with the first input on the right. If MultiLogPRO is in Auto ID mode (the default mode) it will display the setup menu and will identify the sensors you’ve plugged in.
  • Page 70 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 70). 3. Select Rate Use the Forward and Backward arrow buttons to select the desired rate, and then press the Enter button Input –...
  • Page 71: Working With The Multilogpro Menus

    6.2.4 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 72 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 73 Setup 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 Displays the sensor values and the sample number.
  • Page 74 Display experiment notes and instructions Notes Use the Arrow buttons to browse the notes. Display system information: Info 1) Number of experiments stored in MultiLogPRO’s internal memory. 2) Memory usage. 3) MultiLogPRO version. 4) Battery level (unplug any sensor and external power supply) 5) Current date and time.
  • Page 75: Graphic Display

    Backward arrow button to connect to TI calculator 6.2.5 Graphic Display MultiLogPRO will automatically use a graphic display in three cases: If the recording rate is 10/s or less and you selected Graphic Display in the setup menu...
  • Page 76: Measuring Timing Events

    Use the Forward and Backward arrow buttons to move the cursor. MultiLogPRO displays the point coordinates at the bottom of the graph. If there is more then one sensor, press the Enter button move the cursor to another plot on the graph.
  • Page 77 2 0 c m S t a r t ( > ) The arrow indicates that MultiLogPRO is ready to accept the timing mode Use the arrow buttons to select the desired timing mode: Stopwatch, Time Speed or Time Speed Acc...
  • Page 78 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 79 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 80: Select Sensors Manually

    Timing begins each time a body enters the first photogate (input 1) and ends when leaving the second photogate (input 2). MultiLogPRO then displays the elapsed time between entering the gates and the body's average velocity and...
  • Page 81: Load The Last Setup

    . The arrow indicator will point to the Rate command and you must complete the setup, as detailed in section 6.2.3. Note: When you turn the MultiLogPRO off it will save the setup for the next session. 6.2.8 Load the Last Setup...
  • Page 82: Configure Your Multilogpro

    When you turn MultiLogPRO on, it automatically loads the last setup. 6.2.9 Configure Your MultiLogPRO Use the System configuration menu to select the Input Mode, to clear the MultiLogPRO’s memory, to change the screen contrast, to configure your Distance sensor or to calibrate the DO sensor.
  • Page 83: Internal Clock And Calendar

    Use the arrow buttons to select between 0, 500, 1000, 1500, 2000, 2500, 3000 and 3500 ft and press the Enter button to confirm. MultiLogPRO will display the calculated upper limit of the calibrated range and will exit the DO calibration screen.
  • Page 84: Clear The Memory

    M e m f u l l , c l e a r = ( > ) Press the Forward arrow button to clear the memory. In order to clear the MultiLogPRO’s memory when it is not full, use the Memory clear command from the Configuration menu (see page 76). 6.2.12 Choose the Right Setup...
  • Page 85 (Note: During the experiment NO CHANGES can be made to the MultiLogPRO’s configuration). To start an experiment using manual data logging, set the RATE to Manual and...
  • Page 86 To operate in Continuous mode select RATE equal to or less than 100/s and SAMPLES = Continuous. You can also select Continuous mode directly from the WeatherLab software. Note: MultiLogPRO must be set to a display mode other than graphic to enable the Continuous mode. MultiLogPRO...
  • Page 87: Programming Rules And Limitations

    6.2.13 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 88: Sensor Calibration

    6.3 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).
  • Page 89: Ph Temperature Compensation

    Place the Pressure sensor in a 1 ATM (1013 mb) Chamber. 6.3.3 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. MultiLogPRO will then display the compensated pH value. 6.3.4 DO2 Calibration...
  • Page 90: The Receiver

    7 The Receiver 7.1 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. 7.2 Getting Started 7.2.1 Locating the Receiver Locate the Receiver near the computer.
  • Page 91: Connecting The Antenna

    Whip Antenna Antenna socket RF LED Data LED indicator indicator 9 – 12V DC input Serial socket socket Figure 28: The Receiver layout 7.2.2 Connecting the Antenna Screw the supplied whip antenna to the SMA antenna socket at the top of the Receiver (see Figure 28).
  • Page 92: 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 28) ...
  • Page 93: Experiment Notes, The Influence Of Natural Ventilation On Indoor Climate

    In this experiment, the influence of natural ventilation will be examined. 8.2 Equipment MultiLogPRO Weather Station 8.3 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.
  • Page 94: 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. Note: Although there is no wind flow in the first half hour the wind direction sensor will record the direction that it is facing as a constant number.
  • Page 95: Data Analysis

    8.5 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 96: 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. 8.7 Further Suggestions Conduct simultaneous tests in two classrooms with different opening orientations and compare the results.
  • Page 97: Specifications

    9 Specifications MultiLogPRO version 8.6WTI or Higher Data Logger Sensors Range Sensitivity Accuracy -15 to 110 C 2% Temperature 0.25C Humidity 0 to 100% RH 0.4% ±2% Barometric Pressure 800 to 1150mBar 1mBar ±15mB 0.2 mm Rain Collector 0 to 204 mm 0.2 mm...
  • Page 98 USB at 1.5Mbps Power Supply External: 9-12VDC, minimum 300mA RF Receiver European version: Frequency: 433.92MHz Type approved to ETS 300-220 Usable range: to 300m (75m indoors) North America version: Frequency: 914.5MHz Usable range: to 120m (30m indoors) Antenna SMA connector Supplied with rubber whip antenna (with a hinge) Dimensions 1092.5 cm...
  • Page 99: 10  Appendix: Figures

    Figure 16: Mounting the Weather Station ..............13  Figure 17: Wiring the Weather Station main box ............16  Figure 18: MultiLogPRO inside the Weather Station main box ........17  Figure 19: Connecting the serial communication cable adaptor ........ 19  Figure 20: Power connections ................... 22 ...
  • Page 100: 11  Index

    11 Index Do2 · 77 Download · 35 A  adaptor · 61 E  automatic identification · 62 autoscale · 43 Enter · 66 Autoscale · 43 Escape · 66 Excel · 27, 44, 56 Experiment · 87 C  Export · 44 external DC power ·...
  • Page 101 Menu · 66 range · 77 meter · 67 Rate · 32, 34, 64, 67, 78, 81 Meter · 46 Real Value · 48 MultiLogPRO · 2, 4 Recording Program · 20 Data · 65 Time · 64, 67 N ...
  • Page 102 Start · 33, 65, 67, 88 Vernier · 62 Station settings · 33, 34 Stop · 33, 65, 66 W  system configuration · 76 System Requirements · 25 Weather Station · 34 WeatherLab · 25, 27 Weight · 44, 46 T ...

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