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1. Figure 7 4 Available Scan Modes voltage between the Voltage Electrodes whereas a passive measurement is only detecting natural voltage without any power injection OKM GmbH www okmmetaldetectors com Conducting a measurement 51 Here are the main differences of the mentioned scan modes e Active Scan Accurate This is the standard and most recommended operating mode for the GeoSeeker It is the most accurate and complete scan mode Power is injected into the underground and all 4 electrodes are being moved from scan point to scan point The Power Electrodes reference point is always the current scan point You may utilize the complete depth range between 5 and 250 m 16 ft 820 ft e Active Scan Quick This is a quick version of the accurate scan mode with some limitations concerning depth and field dimensions Power is injected into the underground but only the Voltage Electrodes are being moved from scan point to scan point The Power Electrodes reference point is always the center of the scan field You may utilize a depth range between 50 and 250 m 33 ft 820 ft e Passive Scan This is the quickest scan mode without injecting power into the ground and most useful for sloping areas where flowing water is expected underground This scan mode is not intended for cavity detection There is no depth range available For the active scan modes there are additional scan profi
2. 1 2 4 Voltage Power Supply The power supply should not be outside the indicated range of values Use only approved chargers batteries and rechargeable batteries which are included in the scope of delivery Only use the recommended type of batteries or rechargeable batteries as indicated in this user s manual 1 2 5 Maintenance and Services In this section you will learn how to maintain your measuring instrument with all of its included accessories This will keep it in good condition a long time and you will be able to get good measuring results The following list indicates what you absolutely should avoid e penetrating water e strong dirt and dust deposits e hard impacts e strong magnetic fields e strong microwave fields e high and long lasting heat effect To clean your device please use a dry soft cloth To avoid any damage you should always transport the device and accessories in the appropriate carrying cases Prior to using your GeoSeeker please be sure that all batteries and accumulators are fully charged Also allow the batteries to completely discharge before recharging them regardless if you are working with the external battery or with internal accumulators This way your batteries will have a long and durable life 1 2 6 Danger of Explosion during Excavation Unfortunately the last two world wars also made the ground in many places of the world a potentially explosive scrap heap A host of those lethal relics a
3. OKM GeoSeeker New Measurement Field Dimensions a R gill R Resolution 5m aD RAA ER W EE i L Field Length 30 m W Field Width 45 m NY a xn Ee Previous Start Measurement 4 N D LI im Figure 5 8 New Measurement Field dimensions This step is necessary for all active scan modes as well as the passive scan mode First you select your resolution which is defined as the distance between your scan points Afterwards you adjust the length and width of your scan field This information is also very important to physically mark your scan points outside Detailed information concerning the preparation of your scan field you can read in chapter 7 Conducting a measurement on page 47 OKM GmbH www okmmetaldetectors com Android Application 33 Finally you will see the screen from figure 5 9 where you can see how to set up all your electrodes Just read the information shown on this screen and prepare all your equipment according to it OKM GeoSeeker Active Scan Accurate Complete Measurement 30 x 45m 30 150m Menu Controller 0 0v 0 0 560 0 Status information RE EE Continue Continue Button Set up the current measure point Voltage mV Measure values Power mA Resistivity Om A A 5 30m Fam EE B 3 3m NW f SE EE Cable markers D E je Ve Displacement D 30m First Measure Point pat
4. OKM GmbH www okmmetaldetectors com Conducting a measurement 49 e Additionally it will be a good idea to observe the present vegetation since special plants can indicate the presence of underground water deposits There also might be areas with more plants or greener plants than others 7 2 General Measurement Procedure Before starting any measurement you have to divide your scan field into single scan points You have to choose a consistent distance resolution between your scan points according to your preferred accuracy The more scan points the better your final scan image but the more time you have to invest into your measurement Later during your measurement you will collect measure values at each of those scan points from certain depths It is a good practice to mark each of that scan points with some kind of marker flag stick color point stone etc to speed up the final measurement So you have to measure the distances between the scan points only once during the preparation of your scan field and you can move your equipment from point to point easily afterwards In figure 7 2 you can see an exemplary scan field with 3 x 3 scan points The lengthwise as well as the crosswise distance between the scan points is all the same Figure 7 2 Dividing the field into scan points and setting up markers At each of this marked scan points electrical power is injected into the ground using the two Power Electrodes e
5. Power Electrodes and 2 electrodes with a black socket Voltage Electrodes Handle Socket Figure 4 1 Elements of the electrodes Handle Shaft Use the handle to push the electrode s shaft into the underground as deep as possible You may use a hammer to do so The shaft is made of stainless steel to be robust against moisture and weird soil conditions Socket The socket is used to connect the cables whereas the red socket is used for the power injection and the black socket is used for measuring the voltage 4 2 Cable Drums There are 4 cable drums on the whole 2 big ones and 2 small ones The big cable drums referred to as Power Cable Drums are used to connect the Power Electrodes electrodes with red socket with the Power Box whereas the small ones referred to as Voltage Cable Drums are used to connect the Voltage Electrodes electrodes with black socket with the Controller 4 2 1 Power Cable Drums 290 mm The two larger cable drums also called Power Cable Drums are the link between the Power Box and the Power Electrodes OKM GmbH www okmmetaldetectors com Control elements 21 Marker Plug Connector plug into Power Box Socket Connector for Extension Cable Figure 4 2 Elements of the power cable drums Socket Connector for Extension Cable This socket is used to connect the extension cable and link it to the power electrode Plug Connector P
6. additional steps to set up the depth range and field dimensions of your new measurement e Continue Measurement If you have already started a new measurement some time ago but not finished you may select it here and continue the scan s View Measurement You can select a finished measurement or even an unfinished one to view its graphical 3d representation e Activation Use this option to renew the activation of your Controller and your Power Box Without a proper activation you will not be able to use the GeoSeeker properly After purchasing the complete package with Tablet PC everything is already set up properly and ready to go e Support Information On this screen you will find the contact details for OKM as well as the current firmware version of your equipment 5 2 1 New Measurement This is the option of your choice if you are going to create a new measurement There are several options to choose and depending on your preferred scan mode the creation process is slightly different as shown in figure 5 3 OKM GmbH www okmmetaldetectors com 20 Android Application ACTIVE SCAN Project Title Notes Scan Mode Scan Profile Depth Range Field Dimensions Figure 5 3 New Measurement Creation process After selecting the option New Measurement you have to enter a specific project title Additionally you may add some further notes concerning your current project e g workers involved GPS
7. cccceceeeeecececececececececeesesesessesececeecestegeegeeeessessess 41 Figure 6 3 Tablet PC mounted to Controller ANNER 42 Figure 6 4 Voltage Cable Drums mounted to Controller hh keke k k k 42 Figure 6 5 Connecting the Power Box Charger E E keke ee keke kek k kek Kek KK K K k KK Ke KK KEKE Ke e 43 Belli d ya dn hi ee W E 44 Pigure 6 7 Entering WiFI password EE 45 Figure 7 1 Detection of thick objects is better than flat objects ck kk kk k 48 Figure 7 2 Dividing the field into scan points and Setting up markers hMh kk kk k 49 Figure 7 3 Power injection depth depends on electrodes distance ccecccsecececececececeseeeeeeeeeseeeeeees 50 Fig re 7 4 Available Scan ee E 50 Figure 7 5 Instruction screen for setting up a measurement ssessesesseesesseseesesseesessrsesseseesseseeseessseees SE Figure 7 6 Arrangement of electrodes during Active Scan Accurate K K EE kk k ka 59 Figure 7 7 Arrangement of electrodes during Active Scan QUICK kek k k ke 59 Figure 7 8 Arrangement of electrodes during Passive can 60 Figure 8 1 Measure values as indicated during a measurement cee kk k 62 Figure 8 2 Graphical 3d representation of an ACTIVE SCAN ENNEN 63 Figure 8 3 Graphical 3d representation Of a PASSIVE Scan 64 Figure 8 4 Example of a passive measurement flowing water ce kk kek k k 65 OKM GmbH
