ZORN INSTRUMENTS ZFG 3.0 User manual

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
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: [e-mail]
Web: www.zorn-instruments.com
Subject to change without prior notice.
Status: 01/2021
(for further regulations see preliminary remarks)

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.
Light Weight Deflectometers ZFG 3.0, ZFG 3.1 and ZFG 3000 are the current generation of precision
deflectometers introduced by ZORN INSTRUMENTS in the early 1990s.
German Technical Test Specification for Soil and Rock in Road Construction TP BF-StB Part B 8.3
(2012) has been revised several times since its initial publication. Since latest revision, regulations on
calibration have been part of a separate specification, TP BF-StB Part B 8.4 (2016).
Outside Germany, TP BF-StB Part B 8.3 (2012) serves as a guide for the application of the Light
Weight Deflectometer. However, a growing number of countries have now also published their own
national standards. The following specifications are examples of this:
Austria: RVS 08.04.04 (March 2008)
Switzerland: VSS 70 313 (July 2019)
Belgium: SB 250 versie 4.1, 4.16.2 (April 2019)
Spain: UNE 103807-2:2008 (July 2008)
USA: ASTM E2835 - 11 (2020)
China: TB 10001-2016 (Design Guidelines Railroad Substructure)
Russia: N° 52068-12 (State Register of Approved Measuring Instruments)
01

Table of Contents
02
1. Intended Use 03
2. Safety Instructions 04
2.1 General Safety Instructions 04
2.2 ZFG Safety Instructions 04
3. Scope of Delivery 05
3.1 Technical Equipment 05
3.2 Light Weight Deflectometer (LWD) Details 07
3.3 Accessories 08
3.3.1 ZFG 3.0 and ZFG 3.1 Printer 08
3.3.2 Printer ZFG 3000 10
3.3.3 Aluminum Case 10
3.3.4 Other Accessories 10
4. Performing the Measurement 11
4.1 Memory Concept 11
4.2 Preparation 12
4.2.1 Saving the Measurement Data 12
4.2.2 Placing the Load Plate 12
4.2.3 Preloading 13
4.3 Measurement Procedure 14
4.3.1 Performing the Measurement 14
4.3.2 Measuring without SD Card 14
4.4 Displaying the Measurement Results and Settlement Curves 15
4.5 Printing the Measurement Results 15
4.6 After the Measurement 15
5. Electronic Measuring Device 16
5.1 Measuring 16
5.2 Reading the Card 16
5.3 Deleting the Measurement 16
5.4 Deleting the Card 16
5.5 Settings 17
5.5.1 Language 17
5.5.2 LCD contrast 17
5.5.3 Type 17
5.5.4 Unit 17
5.5.5 Text input 17
5.5.6 Preloading 18
5.5.7 GPS 18
5.5.8 Coordinates 19
5.6 Setting the Clock 19
5.7 Info 19
5.8 Calibration 20
5.8.1 Sensor Self-Test 20
5.9 Showing Map Directory 20
5.10 Copying Data 20
6. Care and Maintenance 21
6.1 Battery Replacement (ZFG 3.0, ZFG 3.1) 21
6.2 Battery Packs (ZFG 3000) 21
6.3 Protection against Deep Discharge (ZFG 3000) 22
6.4 Calibration 22
6.5 Calibration Points 22

Information on other equipment configurations, on special applications of the Light Weight
Deflectometer and on the so-called Medium Weight Tester M-FG can be found at our web-
site www.zorn-instruments.com.
1. Intended Use
03
The ZFG 3.0, ZFG 3.1 and ZFG 3000 Light Weight Deflectometers (LWD) are used to determine the
dynamic deformation modulus Evd [MN/m²] by means of dynamic plate load tests. This provides con-
clusions on the bearing capacity and compaction quality of soils.
The main field of application for LWD equipment is earthworks and road construction. Further applica-
tions are landscaping and soil exploration.
According to test specification TP BF-StB Part B8.3 (2012), the Light Weight Deflectometer is parti-
cularly suitable for the testing of:
• Coarse and mixed-grained soils with a maximum grain size of up to 63 mm
• Fine-grained soils or comparable building materials with a stiff to firm consistency
• Soils after soil improvement measures
The Light Weight Deflectometer may be used for self-monitoring and for acceptance test in accordan-
ce with this regulation.
For the ZFG 3.0, ZFG 3.1 and ZFG 3000 Light Weight Deflectometers, the standard version with 10
kg loading device and 300 mm load plate has an upper measuring limit of E = 70 MN/m² (MPa). This
corresponds to a settlement of about 0.3 mm.
Measurements on more highly compacted soils should be carried out with the 15 kg loading device
with 1.5 times the impact load. This extends the measuring range to 105 MN/m².
The Light Weight Deflectometer can be used as a supplement or alternative to the static plate load
tester according to DIN 18134 and has the following advantages:
• No loading support (truck) or tripod necessary
• Testing is possible under confined conditions (e.g. track construction, trench backfilling, back-
filling, boreholes, other places difficult to access)
• Low space requirement and low mass of the testing device
• Low time requirement for the test (approx. 2-3 min. per measuring point)

