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DYNATEST 3032 LWD Light Weight Deflectometer OWNER’S MANUAL Version 1.0.6 ID Number 1110300 Page i 2021.10.04 1110300 LWD 3032 User Manual 1.0.6...
Unpacking ......................5 Standard equipment ..................5 Optional equipment ..................5 Overview ......................6 Introduction to the 3032 LWD (Light Weight Deflectometer) ........7 Description......................7 2.1.1 Introduction ..................... 7 2.1.2 Key Operational Features ..............7 2.1.3 Key Field Software Features ..............8 2.1.4 Key LWDmod Analysis Software Features ..........
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Maintenance ....................... 39 Battery charge ....................39 Calibration ......................39 Service and support ....................40 Support & Assistance ..................40 10 EU declarations and certificates ................41 11 FAQ ..........................42 11.1 General Questions ................... 42 11.2 Questions related to the use ................43 11.3 Questions related to measuring ..............
1 Instructions for use This manual helps the user to get the most from the Light Weight Deflectometer. Before operating the machine, carefully read the following information. REMARK! Encircled capital letters refer to an item illustrated. 1.1 Unpacking When the machine is delivered, carefully inspect the shipping carton and the machine for damage.
The Dynatest LWD meets all current standards the ASTM E 2583, the UK IAN73 and the standards in Denmark and Italy. The equipment is precision-engineered, using stainless or anodized material for all metal parts.
impact force from the std. 10kg or the optional 15kg or 20kg drop weight setups. • The loading plate diameter can quickly and easily be switched between 300mm and 150mm. A 100mm plate diameter is also available as standard, and an optional 200mm plate is available. •...
2.1.4 Key LWDmod Analysis Software Features The optional software package LWDmod offers advanced features for data organization, analysis and reporting: • Imports data into a project database, allowing organization of multiple files into one database. • Graphical features to view test results, and to eliminate selected drops or points from the file.
Figure 3 - LWDmod deflection and elastic modulus displays • Calculation of needed overlay thickness based on design surface moduli. • Analysis of load/deflection time histories (see Figure 3). • Graphical presentation of all analysis results. • Possibility to export result tables and graphics. 2.2 Application The Light Weight Deflectometer is a handy instrument for on-site measurement of bearing capacity and stiffness of subgrade, subbase and thin flexible constructions.
3 Technical specifications 3.1 Technical data General Height 1,38 m (54.3 in), assembled Total weight Approx. 22 kg. (49 lb.) (Std. equipment w/o Transportation Box) Loading Loading plate 100mm (3.9 in), 150mm (5.9 in) & 300 mm (11.8 in) diameters standard (optional 200 mm (7.9 in)) Drop Weight Mass 10 kg (22 lb) (optionally 15/20 kg (33/44 lb))
3.3 Android minimum requirements • Bluetooth LE capability • GPS Capability • Internet Capability • Android 5.1 or newer • Windows Mobile 2002, Windows Mobile Version 5.0 or newer Operating System 3.4 iOS minimum requirements • Bluetooth LE capability • GPS Capability •...
4 Preparing the LWD for use Figure 4 - Standard LWD Page 13 2021.10.04 1110300 LWD 3032 User Manual 1.0.6...
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Place the 300mm dia. ribbed rubber pad on a flat surface. Place the 300mm loading plate on the ribbed rubber pad. Rotate the 3 snap locks to click-lock in an “open” position. Check that the centre deflection measuring rod (at the bottom of the Main Unit) is TIGHT (In case of testing on a very soft material, it may be necessary to unscrew the centre deflection measuring rod and replace it with the supplied Sensor Locking Plug, which will then plug the centre hole of the 150mm plate and also...
Screw the lower part of the Weight Guide Shaft (the one with engraved drop height Nos 1 to 11, No. 11 upwards) into the top stem of the LWD Main Unit. Slide the Drop Weight over the lower Weight Guide Shaft onto the combined Buffer Pad Stack.