8. 2x 2m 5 10m 11 Jul 2014 09 27 05 2014 07 11 09 27 05 geo 100 EH iy test140709 Active Scan Accurate Complete Measurement 4x 4m 5 15m 9 Jul 2014 16 46 04 2014 07 09 04 46 04 geo 33 sand elektroden tief Active Scan Accurate Single Measurement 0x 0m 50 250m 19 Jun 2014 12 21 54 2014 06 19 12 21 54 geo 100 r sandkasten mit wasser Active Scan Accurate Single Measurement 0x 0m 50 250m 19 Jun 2014 11 59 55 2014 06 19 11 59 55 geo 100 r test sandkasten Active Scan Accurate Single Measurement 0 x 0m 50 250m 19 Jun 2014 11 42 12 2014 06 19 11 42 12 geo 100 Figure 5 11 View Measurement List of files Now find your After selecting a specific measurement you will see its graphical 3d representation Opening the measurement can take some time because some additional calculations are processed After it has been loaded you will see something like shown in figure 5 12 If you tap a long time on one of those entries a context menu is opening where you can select one of the following options e View Select this action to view the 3d representation of the unfinished measurement e Delete Select this action to delete the selected measurement Perspective View Front View Right View Top View OKM GeoSeeker Active Scan Accurate Complete Measurement 4x 4m 5 50m Figure 5 12 View Measurement 3d represe
9. continue with entering the field dimensions OKM GeoSeeker New Measurement Scan Profile Single Measurement This option is used to measure a depth profile on a single point only Lengthwise Measurement This option is used to measure a lengthwise depth profile as a single line Crosswise Measurement This option is used to measure a crosswise depth profile as a single line Previous Next Figure 5 6 New Measurement Scan profile After selecting an active scan mode there are following scan profiles available e Complete Measurement e Single Measurement OKM GmbH www okmmetaldetectors com 32 Android Application e Lengthwise Measurement e Crosswise Measurement First tap on the scan profile you want to use and then tap onto Next Now you have to select the depth range starting depth and ending depth of your measurement If you can limit your depth to a very small range your measurement will be finished much faster than measuring all available depth steps OKM GeoSeeker New Measurement Depth Range a X222 ZE D1 Start Depth 30m See ee D2 End Depth 150 m TTT Previous Next Pa Figure 5 7 New Measurement Depth settings After you have entered your preferred depth range information tap on Next The last step of setting up a new measurement is to adjust the field dimensions field length and width as well as the distance between the scan points resolution
10. coordinates ground conditions field information etc OKM GeoSeeker New Measurement Project Title OKM Notes and Remarks Weiter Figure 5 4 New Measurement Project title notes You cannot continue without entering any title This project title should be unique so you can easily browse your measurement out of others After typing your title tap on Next to select your preferred scan mode OKM GmbH www okmmetaldetectors com Android Application 31 OKM GeoSeeker New Measurement Scan Mode Active S i can Quick a Leai This option is used to speed up the measurement but will result in less accurancy Furthermore you have several restrictions in depth and dimension Passive Scan This option is useful if you expect floating water under the ground This mode is typically used if the terrain is very sloping Previous Next Figure 5 5 New Measurement Scan mode Now you can select one of the following scan modes e Active Scan Accurate e Active Scan Quick e Passive Scan First tap on the scan mode you want to use and then tap onto Next Further explanations concerning the scan mode you will find in chapter 7 Conducting a measurement on page 47 If you have selected one of the active scan modes you have to select a certain scan profile which sets up a basic scanning theme In case you have selected the passive scan mode this step will be skipped and you will
11. section Operating modes and functionality on page 29 5 1 Download amp Installation If you want to reinstall the application after a factory reset or you want to install it to another Tablet PC you have to download the application from Google Play first Find the Play Store application on the Tablet PC where you are going to install the GeoSeeker application and tap on it If you don t have any Google Account so far you must create one to be able to download the GeoSeeker application Simply follow the instructions on your Tablet PC to download and install the application APPS WIDGETS Figure 5 1 Installation of the application via Google Play Store After installation you have to activate both the Controller and the Power Box Detailed information about the activation process you can read in chapter 5 2 4 Activation on page 36 In case of any troubles please contact your local dealer for additional help OKM GmbH www okmmetaldetectors com Android Application 29 5 2 Operating modes and functionality After starting your GeoSeeker application you will see the main menu as shown in figure 5 2 OKM GeoSeeker A Ti New Measurement Continue Measurement View Measurement Activation Support Information Figure 5 2 Application s main menu The following options are available s New Measurement Select this option if you want to conduct a new measurement You will have to follow some
12. the current scan point if in Active Scan Accurate b in the center of your scan field if in Active Scan Quick 2 Connect the plug of the first Power Cable Drum into the appropriate socket of the Power Box 3 Unroll the cable of the Power Cable Drum by moving away from the Power Box until you reach the cable marker indicated by the Android application of your Tablet PC 4 Put the Power Electrode next to the cable marker into the ground as deep as possible Use a hammer if necessary OKM GmbH www okmmetaldetectors com Conducting a measurement 57 5 Use the Extension Cable to connect the Power Drum with the Power Electrode 6 Repeat steps 2 to 5 for the second Power Cable Drum and Electrode 7 3 3 Setting up the voltage measurement The voltage measurement equipment consists of the Controller with Voltage Cable Drums as well as the Voltage Electrodes All those parts are equipped with black plugs or black sockets This Voltage Line is used to measure the natural voltage passive scan or the generated potential difference active scan of the Power Line 1 Place the Controller at the current scan point 2 Unroll the cable of the first Voltage Cable Drum completely by laying it out in a straight line OKM GmbH www okmmetaldetectors com 58 Conducting a measurement 3 After reaching the end make a U turn and bring back the cable to the cable marker indicated b
13. www okmmetaldetectors com Preparing and maintaining the equipment 45 Signal strength Excellent Security WPA2 PSK Password GeoSeeker Show password Show advanced options Figure 6 7 Entering Wi Fi password 5 Now the connection to the Controller is established and you are ready to conduct a new measurement This Wi Fi connection is now stored on your Tablet PC and will reestablish automatically if it is in range unless you connect to another network manually or the Tablet PC is connecting to any other public network OKM GmbH www okmmetaldetectors com A oT EU 2 7 Conducting a measurement 48 Conducting a measurement The GeoSeeker is a geoelectrical measuring instrument and thus intended to measure the resistivity of underground layers The conductivity of different layers can be used to find potential places of water deposits or cavity The quality of your measured data depends strongly on the accuracy of your conducted measurement Before conducting a measurement read the information from chapter 6 Preparing and maintaining the equipment on page 39 7 1 Basic Information Before you are going to set up a new measurement you have to investigate about your specific scan area There are some important aspects you have to be aware of before starting your measurement e Ifyou are scanning for cavities the overlying layers must not be to
14. 6 04 geo 33 i okm big 2 Active Scan Accurate Complete Measurement 16 x 16m 50 180m 17 Jun 201411 25 51 2014 06 17 11 25 51 geo 23 iy test Active Scan Accurate Complete Measurement 5x 5m 10 40m 13 Jun 2014 11 01 25 2014 06 13 11 01 25 geo 50 7 dthfjzgjugujhkugkugkujgjkgg Active Scan Accurate Complete Measurement 5x 5m 10 40m 13 Jun 2014 10 18 31 2014 06 13 10 18 31 geo 0 Figure 5 10 Continue Measurement After selecting a specific measurement it opens up and you will see all important information as shown in figure 5 9 to setup your electrodes for the next scan point If you tap a long time on one of those entries a context menu is opening where you can select one of the following actions e Continue Select this action to continue the unfinished measurement e View Select this action to view the 3d representation of the unfinished measurement e Delete Select this action to delete the selected measurement OKM GmbH www okmmetaldetectors com Android Application 35 5 2 3 View Measurement Select this option to see a list of all measurements finished and unfinished measurement by looking for the previously entered project title OKM GeoSeeker View Measurement Z OKM Active Scan Accurate Complete Measurement 30 x 45 m 30 150m 24 Jul 2014 13 51 43 2014 07 24 13 51 43 geo 0 nq Active Scan Accurate Complete Measurement