CAUTION
04
2. Safety Instructions
2.1 General Safety Instructions
2.2 Safety instructions ZFG
To prevent accidents and damage to the device, secure the LWD when transporting with the trans-
port lock!
Only plug in the measuring cable when the Light Weight Deflectometer is on the ground and the elec-
tronic measuring device is switched off.
Do not handle under the Light Weight Deflectometer when it is latched on top!
Wearing protective work shoes is recommended. To avoid injuries, only grip the Light Weight device
by the triangular catch handle!
HINT
Check your Light Weight Deflectometer for damage before each use and only use it if it is not dama-
ged.
During the measuring process, make sure that the transport lock is removed. If the Light Weight
Deflectometer is not in use, the drop weight must be at the lower end of the guide rod.
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.
CAUTION
Indicates a possible imminent danger.
If it is not avoided, slight or minor injuries and
damage to property may result.
HINT
Designates general hints, useful tips and recom-
mendations. These, however, have no influence
on the safety and health of the personnel.

3. Scope of Delivery
05
3.1 Technical Equipment
The technical equipment of the ZFG 3.0, ZFG 3.1 and ZFG 3000 Light Weight Deflectometer is descri-
bed below.
The loading device with drop weight, guide rod, spring assembly and release lever is identical for all
models. The same applies to the bearing plate and the MEMS acceleration sensor used.
Differences exist in the design of the measuring electronics.
The ZFG 3.0 model has measuring electronics as a hand-held device, which in the basic equipment
allows the comfortable execution of the dynamic bearing plate compression test. The user is guided by
the device through the measuring process. The device automatically calculates the settlement values of
the bearing plate and the deformation module E
vd
. In addition, it stores the measurement data (optionally
internally or on SD card).
This basic equipment of the ZFG 3.0 can be extended by additional technical features. Available features
include an integrated GPS receiver for localizing measurements, a WiFi transmitter for transferring mea-
surement data to a Windows PC or to tablets and smartphones (iOS and Android). In addition, a thermal
printer is available for instant printing of test reports (optionally in a robust aluminum case).
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.
Both models can be easily distinguished by a different coloured casing.
The ZFG 3000 also has an electronic measuring system with automatic calculation of the bearing
plate settlement values and the deformation module Evd. It stores measurement data either inter-
nally or on an SD card.
The electronics of this model are located in a robust case. Already EX Works, the ZFG 3000 is fully
equipped with a GPS receiver, thermal printer and a license for the use of the ZORN FG software
for the convenient creation of professional test reports on MS-Windows PC. A transparent cover
protects the electronics with LCD display and control buttons as well as the printer from dust and
splash water. If required, the ZFG 3000 can be operated with the lid closed by means of specially
secured, external buttons.

06
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.
ZFG 3.1 is equipped with a WiFi module as standard.
ZFG 3.0, ZFG 3000 are optionally available with a WiFi module. If you have
chosen a device without WiFi, you can have this module retrofitted at any time.
ZFG 3.0 ZFG 3.1 ZFG 3000
Components
Loading device 10 kg
Loading device 15 kg
Bearing plate with accelerometer
Measuring electronics handheld
Measuring electronics compact
casing with integrated printer
Measuring cable
SD card
Batteries (4x AA)
Rechargeable NiMH battery
USB card reader
Paper roll (1x in printer, 2 spare)
Leather case for handheld
Optional equipment
External printer
Case for handheld and printer
Additional modules electronics
GPS (internal)
WiFi (internal)
Documents
User manual long
User manual short
Flyer free download
online online online
= optional
GPS
integrated
WIFI
integrated

07
ZFG 3.1ZFG 3.0
with case, printer
Carrying bag
ZFG 3000
Drop Weight
Lever for Transport
Safety Lock
Spring Element
in Bellows
Tilt Protection
Centering Cone
Carrying Handle
Sensor Connector
Catch Handle
Handle
Level
Head Limit Stop
with Release
Mechanism
Guide Rod
Catch for Transport
Safety Lock
Bearing Plate
Mounting Pin with Sensor
ZFG
Print Mode
ON
OFF
OK
ZFG 3.1
www.zorn-instruments.de
3.2 Light Weight Deflectometer | Details

