ZORN INSTRUMENTS ZFG 3.0 Instruction Manual
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ZORN INSTRUMENTS ZFG 3.0 Instruction Manual

Light weight deflectometer
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Instruction Manual
Light Weight Deflectometer
• ZFG 3.0
• ZFG 3.1
• ZFG 3000
According to German Technical Test
Specification for Soil and Rock in Road
Construction TP BF-StB Part B 8.3
(for further regulations see preliminary remarks)
Subject to change without prior notice.
Status: 01/2021
ZORN INSTRUMENTS GmbH & Co. KG
Benzstr. 1 | 39576 Stendal | Germany
Phone: +49 3931 / 25 27 3-0
Fax: +49 3931 / 25 27 3-10
eMail: info@zorn-instruments.com
Web: www.zorn-instruments.com

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Summary of Contents for ZORN INSTRUMENTS ZFG 3.0

  • Page 1 (for further regulations see preliminary remarks) Subject to change without prior notice. Status: 01/2021 ZORN INSTRUMENTS GmbH & Co. KG Benzstr. 1 | 39576 Stendal | Germany Phone: +49 3931 / 25 27 3-0 Fax: +49 3931 / 25 27 3-10 eMail: info@zorn-instruments.com...
  • Page 2 Preliminary Remarks These operating instructions refer to the factory settings of the ZFG 3.0, ZFG 3.1 and ZFG 3000 units. If you make changes to the settings yourself, the properties described here may differ. Crossreferen- ces are inserted in the relevant sections, which will take you to the information.

  • Page 3: Table Of Contents

    2.2 ZFG Safety Instructions 3. Scope of Delivery 3.1 Technical Equipment 3.2 Light Weight Deflectometer (LWD) Details 3.3 Accessories 3.3.1 ZFG 3.0 and ZFG 3.1 Printer 3.3.2 Printer ZFG 3000 3.3.3 Aluminum Case 3.3.4 Other Accessories 4. Performing the Measurement 4.1 Memory Concept...

  • Page 4: Intended Use

    1. Intended Use The ZFG 3.0, ZFG 3.1 and ZFG 3000 Light Weight Deflectometers (LWD) are used to determine the dynamic deformation modulus E [MN/m²] by means of dynamic plate load tests. This provides con- clusions on the bearing capacity and compaction quality of soils.

  • Page 5: Safety Instructions

    Use only recommended batteries or original rechargeable batteries for the electronic measuring device. Protect the printer at all times from external influences such as moisture and soiling, e.g. sand and dust. Only use the supplied charger to recharge the ZFG 3000 or the printer for the ZFG 3.0 or ZFG 3.1.

  • Page 6: Scope Of Delivery

    The measuring electronics of the ZFG 3.1 model are technically the same as those of the ZFG 3.0, but already include a WiFi transmitter in the basic equipment for transmitting the measured data to a PC or mobile device. As with the ZFG 3.0, the electronics can be expanded to include additio- nal features.
  • Page 7 = optional ZFG 3000 is equipped with a GPS module as standard. ZFG 3.0, ZFG 3.1 are optionally available with a GPS module. If you have chosen a device without GPS, you can have this module retrofitted at any time.

  • Page 8: Light Weight Deflectometer (Lwd) Details

    ZFG 3.0 ZFG 3.1 3.2 Light Weight Deflectometer | Details Level ZFG 3.1 Handle Print Mode Head Limit Stop with Release www.zorn-instruments.de Mechanism Catch Handle Drop Weight Carrying bag Lever for Transport Safety Lock Guide Rod with case, printer Catch for Transport...

  • Page 9: Accessories

    3.3.1 ZFG 3.0 and ZFG 3.1 Printer A thermal printer is available as an accessory for the ZFG 3.0 and ZFG 3.1 models. This allows test reports to be printed out immediately after the measurement. Changes to the basic settings should only be made by trained personnel.
  • Page 10 C | Quick Test of the Printer To check the printer separately, you can perform a self-test. To do this, disconnect the printer from the electronic measuring device and switch off the printer (it also switches itself off after one minute without use).

  • Page 11: Printer Zfg 3000

    3.3.3 Aluminum Case The aluminum case is a transportation case for the protection and safe stora- ge of the electronic measuring device models ZFG 3.0 and ZFG 3.1 and the thermal printer. The screwdriver contained is used to open the battery com- partment.