15. During a Passive Scan only the Voltage Electrodes are used and have to be arranged around the current scan point The Power Electrodes are not used at all Figure 7 8 Arrangement of electrodes during Passive Scan OKM GmbH www okmmetaldetectors com CHAPTER 8 Analyzing a Measurement In this section you will learn how to analyze a measurement by using the Android application 62 Analyzing a Measurement While scanning an area you will see the measured values power voltage and resistivity of the current scan point on the display of the Tablet PC Based on that values you can make first conclusions about your scan field conditions You always have to take the following aspects into your considerations e You always have to inform yourself about the geological structures in your area to know about the underground conditions e Soil composition ground moisture and temperature are influencing the soil resistivity Soil is rarely homogeneous and the resistivity of the soil will vary geographically and at different soil depths e Very low resistivity values are indicating a good conductance which could indicate a high probability of water deposits e Very high resistivity values are indicating a bad conductance which could indicate a high probability of cavities 8 1 Interpretation of scan values There are 3 basic values indicated after each single scan process So you will get a rough idea
16. EE SC Wee We ee 7 2 General Measurement Procedure 2 ccc cece cece cecccccccccccceecccceeccccceecccceeenccceeecccceeeeeeeeeeeeeeeesseeeeeees 47 48 49 SEENEN att aww mm aa _ pp mp mm mmepmz 54 7 3 1 Setting up your scan field With markers hhh ek keke k ee kek k kek Ke K KEKE K K k 54 55 al 5 Analyzing EE ernn EE a E EE S EE C NE ee dE 8 2 Interpretation of graphical representations ssessessessesseessessesseesersereseeseesersoreseesoesseessssseessesre Ga LACT EG E EE 60 61 62 63 63 64 EE EE 65 Geel Pose Ve Meal urone E 65 65 65 66 66 67 a aa al E aE E N A E d DN Bt ee RE your SOCATEC SUS sci me lann nnan ONEEN AAEE EEE EAEE EEE bke b b n e t b k 69 70 EE Up your EE wow gm pp E MH eDan22 70 SEENEN Z1 EE Li N S N D al SWED ee _ nan Zi iz 9 3 Measurements under tough soil conditions 5 40 0c00nsnsesenvinnsaonsnennnenenivaraveecesees4o00sasadeswousvsvensnensananenes OKM GmbH www okmmetaldetectors com Table of figures Figure 4 1 Elements of the electrodes ANNER 20 Figure 4 2 Elements of the power Cable drums NEEN 21 Figure 4 3 Elements of the voltage cable drums ANNER 21 Figure 4 4 Control elements of the Controller hike kek keke k keke kek kek ek Ze Figure 4 5 Elements of the tablet holder AANEREN 23 Figure 4 6 Control elements of the Power BOX cccecececec
17. FS Future Series GeoSeeker User s Manual Any information contained in these operating instructions may be changed without prior notice OKM does not make any warranty for this document This also applies without limitation to implied assurances of merchantability and fitness for a specific purpose OKM does not assume any responsibility for errors in this manual or for any incidental or consequential damage or loss associated with the delivery exploitation or usage of this material This documentation is available as presented and without any kind of warranty In no circumstances OKM takes responsibility for lost profits usage or data loss interruption of business activities or all kind of other indirectly damages which developed because of errors in this documentation This instruction manual and all other stored media which are delivered with this package should only be used for this product Program copies are allowed only for security and safety purposes The resale of these programs in original or changed form is absolutely forbidden This manual may not be copied duplicated or translated into another language neither in part nor completely over the copyright matters without the prior written consent of OKM Copyright 2002 2014 OKM GmbH All rights reserved Table of contents EE e EE KENE ee e EE ENEE eebe SN RE ae e EEN BR Ee e EE asas i EE 1 2 4 Voltage Power Supply e keke eee kek ee eke kek
18. Figure 5 9 New Measurement Arrangement of electrodes Status information Here you can see the current operating state of your Power Box and Controller as well as the current battery status Continue Button After setting up your equipment according to the displayed instructions you tap on this button to run a new measuring at the current scan point Measure Values After measuring a scan point you will see the results immediately displayed on the screen The available measure values depending on the selected scan mode are Active measurement Voltage Power and Resistivity e Passive measurement Voltage Menu Click on this menu button to change your units between meters m and feet ft This menu button can be located at very different positions depending on your current Tablet PC or Android version Cable Markers Displacement This is the place where you get proper information about the next scan point the scan point which will be measured after tapping the continue button There is always an indication of the cable marker where your electrode needs to be placed into the ground as well as the final distance between Power Box or Controller in meters or feet If the number is written in red color than this value has changed in relation to the previous scan point There are following letters and meanings e A is the distance between left Power Electrode and Power Box as well as the distance between Power Box and righ
19. about the underground conditions while scanning the area The measure values are shown in figure 8 1 where you can read the values after measuring a scan point OKM GeoSeeker Active Scan Accurate Complete Measurement 30 x 45m 30 150m Controller 0 0v 0 0 560 0 Powerbox f o ov A ov Continue Set up the current measure point Voltage mV Measure Values Power mA Resistivity Om A 5 30m B 3 3m L 1 0m BSS es W 1 0m D 30m First Measure Point 5 0 Figure 8 1 Measure values as indicated during a measurement Some of the measure values will not be available in passive scan mode The available measure values are e Voltage The voltage is measured in Volt V and indicates the potential difference measured by the Controller e Power The power is measured in Ampere A and indicates how much electrical current has been injected into the underground by the Power Box This value is only available in active scan modes OKM GmbH www okmmetaldetectors com Analyzing a Measurement 63 e Resistivity The ground resistivity is measured in Ohm Meter Qm and indicates the resistance of the underground at the current scan point and depth It is mainly calculated by the power voltage and distance of the electrodes This value is only available in active scan modes The resistivity value is the basis of further calculations concerning underground water deposi
20. as the charger is connected to the Controller the charging process takes place no matter if the Controller is powered on or off But only if the Controller is powered on you will also see the charge condition visually as follows e Power LED blinks red Charging in progress In case the Power LED is blinking red after more than 5 hours of charging the batteries are defective and have to be replaced e Power LED blinks green Charging finished OR No batteries in compartments If the batteries are completely empty but the Power LED is blinking green after only a short time less than 1 hour the batteries are exhausted and have to be replaced You may also use one way non rechargeable NiCd or zinc carbon batteries as well as NiMh batteries with less than 2000 mAh but this will result in much shorter operating times Also keep in mind not to connect the charger if non chargeable batteries are placed into the compartments danger of explosion 6 1 2 Mounting the Tablet PC holder If you like to mount the Tablet PC holder to the Controller just put it into place and fix the Tablet PC as shown in figure 6 3 and described in section 4 4 Tablet Holder on page 23 OKM GmbH www okmmetaldetectors com 42 Preparing and maintaining the equipment Figure 6 3 Tablet PC mounted to Controller 6 1 3 Mounting the Voltage Cable Drums For the measurement itself two Voltage Cable Drums have to be mounted to the Controller This is don