08
For further accessories get in touch with us: [phone] or [e-mail].
3.3 Accessories
3.3.1 ZFG 3.0 and ZFG 3.1 Printer
A | Using the 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.
Connect the printer to the electronic meter using the supplied printer cable (mini-USB - 3.5
mm jack) to the electronic measuring device. To do this, plug the jack into the socket of the
electronic measuring device and the mini-USB plug into the socket provided for this purpo-
se on the printer.
Switch on the printer by pressing the <FEED/ENTER> key.
The printer enables the printout of test reports immediately after the measurement. Initiate
printing by pressing the <Print> key on the electronic measuring device when measure-
ment results are displayed on the screen.
The printer information on the start screen appears or is updated
when:
• The printer is connected to the device
• The <Print> key on the home screen is pressed
• Or a printout is made.
B | Charging the Printer Battery
Only charge the printer battery with the supplied power supply unit!
If you have connected the printer to the ZFG 3.0 or ZFG 3.1 and the printer has been recog-
nized by the device, the start screen of the measuring device will display information about
the charging status of the printer. This is indicated by a voltage value and a battery symbol.
If the battery symbol is empty, you will only be able to make very few or no printouts at all.
Before printing, an additional message appears: "Printer battery empty".
When using a new battery pack, at least three complete charging and discharging cycles
must be performed for it to reach its full capacity.
Avoid deep discharging the batteries, as this is damaging. If a battery is deeply discharged,
the charging process may stop after 30 minutes. In this case, you must restart the charging
process by disconnecting and reconnecting the power supply unit.
The charging time for fully discharged batteries is approx. four hours.
Replace a defective or used battery only with an original battery!
ZFG 3000 GPS
Wed 16.09.2020
12:12:20
Battery: 5.8V
Printer: 5.8V

09
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).
Press the <FEED/ENTER> key for at least three seconds. A test
printout is now created, on which the firmware version and the
character set are printed. If no printout or an incorrect printout is
made, follow the instructions under > E Problems When Using the
Printer (see below).
E | Problems Using the Printer
If the electronic measuring device does not recogni-
ze the printer after pressing the <Print> key, the
message shown in the picture on the right will
appear in the device.
Disconnect the printer and the electronic measuring
D | Changing the Paper Roll
To change the thermal paper roll, the cover of the printer compart-
ment must be opened. To do this, pull the cover upwards. The war-
ning light flashes red when the cover is opened.
Remove the sleeve of the empty paper roll and replace it with a full
thermal paper roll. Insert the new thermal paper roll so that the
paper unrolls downwards. Place the beginning of the roll over the
tear-off edge of the printer.
device and plug in the printer cable again.
If still no printouts can be made with the printer, check whether the power supply of the
printer is secure. Switch off the electronic measuring device and press the <FEED/EN-
TER> key on the printer. If the LED light flashes green, the power supply is secure. If the
LED does not light up or goes out in less than one minute, you must charge the battery.
Check if the paper roll is used up. In this case, a red signal flashes on the printer. Then
insert a new thermal paper roll following the steps as described in point D.
If the thermal printer does not print after changing the thermal paper roll, either it has
been inserted the wrong way round or it is not a thermal paper roll.
Connect printer and
switch on!
<OFF> Escape

10
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.
3.3.4 Further Accessories
You can optionally purchase further accessories from us:
• Transport case ZORN-ACC4 for splash-proof transport and storage of the Light Weight
Deflectometer
• Transport trolley for practical and energy-saving transport on the construction site
• Magnetic stand for safe storage of the loading device during alignment of the bearing plate
• ZORN FG software for processing and evaluation of measurement data
• ZFG VIEWER APP for displaying the measured values on a tablet or smartphone
• ZORN D PLUS Bluetooth control for the Light Weight Deflectometer for tablet or smartphone
3.3.2 ZFG 3000 Printer
The measuring electronics of the ZFG 3000 includes an integrated thermal printer. This allows test
reports to be printed out immediately after the measurement. Changes in the basic settings should
only be made by trained personnel.
A | Using the Printer
The printer allows printing of test reports immediately after the measurement. Initiate printing by
pressing the <Print> key of the electronic measuring device when measurement results are displayed
on the screen.
For suitable thermal paper and other products get in touch with us: [phone]
or [e-mail].
B | Power Supply of the Printer
The NiMH rechargeable battery built into the ZFG 3000 supplies both the
measuring electronics and the thermal printer. The battery should be
recharged from time to time. For this purpose, only use the supplied
power supply unit. After switching on the device, the charge status can
be seen from the charging bar in the display after the device is switched
on.
C | Change Paper Roll
To change the thermal paper roll, the cover of the printer compartment
must be opened. To do this, pull the cover upwards. Remove the core of
the empty paper roll and replace it with a full thermal paper roll. Insert the
new thermal paper roll so that the paper unrolls downwards. Place the
roll beginning over the tear-off edge of the printer.