4.2 The weight catch assembly The weight catch assembly is used to drop the weights and steady the guide shaft during a measurement (see Figure 5). It can be moved up and down the shaft to give different drop heights and be setup to suit left and right-handed operators. Figure 5 - Weight catch assembly 4.2.1 Adjustment To change the drop height, flip the quick release collar handle open.
4.2.2 Use Lift the weight until the magnets of the drop weight “click” and locks to the bottom of the weight catch assembly. • Grip the weight catch assembly so that the index finger is over the weight release trigger and the little finger is over the safety latch. To release the weight: •...
4.3 The Dual Plate System The Dynatest LWD comes standard with a dual 150 mm and 300 mm diameter plate, which can be switched between WITHOUT removing the LWD from a test point. Please place a 300 mm dia. ribbed rubber pad under the dual plate.
4.4 To Centre and Seat the Geophone Just before making the first drop in a test point, press down FULLY and then release the centring lever to ensure that the centre geophone is seated correctly. This can be repeated at any time between drops and should always be done if the plate has shifted position after a drop.
4.5 Additional Geophones If using additional geophones, these must be located correctly and plugged into the correct sockets on the LWD electronics box. Connect the additional geophones to the connectors on the right side of the electronics box. It is very important that geophone number 2 is connected to D2 and geophone number 3 to D3.
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The scale on the beam (cm/in) can be used to adjust and determine the position of the geophones from the centre of the plate for input into the Field Program (see section 6, “Using the Software”) • Ensure that the additional geophones are placed vertically on the subbase/subgrade layer.
"find" each other. Pairing Bluetooth devices is a simple process and needs to be done only once (or after a hard reset of the smartphone). The Dynatest wireless module keeps all pairing data available even without batteries connected so no new pairing process is needed if the battery power fails on the Dynatest module.
LWD wireless module (Figure 9) behaves as any other Bluetooth peripheral on the smartphone. To connect to an LWD wireless module, first turn on your android phone or tablet's Bluetooth. Then use the Dynatest LWD App to scan for devices to be able to pair and connect to your LWD Wireless Module.
You can download the Dynatest LWD App in Google Play, App Store or Windows Store. If your LWD is a 3032 you need to download the app called Dynatest LWD 3032. However, if your LWD is a 3031 you need to download the app called Dynatest LWD 3031 (Before 2019), and this one is only available for Android/Windows phones.
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Figure 16 – Found Figure 14 – Dynatest LWD Figure 15 – Hardware page. Press Scan Devices. Press Connect App Home Screen Figure 17 – Found Figure 18 – Paired Devices. Press Set as Devices Default Page 25 2021.10.04 1110300 LWD 3032 User Manual 1.0.6...
6 Using the Data Collection Software In the LWD mobile app all the collected data is organized at the top level into projects. Projects serve the function of separating the collected data into different Database files. The Application works on only one active project at a time and all options connected to Export or Settings are related to the currently active project or active user.
To launch the LWD data collection program simply tap on the Application Icon. Figure 19 – Dynatest Figure 20 – Dynatest LWD App LWD App Loading Page Important: Note that licenses are attached to the LWD devices, so if you are connected to an LWD with a pro license, you will have all the functionalities with all the smartphones you connect to it.
6.2 Project page and sessions Figure 22 – Dynatest LWD App Project Create Screen Figure 23 – Dynatest LWD App Project Info Screen After you create a Project you will be presented with the project summary screen (Figure 23). Here you can see the statistics of the project and create new ones, you can see all sessions and locations within the project.
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Navigate to Manual Data and Privacy Policy Figure 24 – Dynatest LWD App Main Menu Figure 25 – Dynatest LWD App Create Session Screen Figure 26 – Dynatest LWD and Sessions Screen App Location List Screen To start the process of data collection you can select an existing data collection Session or create one by tapping the Add Session Button at the top Right.
Figure 27 – Dynatest LWD App Create Location Screen When creating a location, the application will use the phone’s GPS sensor to associate the real-world location with your location description. The location will be displayed on the map and the phone will track your location and adjust the values while you are within the Create Location Screen (Figure 27), or in the Edit Location Screen.