21. concerning this operating mode After setting up your measurement your Tablet PC shows the initial setup of your electrodes An example is shown in figure 7 5 OKM GeoSeeker Active Scan Accurate Complete Measurement 30 x 45m 30 150m Controller 0 ov 0 0 560 0 Powerbox f 0 0v A ov Continue Set up the current measure point Voltage mV Power MA Resistivity Om A 5 30m B 3 3m as j GES ES n IEN W 1 0m D 30m First Measure Point D R N Figure 7 5 Instruction screen for setting up a measurement You will now arrange all your equipment according to these instructions For our example it will be as follows OKM GmbH www okmmetaldetectors com Conducting a measurement 53 e A In this example each Power Electrode has to be placed in a distance of 30 m to the left and right of the Power Box This corresponds to the cable marker 5 So you will unroll your cable until the marker 5 is reached and then you put the electrode into the ground e B In this example each Voltage Electrode has to be placed in a distance of 3 m to the left and right of the Controller This corresponds to the cable marker 3 So you will put the electrode at cable marker 3 into the ground s L W If you stay in front of your first scan point during a complete measurement you will see scan point markers straight ahead as well as t
22. e by pushing the drums over the metallic connectors as shown in figure 6 4 Figure 6 4 Voltage Cable Drums mounted to Controller Please ensure that the metal connectors are all clean to have good electrical contact with the drum s inner connectors While replacing the electrodes during a measurement you may detach the cable drums but as soon as you are ready to measure some new scan values you have to connect it back to the OKM GmbH www okmmetaldetectors com Preparing and maintaining the equipment 43 Controller 6 2 Preparing the Power Box 6 2 1 Charging the internal batteries There are two lead acid batteries built in into the Power Box for the power injection process Please ensure that this batteries are charged completely before conducting a measurement For charging you have to connect the supplied charger with the Charger Socket of the Power Box as shown in figure 6 5 Figure 6 5 Connecting the Power Box Charger The current charge condition is indicated by the Charger LED of the Power Box whereas the following indications are possible e Charger LED shines red Charging in progress e Charger LED shines green Charging finished As soon as the Charger LED shines green the charging process has finished and you can disconnect the charger Do not power on your Power Box while charging This would interrupt your charging process OKM GmbH www okmmetaldetectors com 44 Preparing and
23. e kek kek kereke eee neee eee eee eee ee eeeeeeee 1 2 5 Maintenance and Ja 5950 RN REENEN ee eee ee keke keleke eee keke eee ee RENE NNN Ee 1 2 6 Danger of Explosion during Excavation h l keke ee k k kk SEET eeh 2 1 Controller Receiving Unit AA Power Box Gending UML ME X eebeb e _ _eeeeer bbbbpppwyn Ua eza EE EE SEL Power Drum l2 AUU TIT geegent 24A Voltage Drom O 120 MT ME 2 5 Tablet PC Minimum requirements ccccccesecscecescscscececececscececeaeaeaeesesecesenes 3 SCOpa D E 4 Control elements osesnesessrssesersrssersesersersessrrsesersereessrrsesersersessereeserserserserersersesere A E a E H re 4 2 1 Power Cable Drums 290 Mm E 4 2 2 Voltage Cable Drums 120 mm NNN EE da EE HOOT E GB ee ode EEN SE Ee Ee BE re te E 5 1 Download amp Installation EEN 5 4 Operating modes and MINCHONA l e D z 1 Now Ern EEN 5 2 2 Continue Measurement TE 5 2 3 View Measurement E A a E E OEE mm E N AA E PDO MO ALOT ee 6 Preparing and maintaining the equipmen tt kk kek kek eee k ek K k K Ma E E et the Ee EE 6 1 1 Placing and charging the batteries i kk k kek k Bl Mounin tHe Tablet PC Wome EE 6 1 3 Mounting the Voltage Cable Drums Mh kek ee keke k O2 Preoparind Tin Power E OKM GmbH www okmmetaldetectors com EE EE EEN nternal e e 43 Big es EE De Sal Kena D Tar E 44 EE N SIC CNE ege
24. kmmetaldetectors com Analyzing a Measurement 67 8 3 2 4 Impervious layers A typical structure you can see after measuring in mountain areas are impervious layers or barriers under the ground This layer mostly appears at the transition of loosely soil to massive stone Figure 8 8 Example of an active measurement impervious layer barrier After adjusting the colors it is very obvious that there is a complete layer in the measurement with high resistivity OKM GmbH www okmmetaldetectors com CHAPTER 9 Tips and Tricks In this section you will get some additional tips you should consider during your measurements 70 Tips and Tricks 9 1 Improving your scan results There are some aspects to keep in mind for improving the results of your scanning process Please pay attention that the electrodes have good electrical contact with the surrounding ground Therefor it is necessary to put the electrodes as deep as possible into the underground as shown in figure 9 1 Figure 9 1 Electrodes need good electrical ground contact Even if you cannot put all electrodes very deep into the ground all electrodes needs to be placed in the same depth as shown in figure 9 2 Figure 9 2 Electrodes have to be equally set into the ground Only then an equal electrical distribution is guaranteed 9 2 Speeding up your measurement The electrodes have to be replaced a lot while conducting a measurement This is really t
25. lectrodes with red socket and the resulting voltage is measured with the two Voltage Electrodes electrodes with black socket By increasing or decreasing the distance of the Power Electrodes step by step the measure depth also increases or decreases accordingly as shown in figure Tiss OKM GmbH www okmmetaldetectors com 50 Conducting a measurement Figure 7 3 Power injection depth depends on electrodes distance You have to keep in mind that for a maximum depth penetration of 250 m 820 ft you will also need 250 m 820 ft free space to the left and right of your scan point to put your electrodes into the ground So it can be possible that you cannot always scan up to 250 m if there is no free space for your electrodes Before starting the actual measurement you have to investigate your area to find out what kind of measurement would work the best and what parameters are useful While creating a new measurement with the Android application you have to set up several settings regarding scan mode scan profile depth range as well as field dimensions The GeoSeeker supports different scan modes which are shown in figure 7 4 Measurement Inject power into the Do not inject power underground Active Scan Passive Scan into the underground Accurate An active measurement is always injecting electrical power into the underground before measuring the
26. lements of the Power Box Holder for Electrodes Electrodes Power on off button Charger Socket Power LED Left socket for cable drum Charger LED Right socket for cable drum Compartment for cables controller and accessories Antenna Figure 4 6 Control elements of the Power Box Power on off button Use the power on off button to power your Power Box on and off In case of any critical situation you can switch off your device at any time The functionality of the device will not be affected Power LED After powering on the Power Box the Power LED will first shine in a blue color until the device is ready for operation Then it will shine in a color indicating the current charge condition of the internal batteries Green indicates a charge of more than 40 yellow a charge of more than 20 and red anything below You should recharge the internal batteries latest when the Power LED is red to make sure you have enough power for your next measurement Charger Socket Use the charger socket to connect your 24 V charger Depending on the current charge condition of the internal batteries the charging process can take up to 8 hours OKM GmbH www okmmetaldetectors com Control elements 25 Charger LED The Charger LED represents the current charge condition of your internal batteries As long as the Charger LED is shining red the charging process is still in progress As soon as the LED turn
27. les available e Complete Measurement This option is used to measure a complete rectangular field starting with at least 2 x 2 scan points As the name already indicates this is the most complete measurement to get data of a large area e Single Measurement This option is used to measure a single scan point only This is mostly used to do some quick test measurements on your scan field to find i potential places where you could do a more complex measurement OKM GmbH www okmmetaldetectors com 52 Conducting a measurement e Lengthwise Measurement C This option is used to measure a single line of scan points lengthwise Use this option if you would like to scan a cross section in lengthwise direction e Crosswise Measurement dadan This option is used to measure a single line of scan points crosswise Use this option if you would like to scan a cross section in crosswise direction The final amount of scan points except for the single measurement profile can be defined during the next steps of the measurement creation After selecting the operating mode New Measurement from the GeoSeeker application you will select a scan mode a scan profile set up the starting and ending depth adjust your field dimensions length and width as well as the scan point distance resolution Also read section 5 2 1 New Measurement from chapter 5 Android Application on page 29 for more details and figures
