Rev.
054-139 - Rev. 1 2150GR Ground Penetrating Radar INDEX 1. INTRODUCTION................................................................................................................... 1 1.1 Scope................................................................................................................................ 2 1.2 Trademarks...................................................................................................................... 2 1.3 Acronyms and Definitions ..................
054-139 - Rev. 1 2150GR Ground Penetrating Radar FIGURES INDEX FIG. 3-1 – OVERVIEW OF THE 2150GR AND ITS COMPONENTS .........................................................4 FIG. 3-2 – THE CONTROL UNIT ...................................................................................................................5 FIG. 3-3 – THE ANTENNA-CONTROL UNIT CONNECTION CABLE.....................................................5 FIG. 3-4 – THE INVERTED NETWORK CABLE .............................................
054-139 - Rev. 1 2150GR Ground Penetrating Radar 1. INTRODUCTION The 2150GR is an innovative system capable of detecting tubes and both metallic and non metallic cables buried underground. Following standard radar principles, the 2150GR uses a high performance electromagnetic sensor equipped with electromagnetic transmitters and receivers. The groundbreaking control unit is extremely compact and lightweight at just 2.2 lb (1kg), and is compatible with 700MHz and 250MHz frequency antennas.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 1.1 Scope This document describes how to use the 2150GR Ground Penetrating Radar, including hardware and software components. 1.2 Trademarks WINDOWS 2000 PROFESSIONAL Microsoft Corporation /WINDOWS XP PROFESSIONAL 2150GR 1.3 Acronyms and Definitions 1.3.1 Acronyms 2150GR: single antenna pipe detection system. 1.3.2 Definitions Antenna trolley: a unit that holds all the equipment necessary for acquisition in the field.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 2. OVERVIEW 2.1 How to use this manual This 2150GR user manual is subdivided as follows: • Chap. 1: Introduction • Chap. 2: Overview • Chap. 3: User guide • Chap. 4: Assembly procedure • Chap. 5: The acquisition software • Chap. 6: Work procedure flowchart • Chap. 7: How to use the 2150GR 2.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 3. USER GUIDE 3.1 Description of the hardware The 2150GR consists of the following parts (see Fig. 3-1): • Control unit (1) • Two wheeled trolley used to move the system (2) • Power cable (3) • Inverted network cable (4) • Antenna-Control Unit connection cable (5) • ATS 250 or 700 IDS Antenna (6) • Position sensor (7) • Position sensor connection cable (not shown) • 12V lead battery (see Fig.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 3.1.1 The 2150GR Control Unit The control unit has the following main functions: ¾ To communicate with the antenna ¾ To communicate with the notebook computer ¾ To pilot the position sensor The control unit (Fig. 3-2) is fitted with the following connection ports: ¾ Power supply port (1): the power supply cable (Fig. 3.5) connects the battery to the Control Unit.
054-139 - Rev. 1 2150GR Ground Penetrating Radar GENERAL CHARACTERISTICS OF THE CONTROL UNIT NUMBER OF CONNECTABLE ANTENNAS 1 VOLTAGE 12V +/- 10% ENVIRONMENT CHARACTERISTICS IP65 PANEL CONNECTORS LAN, BATTERY, ANT.1, WHEEL ABSORBED POWER 8W (1 antenna) OPERATING TEMPERATURE 14°F-104°F (-10 / +40 °C) Tab. 3-1 – Control Unit Characteristics 3.1.2 The Antenna The 2150GR system can be used with one of the following antennas (see Fig. 3-6): • ATS 250 for high signal penetration.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 3.1.3 Power supply The Control Unit is powered by : ¾ A lead 12V, 12Ah battery (see Fig 3-7). Fig. 3-7 – Lead Battery 3.1.3.1 Charge level and battery replacement When the spy light is lit next to the power supply port on the radar, this indicates that the system is powered: if it is not lit, this means that either the cable is not connected correctly or that the battery needs recharged (less than 10V). The battery has a useful life of around 12 hours.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 4. ASSEMBLY PROCEDURE 4.1 How to assemble the trolley Follow the procedure below to assemble the trolley: ¾ Remove the trolley from its bag (Fig. 4-1). Fig.