  • Page 12: Performing The Measurement

    4. Performance of the Measurement While the Light Weight Deflectometers of the models ZFG 3.0, ZFG 3.1 and ZFG 3000 differ in the design of the measuring electronics, there is no difference in the application of the devices. 4.1 Memory Concept All measurements are automatically saved on the supplied SD card as long as it is in the SD slot of the electronic measuring device during the measurement.

  • Page 13: Preparation

    If you want to save the measurement data on the supplied SD card, you must insert it into the electro- nic measuring device as follows: • In the case of a ZFG 3.0, ZFG 3.1 and ZFG 3000, hold the SD card so that the contacts point downwards and towards you.

  • Page 14: Preloading

    Deactivate the "Pre- loading" function for this purpose as well. Switch on the electronic measuring device by pressing the <ON/OFF> key. The start screen will appear (left ZFG 3.0, ZFG 3.1; right ZFG 3000): ZFG 3.0 GPS ZFG 3000 GPS...

  • Page 15: Measurement Procedure

    4.3 Measurement Procedure 4.3.1 Performing the Measurement After preloading is completed, the device switches to the measuring mode automatically. If you did not record the preloading impacts using the electronic meter, you must now turn on your instrument by pressing the <ON/OFF> button. Press the <OK> key. The measurement settings (e.g.

  • Page 16: Displaying The Measurement Results And Settlement Curves

    If the "Repeat pulse" prompt appears in the display after a measurement impact has been performed, a measuring error has occurred. This can be caused, for example, by latching the drop weight too hard. If the same error message occurs during impact repetition, there can be several causes: •...

  • Page 17: Electronic Measuring Device

    5. Electronic Measuring Device The following information applies equally to all models, ZFG 3.0, ZFG 3.1 or ZFG 3000. You can call up the device menu with additional functions by pressing the <Mode> key. Using this key, you can scroll through the individual sub-menus. Pressing the <OK> key selects the highlighted menu.

  • Page 18: Settings

    5.5 Settings In the "Settings" area, you can adjust the device to your preferred settings. To do this, first press the <Mode> key to call up the menu. Scroll to the "Settings" sub-menu using the <Mode> key. Open this by pressing the <OK> key. 5.5.1 Language The "Language"...

  • Page 19: Preloading

    In the "Settings" menu, scroll to the "Textinput" sub-menu using the <Mode> key. Open the sub-menu by pressing the <OK> key. By default, text input is disabled (shown as "Off" in the settings). If you want to use it, you must activate the text input first before the measurement (shown as "On"...

  • Page 20: Coordinates

    Depending on the strength of the satellite signals, the device needs between 30 and 120 seconds to display the location coordinates. Instead of "Zorn Instruments", the location coordinates now appear on the display. In the "Settings" menu, scroll with the <Mode> key to the sub-menu "GPS." Use the <+> and <-> keys to select the desired setting and save your selection with the <ON/OFF>...

  • Page 21: Calibration

    You can print out the device data by pressing the <Print> key (if a printer is connected). On the prin- tout, you will also find the information about the hardware version. Press the <ON/OFF> key to exit the "Info" menu. 5.8 Calibration With this menu item you can check the functionality of the sensor.

  • Page 22: Care And Maintenance

    6. Care and Maintenance Your ZFG 3.0, ZFG 3.1 or ZFG 3000 is an electro-mechanical precision instrument. To ensure reliability and a long service life, please observe the following instructions: • After each measurement process, remove any debris, such as soil, sand, clay or dust from the bearing plate with the mounting pin and the loading device with the drop weight using a dry cloth.

  • Page 23: Protection Against Deep Discharge (Zfg 3000)

    After the calibration period has been exceeded, a corresponding message appears when the device is switched on. 6.5 Calibration Sites ZORN INSTRUMENTS GmbH & Co. KG Benzstr. 1 | 39576 Stendal | Germany Phone: +49 3931 / 25 27 3-0 Fax: +49 3931 / 25 27 3-10 eMail: info@zorn-instruments.com...

This manual is also suitable for:

Zfg 3.1Zfg 3000

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