28. less data connection between Controller and Power Box You should raise it up for better connection quality Electrical Connector Small Cable Drum There are two small cable drums which can be mounted to the electrical connectors of the Controller These Voltage Cable Drums are used to connect the Controller with the two Voltage Electrodes electrodes with red socket 4 4 Tablet Holder The tablet holder is used to mount a Tablet PC on top of the Controller So you can either put the controller onto the ground for operation or you simply carry the Controller around your neck Clip Fastener Top Bracket Mechanical Connector Bottom Bracket Figure 4 5 Elements of the tablet holder Clip Fastener Use this clip to loosen or tighten the top bracket of the Tablet Holder This bracket will push the Tablet PC into the bottom bracket to keep it in place As soon as the Tablet PC is fixed between the brackets lock the clip Mechanical Connectors You can mount the Tablet Holder to your Controller by pushing the metallic connectors into the appropriate holes at the top of the Controller Top Bracket Bottom Bracket These two brackets keep the Tablet PC in place after tighten the Clip OKM GmbH www okmmetaldetectors com 24 Control elements 4 5 Power Box The Power Box is used to inject electrical power into the underground which could be measured by the Controller afterwards Figure 4 6 shows all the control e
29. lue of your scan field OKM GmbH www okmmetaldetectors com 64 Analyzing a Measurement 8 2 2 Passive Scan After completing a passive scan the 3d graphic is representing the natural ground voltage values in different colors as shown in figure 64 amp OKM GeoSeeker Active Scan Accurate Complete Measurement 4x4m 5 50m de Q Water Cavity ele ey ome a 9 Daa Figure 8 3 Graphical 3d representation of a passive scan A passive scan is only showing the distribution of the natural occurring voltage It is not possible to get an estimation of the depth of underground anomalies Each cube in the 3d graphic is representing a measure value of your scan field OKM GmbH www okmmetaldetectors com Analyzing a Measurement 65 8 3 Examples Here you will find some additional examples to get a better understanding of possible values and its representation Please keep in mind that your own measurements may look different than these graphical representation as your local environment ground conditions and hidden anomalies may be very different too 8 3 1 Passive Measurement The passive measurement contains no depth information and is only showing a plane representing the natural occurring voltage which could indicate underground flowing water resources Figure 8 4 Example of a passive measurement flowing water After color adjustment the background is reduced and the blue col
30. maintaining the equipment 6 3 Creating a Wi Fi Connection Before you can use your GeoSeeker for the first time you have to create a Wi Fi WLAN connection between your Tablet PC and Controller If you purchased the Tablet PC with your GeoSeeker it has been already prepared and you should be able to start your measurement right away If there are other public networks available and your Controller is not powered on it might be possible that your Tablet PC is establishing a connection to other networks first In case you have to create a new network connection by yourself you have to use the Wi Fi capabilities of your Android Tablet PC Please follow these steps to create your Wi Fi connection 1 Power on your Controller 2 Power on your Tablet PC and go to Settings 3 Enable Wi Fi by setting it from OFF to ON Now your Tablet PC is looking for available networks automatically If successful you will see a network called OKM GeoSeeker in your list of available networks Settings WIRELESS amp NETWORKS Wi Fi OKM_GeoSeeker Secured with WPA2 D Bluetooth ON Data usage More DEVICE di Sound d Display Storage N Battery En Apps amp Users ASUS Customised Setting C Launcher C E Figure 6 6 Enabling Wi Fi 4 Select OKM GeoSeeker and enter the network password GeoSeeker use correct upper and lower case Confirm by tapping OK OKM GmbH
31. ms 2 4 1 Power Drum 290 mm Dimensions H x W x D NEE 360 x 290 x 200 mm AE EE 6 5 kg GCaD LENO EE 255 m EE A eege 15 2 4 2 Voltage Drum 120 mm Dimensions H Xx W x D tee AE EE 120 x 120 x 45 mm ADE aerea N E EEA A E mend 0 65 kg GCaD LONO rE E E e r r r r r e A A TEO EEES 26 m Linz eee 29 2 5 Tablet PC Minimum requirements Operating SY SECM ee Android 4 4 2 or higher WEA WV NN E Required USB CMA ea E Micro USB B VS DAY ee 7 Tablet Screen Outdoor Brightness OKM GmbH www okmmetaldetectors com CHAPTER 3 Scope of delivery 18 Scope of delivery In the following section you can find all standard equipment and optional parts of the GeoSeeker Controller Power Box carrying case Power Cable Drum 290 mm cable drum Voltage Cable Drum 120 mm cable drum AA batteries rechargeable Tablet Holder Android Tablet PC User manual Extension cable 2 m Charger for Controller Charger for Power Box Electrode PB FP PN PP FP ON N Fi PB USB Power Pack with charger and travel adapter Table 1 Scope of delivery OKM GmbH www okmmetaldetectors com HAPT Control elements In this section you will learn more about the fundamental use of all control elements for this measuring instrument All connections inputs and outputs are explained in detail 20 Control elements 4 1 Electrodes There are 4 electrodes in total 2 electrodes with a red socket
32. nene scence ee eeeeee eens eens ee kek kek kek keke k keke Kek Ke Ke 24 Figure 5 1 Installation of the application via Google Play Store kk k k k 28 Figure 3 2 EENHEETEN ei 29 Figure 5 3 New Measurement Creation process ccsceessscecececscscececscsacaccecscnencecececeseanacececscscncesnes 30 Figure 5 4 New Measurement Project title notes 2 0 kk kek ke k k k k eleke 30 Figure 5 5 New Measurement Scan mode ENNEN 31 Figure 5 6 New Measurement Scan profile Eke keke kek keke kek k kek ke kek kek 31 Figure 5 7 New Measurement Depth settings ANNER 32 Figure 5 8 New Measurement Field dimensions cece kk kek k ee kek kek k k ER Figure 5 9 New Measurement Arrangement Of electrodes h e kek kek kek k 33 Figure 5 10 Continue Meas remen s sl c xaaia nal n xs xel sed an 2253234240429 x1 yaw aniy x kd klan kk k ku An kG K l ae ya de 34 Figure 5 11 View Measurement List of files NENNEN 35 Figure 5 12 View Measurement 3d representation h h kk ek kek ke k keke kr k kk 35 FG EN CV OA Sr p wrXXX ra r r ra wa rararsr i 36 Figure 5 14 SUpport TITOT ge e E 37 Figure 6 1 Placing batteries into the Controller s compartments eee kk kk k kk k 40 Figure 6 2 Connecting the Controller s charger
33. ntation Menu Local Color Adjustment Global Color Adjustment OKM GmbH www okmmetaldetectors com 36 Android Application View Buttons A click on one of these buttons changes the orientation of the 3d graphic within the viewport You may also change the orientation by rotating it with your fingers Just tap your finger on the screen and swipe over it You may also zoom in and out by using 2 fingers simultaneously Menu Use this menu to change the measure units meter or feet of your application Furthermore you have access to the previously entered project information Local Color Adjustment The local color adjustment buttons are used to increase or decrease the visibility of blue or red colors By using these buttons you can highlight a specific color and its representing data Global Color Adjustment The global color adjustment buttons are used to increase or decrease all colors at once Depending on the color distribution you will decide about the existence of water or cavity The more solid color the higher the probability of an existence Detailed information about graphical analysis of a measurement you will find in chapter 8 Analyzing a Measurement on page 61 5 2 4 Activation Before you can use the application with your GeoSeeker you have to activate both your Controller and the Power Box with a proper activation code OKM GeoSeeker Renew Activation In order to use this application you ha
34. o the left To find the current scan point in this example just walk L 1 scan point markers straight ahead and then W 1 scan point markers to the left Now you will stay at the current scan point e D In this example we are going to measure data in a depth of 30 m when pressing the button Continue For all coming steps you will simply follow the instructions on your Tablet PC After each measuring process the application will show you how to replace the electrodes in the field before measuring the next scan point The following instruction scenarios might occur during your measurement A T le ep teen 7 ka mee You have to move the Power Electrodes red socket outwards to the next cable marker This will increase the depth of the current scan point You have to move the Power Electrodes red socket inwards to the previous cable marker This will decrease the depth of the current scan point You have to move the Voltage Electrodes black socket outwards to another cable marker several cable markers might be skipped This will be necessary if the measured voltage is too low You have to move the Voltage Electrodes black socket inwards to another cable marker several cable markers might be skipped This will be necessary if the measured voltage is too high OKM GmbH www okmmetaldetectors com 54 Conducting a measurement e Depending on your scan mode you have