054-139 - Rev. 1 2150GR Ground Penetrating Radar Fig. 4-2 – Opening the Trolley Fig. 4-3 – Handle blocking mechanism ¾ Open the trolley from the folded position to the upright position by gripping the handle (1) shown in Fig. 4-2 and lifting until the two cylindrical pins (2) click into their supports (3). ¾ Unlock the two tension levers (1) by rotating them outwards and pull the handle (2) upwards, to adjust it as desired (Fig. 4-3). Lock the tension levers when desired height is set.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 4.2 Connecting the cables 4.2.1 Connecting the battery Fig. 4-4 – Battery and cabling support ¾ Place the battery in the battery bag and place the bag on the PVC base plate. Secure the bag to the support with the strap provided. ¾ Connect one end of the power supply cable to the BATTERY port on the Control Unit (1). Connect the opposite end to the white connector on the battery (2), as shown in Fig. 4-4.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 4.2.2 Mounting the antenna and connecting its cables Fig. 4-5 – Connecting the Antenna ¾ Place the antenna under the trolley (Fig. 4-5). ¾ Insert the two trolley pins into the antenna mounts as shown and secure with the nuts provided. Fig. 4-6 – Antenna-radar connection ¾ Connect one end of the antenna-control unit connection cable to the antenna port (2). Connect the opposite end to the ANT.1 port (1) on the Control Unit (Fig. 4-6).
054-139 - Rev. 1 2150GR Ground Penetrating Radar 4.2.3 Mounting the PC notebook ¾ The notebook PC is secured to the upper base plate on the trolley with nylon hook and pile strips (shown in Fig. 4-7, left). ¾ Once the notebook is fixed on the plate, connect one end of the inverted network cable to the PC network port (1). Connect the opposite end to the waterproof black connector to the radar port (2) on the control unit. Fig.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 4.2.4 Connecting the position sensor Fig. 4-8 – Connecting the position sensor ¾ The system position sensor is situated inside one of the trolley wheels and turns in unison with it (Fig. 4-8). The sensor measures all movements of the 2150GR from its starting point, which coincides with the system centerpoint (which is the center of the antenna). ¾ The sensor cable (2) is connected to the WHEEL port (1) on the Control Unit.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 4.2.5 Removing the trolley wheels Fig. 4-9 – Removing the trolley wheels ¾ If the wheels need to be removed when storing the 2150GR, press the black button labeled PRESS (shown) to the side of the wheel and pull the wheel outward. ¾ To reinsert the wheel onto the axis, it is sufficient to push it into the support until the block clicks into place (Fig. 4-9). ! Remember to disconnect all cables before putting the trolley back into its storage bag.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 5. THE ACQUISITION SOFTWARE 5.1 Basic characteristics of the notebook PC If you decide to use a different notebook PC than the one suggested by Subsite (Panasonic CF-18), it must have the following characteristics: ¾ Pentium processor > 1.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 5.2 Software installation and configuration ! NOTE The 2150GR is shipped with GPR software already installed and configured. If it is necessary to reinstall the software, follow the steps below. Copy the contents of the 2150GR file from the installation support into the: C:\ directory. Create a shortcut of the 2150GR.exe file present in the C:\2150GR\ directory. Before using the 2150GR software, you have to configure the notebook network card.
054-139 - Rev. 1 2150GR Ground Penetrating Radar ¾ The window shown in Fig. 5-2 appears, in which you have to select Use the following IP address. ¾ Write the following number in the IP address field: 192 . 168 . 200 . 150. ¾ Write the following number in the Subnet mask field: 255 . 255 . 255 . 0. ¾ Press OK to confirm the changes Fig.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 5.3 The operational phases 5.3.1 Running the software The 2150GR software permits data to be acquired, saved and viewed directly in the field. Once the notebook has been switched on, the 2150GR.exe program has to be launched by clicking on the icon shown in Fig. 5-3. Once the icon has been clicked, the software initializing window automatically opens (Fig. 5-4). Fig. 5-3 – Acquisition software icon Fig.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 5.3.2 Pre-acquisition commands ¾ Press the on the acquired data. button to start calibrating the processing parameters used ¾ Push the trolley a few meters then press the parameters (see Fig. 5-5). button to save the Fig. 5-5 – Start calibration ! NOTE Calibration can be repeated as often as required during a survey. It is most useful whenever the ground conditions change, i.e. from asphalt to concrete, or from concrete to grass.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 5.3.3 Commands used during acquisition Start data acquisition using the window shown in Fig. 5-6. Fig. 5-6 – Acquisition selection window ¾ Press the button to go back to the pre-acquisition phase. ¾ Press the button to close the software. ¾ To start a new acquisition, write a name in the text box then press the button next to it. This will open the window shown in Fig. 5-7. Fig.
054-139 - Rev. 1 2150GR Ground Penetrating Radar Once a name has been given to a new survey, a data file is automatically created with the selected name in the C:\2150GR\Mission\ directory. All files containing acquired data will be automatically stored in this file . ! NOTE ¾ Press the button to stop and save the acquisition. The window shown in Fig. 5-6 then reappears. ¾ Click the icon below to write notes on the scan in the text box underneath.