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Drops for the location Figure 28 – Dynatest LWD Location Information Screen Once you have selected a specific location, data collection is possible. While the user is on any other location pages, any drops collected will be associated with that location.
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To add a new picture just tap on the button on the top right in the bar. Clicking on a picture will expand it and give the option of deleting it. Figure 29 – Dynatest LWD Figure 30 – Dynatest LWD Compaction Page Data Collection Page, disconnected state Page 32 2021.10.04 1110300 LWD 3032 User Manual 1.0.6...
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If the device is shown as disconnected in the Data Collection tab you will most likely not be able to collect drops. Try going back to the Main Page, to Hardware and then you will see the devices page with the device you are trying to connect at the top (if you have previously set it as default), and under it you will see a list of previously paired devices.
Settings pages which are only available for the LWD devices with a Pro License. Figure 32 – LWD App Settings Screen Figure 33 – Dynatest LWD Figure 34 – Dynatest LWD Settings General Page Sample Settings Page The General Settings page handles all default naming conventions in the app, so the user can predefine a name template for faster Project, Session and Location creation.
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Figure 35 – Dynatest LWD Figure 36 – Dynatest LWD Figure 37 – Dynatest LWD Settings Device Setup Page Calculations Settings Page Statistics Settings Page The Mechanics Settings page handles all the device measurement setup parameters such as number of geophones, the used plate radius and geophone placement. The Calculation Settings page allows the user to switch calculation methods between real world and lab tests.
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Figure 38 – Dynatest LWD Compaction Settings Tab Figure 39 – Dynatest LWD Licenses The application will automatically update the licenses when it is started. To see a complete list of the assigned licenses, simply navigate from the Main Menu, Settings and then Licenses.
7 LWD Operation 7.1 Using the 300mm or Dual Plate System • Setup the LWD as described in Section 4 “Preparing the LWD for use”. • If the surface to be tested is a coarse material or uneven, spread some sand (like e.g.
• Lift the weight until it clicks onto the catch assembly. • With your feet still partly on the edge of the plate, release the weight as described in Section 4.2 “The weight catch assembly”, ensuring that your hands or other objects will not be hit by the weight as it drops. KEEP HOLDING the Catch Assembly.
All calibrations can be traced back to National laboratory reference standards. In order to have the LWD calibrated, please ship only the Main Unit and the 2 additional geophones (if any) to Dynatest A/S (please see the section Support & Assistance for the nearest Dynatest service address). IMPORTANT! All calibrations of the LWD must be carried out by Dynatest.
Repairs, when required and calibration should be performed by Dynatest service personnel using original replacement parts and accessories. Call Dynatest for repair parts or service. When discussing your machine, please have available the Model and Part Number. Dynatest limits service & support covers the equipment and software manufactured by Dynatest.
10 EU declarations and certificates The LWD is verified in accordance with the following EMC standards • EN50081-1, 1992 Generic Emission Standard Part 1: Residential, commercial and light industry • EN50081-2, 1993 Generic Emission Standard Part 2: Industrial environment • EN50082-1, 1997 Generic Immunity Standard Part 1: Residential, commercial and light industry New version of the standard •...
30 to 70 MPa (4.4-10.2 ksi), Gravel: about 60 to 200 MPa (8.7-29 ksi). How soon can I get a The main LWD unit has to be shipped back to Dynatest to new load cell or have the new load cell or geophone installed. This...
Is it possible to use our Yes, Check the minimum requirements section to see existing PDA or Smart which mobile phones are compatible. Phone? 11.2 Questions related to the use Are the geophones No! Each geophone is calibrated specifically for the interchangeable? instrument it is assigned to.
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What is the penetration There is no rule of theoretical penetration depth for the depth of the force LWD. The penetration depth depends entirely on the applied? stiffness of the material, the force applied and the load plate radius. Can the LWD be used for No! Percent of compaction and Bearing capacity are compaction control? not related and there is no known relation between...
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