35. o wet otherwise the injected power will not reach its final depth The injected power always uses the easiest and most conductive way to flow through the underground soil e Never conduct a measurement during or directly after a thunderstorm Lightning strikes are not only influencing your measurement they are also very dangerous while laying out the cables and putting the electrodes into the ground e When conducting a measurement the surface of your scan field should be equally dry and not wet So it will be a bad idea to run a measurement during or directly after rainy days Wait some days until the ground is not too wet anymore before conducting a measurement e The electrodes have to be in good electrical contact with the surrounding soil The deeper the electrodes are placed into the ground the better the contact and the better the final measuring result e The deeper you are scanning the larger the underground objects must be You cannot detect very small cavities or water deposits at very high depths It is also much more easy to detect thick objects that overlap more depth layers than flat objects as shown in figure 7 1 Figure 7 1 Detection of thick objects is better than flat objects e Your chosen scan field resolution distance between scan points must match the object s dimensions This means you can only detect underground anomalies if you scan right on top of the hidden targets as well as the surrounding ground
36. or is better visible 8 3 2 Active Measurements 8 3 2 1 Water Deposits The typical color of water deposits is blue The following 3d graphics are showing an indication of water under the ground Figure 8 5 Example of an active measurement water deposit OKM GmbH www okmmetaldetectors com 66 Analyzing a Measurement The initial 3d representation is not that clear because of surrounding measure values After adjusting the color an underground water deposit is clearly visible 8 3 2 2 Water deposits with areas of high resistivity In this example you will find two different kind of anomalies at the same time There is an area of high resistivity at the top shown in red and yellow colors At the bottom of the graphic there is another area of high conductance very low resistivity mostly indicating a high probability of a water deposit Ft Ee s Figure 8 6 Example of an active measurement water deposit and barrier In the beginning the 3d representation is not very clear but after adjusting the colors two anomalies become clearly visible 8 3 2 3 Cavities Underground cavities if big enough are typically shown in reddish colors Cavities have a very high resistivity as long as it has not been refilled with any conductive material H Figure 8 7 Example of an active measurement cavity After adjusting the colors you will see there is some type of cave in the measurement OKM GmbH www o
37. ough when you are operating the device just by yourself So it is strongly recommended to work in a group of 3 or better 5 people OKM GmbH www okmmetaldetectors com Tips and Tricks 71 9 2 1 Operation with 3 people The first person is responsible to operate the Tablet PC with the Android application Furthermore this person adjusts the inner Voltage Electrodes black socket ot Ren a mavmt T pr gaer ee ier gt Lienen aA aq ku al n ze ch 2 d gt shear A ee QE ai en p n ets Es Z Gest MK SEKR Ee Ek Yek aia cane SN i geg ciye ve cin At E v2 A Cat A Ja Figure 9 3 Operating the GeoSeeker with 3 people The other two persons are responsible for the adjustment of the Power Electrodes red socket So each of that two persons has control over a Power Cable Drum One to the left and the other one to the right Both persons rearrange the electrodes according to the instructions of the first person who operates the Controller It is very recommended to use 3 walkie talkies to give instructions because the distance to the operator can be up to 250 meters depending on the depth settings Make sure each participant knows about the possible danger of high voltage 9 2 2 Operation with 5 people This situation is similar to the previous one but there are two additional persons responsible for the Voltage Electrodes black socket which are connected to the Controller Figure 9 4 Operating
38. re still buried in the ground Do not start digging and hacking for an object wildly when you receive a signal of a piece of metal from your device Firstly you might indeed cause irreparable damage to a truly rare find and secondly there is a chance that the object reacts in an insulted way and strikes back Note the color of the ground close to the surface A red or reddish color of the ground is an indicator of rust traces As regards to the finds themselves you should definitely pay attention to their shape Curved or round objects should be a sign of alarm especially if buttons rings or little pegs can be identified or felt The same applies to recognizable ammunition or bullets and shells Leave that stuff alone and where it is do not touch anything and most importantly do not take any of those items home OKM GmbH www okmmetaldetectors com Introduction 11 with you The killing machines of war made use of many diabolical inventions such as rocker fuses acid fuses and ball fuses Those components have been rusting away in the course of time and the slightest movement may cause parts of them to break and be triggered Even seemingly harmless objects such as cartridges or large ammunition are anything but that Explosives may have become crystalline over time that is sugar like crystals within them have formed they are still dangerous and should be regarded as a potential killer Moving such an object may cause those cry
39. rical Charger connector Antenna Socket Figure 4 4 Control elements of the Controller Power on off button Use the power on off button to power your Controller on and off In case of any critical situation you can switch off your device at any time The functionality of the device will not be affected Power Charger LED After powering on the Controller the Power Charger LED will first shine in a blue color until the device is ready for operation Then it will shine in a color indicating the current charge condition of the internal batteries Green indicates a charge of more than 40 yellow a charge of more than 20 and red anything below You should recharge the batteries latest when the Power Charger LED is red to make sure you have enough power for your next measurement Charger Socket Use the charger socket to connect your 12 V battery charger Before using the charger ensure that only rechargeable batteries are placed into the battery compartments Depending OKM GmbH www okmmetaldetectors com Control elements 23 on the current charge condition of the batteries the charging process can take up to 5 hours Alternatively you can just replace the batteries with fresh ones Battery Compartments There are two battery compartments for a whole of 8 AA batteries Please pay attention to place the batteries in the right order as indicated on the compartment Antenna The antenna is used to establish and maintain a good wire
40. s green your internal batteries are fully charged Sockets for Cable Drum Use these sockets to plug in the connectors of the Power Cable Drums These are the output sockets for the power injection while conducting active measurements Antenna The antenna is used to establish and maintain a good wireless data connection between Power Box and Controller You should raise it up for better connection quality Compartment The compartment is used to store the Controller and all kind of accessories like extension cables chargers Power Pack as well as the tablet holder Electrodes The electrodes are stored in the top of the carrying case by clipping it into the designated clips There are two Power Electrodes with a red socket as well as two Voltage Electrodes with a black socket The Power Electrodes are used to inject power generated by the Power Box into the ground The Voltage Electrodes are used to measure the voltage of the underground utilizing the Controller OKM GmbH www okmmetaldetectors com CHAP E ____ Android Application In this section is explained how to prepare your Tablet PC with the Android application ER 5 28 Android Application If you purchased the complete package of the GeoSeeker the Tablet PC is included and already prepared with an activated application In that case you can skip the first 2 sections of this chapter and continue reading with
41. stals to produce friction leading to an explosion If you come across such relics mark the place and do not fail to report the find to the police or proper authority Such objects always pose a danger to the life of hikers walkers farmers children and animals OKM GmbH www okmmetaldetectors com CHAPT Technical specifications 14 Technical specifications The following technical indications are medial values During operation small variations are quite possible Technical changes due to development are also possible 2 1 Controller Receiving Unit Dimensions CA WX DI EEN 130 x 270 x 110 mm Un d EENEG 0 6 kg Weight with mounted cable drums and batteries k keke kek kek Kek K k k 2 1 kg Power Supply 8 AA batteries hk keke keke keke kek K KEKE KK Kek k KEK KK KK KE KK KK KK KK KE K 8 14 VDC Operating Time Charged batteries N keke eee keke kek k k ke ke min 16 hours Charging Time empty batteries M M k k kk kek k k k k typically 3 hours max 5 hours HIL G4 l Q T EE 12 VDC 1 5 A B A E W 80 MHz Cortex M3 HK 16 bit Communication with Tablet DC WLAN Accesspoint 2 4 GHz band channel 6 WPA2 Communication with Power BOX hK keke kek 2 4 GHz band on demand proprietary Pifectiv e Range diferential snene ae ee EE A AA 1400 to 1400 mV Inpu