054-139 - Rev. 1 2150GR Ground Penetrating Radar ¾ If you note the appearance of a hyperbola on the screen during acquisition (generated by a buried pipe or cable), stop, then move the trolley in the opposite direction. This temporarily suspends acquisition and produces a vertical line on the data screen (see Fig. 5-9). Fig.
054-139 - Rev. 1 2150GR Ground Penetrating Radar HORIZONTAL CURSOR Fig. 5-11 – UP/DOWN function ¾ Press the button to mark pipe and its position on the radar screen map. The window shown in Fig. 5-12 appears automatically. The icons represent some types of pipe (from the top left clockwise are Gas, Electric Cable, Telephone Cable, Water Pipe, Unknown Pipe, Sewage Pipe, Public Illumination cable, Traffic Light cable (Fig. 5-12). Fig.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 5.3.4 Depth calibration ¾ Press the button to activate a window where you can write the exact depth of the pipe or cable (if it is known) from another source such, as technical maps or from opening manhole covers. ¾ Otherwise, press the button to activate the following window, and Select the correct propagation speed by using the adjust the white-line curve to the shape of the hyperbola.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 5.3.5 Post-acquisition commands The following commands can be activated from the ACQUISITION SELECTION window (see Fig. 5-6): 1. 2. 3. 4. ¾ Any of the surveys saved on the computer can be deleted by pressing the button; select the survey name and press the delete button, the software requests you to confirm your choice (Fig. 5-13). Fig.
054-139 - Rev. 1 2150GR Ground Penetrating Radar ¾ Press the button to change the name of a selected survey; write the new name then press the OK button to confirm the change (Fig. 5-14). Fig. 5-14 – How to rename a survey ¾ Press the scans in it. button to reload the last survey and continue performing ¾ Press the button to review all the scans contained in the selected survey. The first radar map of the selected survey will appear, and more markers can be added if required.
054-139 - Rev. 1 2150GR Ground Penetrating Radar ¾ Press: • to move the review line about 1” (2.5 cm) to the right; • to move the review line about 20” (50 cm) to the right; • to move the review line about 1” (2.5 cm) to the left; • to move the review line about 20” (50 cm) to the left. ¾ The lower tool bar can also be used to select and reload : • previous scans by selecting the • subsequent scans by pressing the button .
054-139 - Rev. 1 2150GR Ground Penetrating Radar Fig. 5-17 – Final printout of a radar map ¾ Press the button to close the program.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 5.4 Error messages Error messages found in the program are listed below (in italics) followed by their solutions: ¾ Network error. Retry or check hardware! Check that the network cable is connected properly to the PC and the control unit. Try restarting the program. ¾ New depth must be > 0. Please insert new value to continue ¾ New depth must be > 0. Unable to set the depth ¾ New depth missing.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 6.
054-139 - Rev. 1 2150GR Ground Penetrating Radar 7. HOW TO USE THE 2150GR The main targets when performing utilities investigations with the 2150GR consist of either extended structures (such as an interface between layers, pipes parallel to the investigation direction etc.) or quite small structures (such as pipes perpendicular to the investigation direction, cavities and rocks etc.). Fig.
054-139 - Rev. 1 2150GR Ground Penetrating Radar o For equal propagation speed, depth and type of target, the hyperbola will be wider for geometrically larger targets (for examples for wider diameter pipes). When interpreting the maps, it is a good idea to remember that the width of a hyperbola does not just depend on the geometrical size and shape of the target. Fig.
054-139 - Rev. 1 2150GR Ground Penetrating Radar There are no definitive criteria for interpreting diagrams and often you have to depend on experience. In any case, it is best to collect the largest possible amount of information for an area under investigation, and use it to help choose the most appropriate equipment and investigation parameters. To conclude, we have an example below of a real situation featuring two pipes side by side (Fig. 7-3).
054-139 - Rev. 1 2150GR Ground Penetrating Radar APPENDIX A - THE PRELIMINARY INVESTIGATION The first fundamental phase for any field survey consists in the preliminary investigation: its scope is to acquire all the necessary information for the logistics of the operation, taking into account the objectives to be performed.
054-139 - Rev. 1 2150GR Ground Penetrating Radar APPENDIX C - OPENING MANHOLES This phase is normally performed once the acquisition phase has been completed, and consists in opening the manholes present in the investigated site.
054-139 - Rev. 1 2150GR Ground Penetrating Radar APPENDIX E - CLEANING INSTRUCTIONS ! WARNING Before cleaning any external parts of the apparatus, make sure that all cables have been disconnected, including the power supply cable. If a damp cloth is used, make sure it is not too wet, to avoid any damage to the electrical components of the equipment. Wait until the equipment is totally dry before reconnecting the cables. The 2150GR should be cleaned periodically using a damp cloth.