42. t Power Electrode in terms of distance markers numbered from 1 to 15 e 5B is the distance between left Voltage Electrode and Controller as well as the distance between Controller and right Voltage Electrode in terms of distance markers numbered from 1 to 25 OKM GmbH www okmmetaldetectors com 34 Android Application e L is the number of the current scan point lengthwise It is related to the lower right corner of your scan field e W is the number of the current scan point crosswise It is related to the lower right corner of your scan field e DD is the current depth at which the measuring takes place Detailed information about all available scan modes scan profiles and how to divide your scan field into scan points you will find in chapter 7 Conducting a measurement on page 47 You can exit this screen whenever you like The current scan point information will be stored and can be used at a later time to continue this measurement 5 2 2 Continue Measurement Select this option to see a list of all unfinished measurements Now find your specific measurement by looking for the previously entered project title OKM GeoSeeker Continue Measurement E OKM Active Scan Accurate Complete Measurement 30 x 45m 30 150 m 24 Jul 2014 13 51 43 2014 07 24 13 51 43 geo 0 Ey test140709 Active Scan Accurate Complete Measurement 4x 4m 5 15m 9 Jul 2014 16 46 04 2014 07 09 04 4
43. t Resistance static E approx 12 MQ Data Sampling Rate MA hl E 4096 Hz 64 times oversampling of a 512 samples mean value Measurement Period per Scan Point cece cece keke keke kek keke k k ke min 16 seconds 2 2 Power Box Sending Unit Dimensions H x W x D KK eee eee keke keke keke eleke k k eee k k keke eee ee keke kk e keke kenl 230 x 550 x 360 mm NV OMIA EE 15 8 kg Weight with mounted Electrodes hh h keke eee keke ee k k kek KEK KEK KE KK KEKE KK KEK KK KK KE KEK Ke Keke 18 kg Internal Power Supply KK kek kek keke kek keke k ke k k Lead Acid Battery 2 x 12 V 10 Ah Brenn EE max 390 V 0 5 A 20 W Operating Time Min Power KhK l keke ee keke ee ke ek ke kek KEK Ke KK KK KEK KEKE KEK KK KEK approx 100 hours Operating Time average Power approx 40 hours Operating Time Max Power approx 8 hours CHa TONG IMG cccacscccoagnindsease E A T REEE E E A max 8 hours rte KE Ea a EE 24 VDC 2 A Communication with Controller h C kek 2 4 GHz band on demand proprietary 2 3 Electrodes 1 Equates 8 AA batteries Use only boost chargeable NiMh batteries or primary cells with a minimum capacity of 2000 mAh Do not use other kind of batteries with the supplied charger danger of explosion OKM GmbH www okmmetaldetectors com Technical specifications 15 2 4 Cable Dru
44. the GeoSeeker with 5 people So finally there is one person per electrode and the operator of the Tablet PC is only giving instructions and takes care about the whole scanning process OKM GmbH www okmmetaldetectors com 72 Tips and Tricks Make sure each participant knows about the possible danger of high voltage 9 3 Measurements under tough soil conditions Some environmental conditions make it really hard to conduct a resistivity measurement There can be really tough situations like e very dry soil or sand and e very hard rock But there are also some ways to measure the ground resistivity in that kind of environments Sometimes it is not possible to push the electrodes into the ground with bare hands Then you should use a hammer But on really hard rock even that is not possible and you need more helpful tools like a drilling machine First drill a hole into the hard underground before placing the electrode After that the hole needs to be refilled with wet sand or other good conductive soil to create a good electrical contact to the surrounding environment as shown in figure 9 5 e e f Zen e Gei S RUED Figure 9 5 Drilling a hole and refilling it for the electrode If you are working on really dry soil like sand you should use some water better salt water and just give a little splash small cup over each electrode shaft to improve the electrical ground contact You have to assure that you water all elec
45. the Power Box needs to be placed in the center of the scan field c In Passive Scan the Power Box is not used at all 6 Start measuring the first scan point and follow the application s instructions until your measurement has been completed successfully 7 3 1 Setting up your scan field with markers After investigating your area you should create a new measurement with your application to define the field dimensions the scan point distance resolution as well as the start depth and end depth Then you should place markers at each scan point according to your settings to assure a fluid measuring process The picture from figure 7 2 on page 49 shows an example of how to mark your scan points OKM GmbH www okmmetaldetectors com Conducting a measurement 55 7 3 2 Setting up the power injection for active scan modes The power injection equipment consists of the Power Box the Power Cable Drums as well as the Power Electrodes with Extension Cable All those parts are equipped with red plugs or red sockets This Power Line is used to inject electrical power into the underground to generate a potential difference fall of voltage You can skip setting up the Power Line if you are using the passive scan mode Otherwise follow these steps to set up the Power Line for a measurement OKM GmbH www okmmetaldetectors com Conducting a measurement 1 Depending on the selected scan mode place the Power Box a at
46. tions give information on how to properly use this geoelectrical detector and shows potential sources where precautions should be taken 1 2 2 General Notes Being an electronic device the GeoSeeker has to be treated with caution and care as with any electronic device Any failure to observe the safety precautions given or any use for purposes other than the ones it is designed for may result in damage or destruction of the processing unit and or its accessories or connected components The device has a built in anti tampering module which will destroy the unit if it is improperly opened There are no end user serviceable parts on the inside of the unit 1 2 3 Surrounding Area When moving this unit from a cold place to a warmer place watch out for condensation Do not immediately operate the unit until any possible condensation has evaporated The unit is not weather proof and water moisture or condensation can destroy the unit Avoid strong magnetic fields which may occur in places where there are large electric motors or unshielded loudspeakers Try to avoid using this equipment if someone else is using this type of equipment closely Avoid using this equipment around active military installations and airports or where there may be other devices that may hamper the signals received Radars for aircraft boats and weather reporting may lower the units capabilities OKM GmbH www okmmetaldetectors com 10 Introduction
47. to move the ep ep ee Reng Voltage Electrodes black socket and or the Power A8 to Te Electrodes red socket to the next or previous scan point After recording all measured values in all scan points the application will display a message that your measurement has been completed Now you can open this measurement by using the operating mode View Measurement in your Android application to see a graphical 3d representation of your scan 7 3 Setting up a measurement While preparing your measurement you will set up your scan point markers place the Power Box and the Controller at its initial position and put the electrodes into the ground as indicated by the GeoSeeker application Please follow these basic steps to prepare your measurement 1 Investigate your scan field and find out what kind of measurement you are going to process 2 Prepare your application and create a new measurement 3 Prepare your scan field with scan point markers according to your settings in the application 4 Place the Controller at the first scan point lower right corner and put the Voltage Electrodes according to the application instructions into the underground 5 Place the Power Box according to your selected scan mode and put the Voltage Electrodes according to the application instructions into the underground a In Active Scan Accurate the Power Box needs to be placed at the first scan point b In Active Scan Quick
48. trodes with the same amount of water This procedure has to be repeated each time after replacing the electrodes OKM GmbH www okmmetaldetectors com
49. ts and cavities 8 2 Interpretation of graphical representations After completing a measurement you can also generate a 3d graphic of the measured values The values on which the 3d representation is based on depends on the scan mode of the measurement 8 2 1 Active Scan After completing an active scan the 3d graphic is representing the ground resistivity values in different colors as shown in figure 8 2 to highlight potential places of very high and low conductivity The color s meanings are e Blue This color indicates a high conductivity and a low resistivity as typical for underground water deposits e Yellow White This color indicates a medium conductivity and resistivity as typical for normal underground soil e Red This color indicates a low conductivity and a high resistivity as typical for underground cavities or impervious layers uN OKM GeoSeeker Active Scan Accurate Complete Measurement 4x 4m 5 50m H Q l o Water BE TJ Cavity Q Q oie Q 9 H r E e Figure 8 2 Graphical 3d representation of an active scan After conducting an active scan you will also get some kind of depth estimation Please keep in mind that the indicated depths are maximum depths only In most cases the indicated depth is often higher than the real depth might be but it will give you a rough estimation where the objects of your desire may be Each cube in the 3d graphic is representing a measure va
50. urement 40 Preparing and maintaining the equipment Before you are going to conduct a new measurement or to continue a previously interrupted measurement you have to make sure that all your equipment is intact and ready to use Check all cables and connectors for possible damages recharge all batteries and take care you have enough spare batteries if necessary Also ensure that no parts are missing before going to your scan field Keep your equipment always clean and dry 6 1 Preparing the Controller 6 1 1 Placing and charging the batteries Place 8 AA batteries into the Controller s battery compartments Please pay attention to the right polarity of the batteries The correct polarity is indicated inside of each compartment Figure 6 1 Placing batteries into the Controller s compartments If you have already placed batteries into the compartments and want to recharge it using the supplied charger ensure that you are only using boost quick or fast chargeable NiMh batteries or primary cells with a minimum capacity of 2000 mAh or higher Danger of Explosion Never recharge alkali zinc carbon or lithium batteries primary cells OKM GmbH www okmmetaldetectors com Preparing and maintaining the equipment 41 Connect the supplied charger with the Controller to recharge the batteries within the compartments as shown in figure 6 2 _ 1 Figure 6 2 Connecting the Controller s charger As long
51. ut the plug connector into the left or right socket of the Power Box Marker The cable of each drum is labeled with 15 markers in total This markers are numbered from 1 to 15 and will help you to place the electrodes at the right position during the measurement 4 2 2 Voltage Cable Drums 120 mm The two smaller cable drums also called Voltage Cable Drums are the link between the Controller and the Voltage Electrodes Internal Connector mount to Controller Mark Se Plug Connector plug into Electrode Figure 4 3 Elements of the voltage cable drums OKM GmbH www okmmetaldetectors com 22 Control elements Internal Connector When mounting the small cable drums to the Controller the internal connectors are establishing electrical contact with the electrical connectors of the Controller Please make sure that these connectors are very clean when attaching the cable drums Plug Connector The plug connector needs to be plugged into the Voltage Electrode Marker The cable of each drum is labeled with 25 markers in total This markers are numbered from 1 to 25 and will help you to place the electrodes at the right position during the measurement 4 3 Controller The Controller is responsible to measure the voltage between the measure electrodes Figure 4 4 shows all control elements of the Controller Power on off button Power Charger LED Battery Voltage Cable compartment Hn Elect
52. ve to obtain valid activation codes First enter the appropriate serial number Second enter the corresponding activation code If your tablet pc or mobile phone is connected with the internet the activation code is requested automatically Start Controller Activation Start Powerbox Activation Figure 5 13 Activation Tap on Activation and follow the instructions on your Tablet PC to activate your Controller as well as your Power Box Without a proper activation you cannot create any new measurement First you have to enter the serial number of your Power Box Controller and after that you have to enter the corresponding activation code as printed on your activation card OKM GmbH www okmmetaldetectors com Android Application 37 5 2 5 Support Information Select this option to get more information about OKM s contact details as well as the firmware version of your equipment OKM GeoSeeker Support Information OKM GmbH Website http www okmmetaldetectors com Phone 49 3447 4993000 E Mail info okm gmbh de Firmware 1 1 257 Figure 5 14 Support Information This version number can be useful for our support team in case you need any technical support OKM GmbH www okmmetaldetectors com CHAPTER 6 TT Preparing and maintaining the equipment In this section you will learn more about the preparation and maintenance of your equipment before starting a new meas
53. www okmmetaldetectors com Figure 8 5 Example of an active measurement water deposit hh h E e keke keke kk k 65 Figure 8 6 Example of an active measurement water deposit and barrier eee enseeeeeeenes 66 Figure 8 7 Example of an active measurement Cave 66 Figure 8 8 Example of an active measurement impervious layer barrier cece see eeeeeeeeeeeeenes 67 Figure 9 1 Electrodes need good electrical ground contact 70 Figure 9 2 Electrodes have to be equally set into the ground ccc kk k kek K k k 70 Figure 9 3 Operating the GeoSeeker with 3 people WA kk kek k k kek kek keke k kk kek k 71 Figure 9 4 Operating the GeoSeeker with 5 people ANNER 71 Figure 9 5 Drilling a hole and refilling it for the electrode h he kk kk k k k k 72 OKM GmbH www okmmetaldetectors com CHAPTER 1 Introduction 8 Introduction 1 1 Preface Dear Customer first of all we would like to thank you in choosing a product manufactured by OKM The present product is based on a geoelectrical measuring method utilizing the Schlumberger technique to measure the resistivity of different soil layers With our team of specialists we guarantee that our products are under recurrent control Our specialists are constantly implementing new developments in terms of further quality improvements for you Of course by selling our products we cannot guarantee that you will make a find during
54. y the application of your Tablet PC Unrolling the cable completely is necessary to get the right order of the cable markers and makes it easier to rearrange the electrodes afterwards 4 Put the Voltage Electrode next to the cable marker into the ground as deep as possible Use a hammer if necessary 5 Connect the cable of the Voltage Cable Drum with the Voltage Electrode 6 Repeat steps 2 to 5 for the second Voltage Cable Drum and Electrode OKM GmbH www okmmetaldetectors com Conducting a measurement 59 7 3 4 Final connection schemas At this point you will see the complete setups of different scan modes to get a better idea how the final preparation has to look like 7 3 4 1 Active Scan Accurate During an Accurate Active Scan all electrodes have to be arranged around the current scan point see figure 7 6 So all electrodes are in one straight line to each other Figure 7 6 Arrangement of electrodes during Active Scan Accurate 7 3 4 2 Active Scan Quick During a Quick Active Scan only the Voltage Electrodes have to be arranged around the current scan point The Power Electrodes have to be arranged around the center of the scan field As shown figure 7 7 the Power Electrodes and the Voltage Electrodes are not in one line but two Figure 7 7 Arrangement of electrodes during Active Scan Quick OKM GmbH www okmmetaldetectors com 60 Conducting a measurement 7 3 4 3 Passive Scan
55. your research The recognition of hidden structures depends on a huge number of factors as you are already aware of Determining factors like the dielectric constant of the ground the grade of mineralization and the conductivity of different soils Especially in very wet soils like clay and sand with high conductivity or attenuation of the ground In certain conditions recording of the measured results can be falsified strongly For more information regarding where this equipment has been used and operated please visit our web site Our equipment is constantly being tested and when improvements or upgrades are available we will list them also on our web site It is necessary for our company to protect our developments and all of the information learned during the Research and Development phases in creating our technology We strive to stay within the given framework of legislation patents and trademark registration Please take the time to read this User Manual and familiarize yourself with the operation functionality and how to utilize the GeoSeeker We also offer training for your equipment in our factory We strive to maintain a worldwide dealer network for assistance and support Please visit our web site for more information OKM GmbH www okmmetaldetectors com Introduction 9 1 2 Important Notes Prior to using the GeoSeeker and its accessories please read these operating instructions carefully These instruc

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