4. Performance of the Measurement
11
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.
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. The electronic measuring device works with the
"ZFG" subfolder of the SD card set up Ex Works. There are three different file types in it: *.zxz files,
*.nrz files and *.zxc files.
Each measurement is saved in its own *.zxz file. The file name corresponds to the test number.
Example: If ten measurements were saved on the SD card, there are 10 *.zxz files in the directory
(0001.zxz to 0010.zxz).
The number of *zxz files in the directory is stored under the file ZFG.nrz. The file ZFG.zxc contains the
card number. The measuring device accesses all files.
4.1 Memory Concept
If you make manual changes to the directory (e.g. renaming or deleting files), the mea-
suring device may not recognize all files correctly.
To avoid problems, it is recommended that you do not make any manual changes to the
"ZFG" directory.
You back up your files by backing up the entire "ZFG" directory.
If you no longer need files, you must delete the entire directory.
If GPS data are to be displayed and saved as well, this setting must be selected in
advance under "Settings" (see point 5.5.7).
In addition to the SD card, the device can also save data in the internal memory (flash). These data
can subsequently be copied from the internal memory to the SD memory card.

12
4.2 Preparation
4.2.1 Saving the Measurement Data
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.
• Insert the SD card into the SD slot of the electronic measuring device until a click is heard. If the
card is inserted correctly, it will protrude approx. 3 mm above the face of the measuring device.
• To remove the SD card, press on the protruding end of the SD card. A click will be heard and the
card is pushed out of the device slightly.
• Now you can remove the card.
4.2.2 Placing the Bearing Plate
The surface to be tested must be level and as horizontal as possible. If necessary, fill cavities
with dry medium sand (see also test specification TP BF-StB Part B 8.3).
• Place the bearing plate completely and horizontally on the prepared test surface by
pushing and turning it.
• Both the electronic measuring device and the bearing plate each have a sensor connector. Plug
one end of the measuring cable into the connector of the electronic measuring device and the
other end into the connector of the mounting pin of the bearing plate. The electronic measuring
device must be switched off.
• Now place the loading device on the bearing plate.
Reusable packaging for ZORN Light Weight Deflectometer
Easy and safe
Your ZFG securely packed in 3 minutes.
Picked up - calibrated - returned.
Professionally and swiftly.
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Measure: 300mm/10kg
Execute 1st pulse
Preloading
The current date, time and battery voltage with charge level are displayed. If
the data is to be saved on the SD card, the SD card must be inserted at this
point at the latest. If the SD card is not inserted, the message "No SD card!"
appears above the date.
Press the <OK> key on the electronic measuring device. The preloading mea-
surement process will start.
13
4.2.3 Preloading
Unlock the transport safety lock. Before a measurement can be performed, you
must preload the test surface by applying three impacts.
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):
Hold the loading device by the handle with one hand and lift the drop weight
by the catch handle to the limit stop with the other hand. Pull the release
mechanism to the handle and hook the drop weight in the notch provided (see
Fig. 1).
Align the guide rod of the loading device vertically.
Use the level (depending on the model at the top of the handle or directly on
the notching device) as orientation. Release the drop weight by pulling the
release mechanism and allow it to bounce on the spring element (see Fig. 2).
After the first recoil, latch it on the catch handle and hook it back into the relea-
se mechanism (see Fig. 3). Perform this step a total of three times (observe
display indicator).
Re-engage the drop weight in the release mechanism. The preloading is now
complete.
By default, the preloaded impacts are recorded by the electronic
measuring device. You can deactivate this function under > 5.5
Settings > Preloading.
If the preloading impacts are not to be recorded by the electronic
measuring device, you can also carry out the preloading with the
electronic measuring device switched off. Deactivate the "Pre-
loading" function for this purpose as well.
1
2
3
ZFG 3.0 GPS
ZORN INSTRUMENTS
Wed 16.09.2020
12:12:20
Battery: 5.8V
ZFG 3000 GPS
ZORN INSTRUMENTS
12:12:20
Battery: 5.8V
Wed 16.09.2020
Images if printer is not connected Display indicator during
preloading
If "Textinput" has been activated in advance, the possibility to enter
text appears first. After entering, saving and pressing <OK> again,
the preloading starts (see section 5.5.5 Text input).

Measure: 300mm/10kg
s1: 0,431 mm
s2: 0,428 mm
s1: 0,427 mm
14
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.
After preloading is completed, the device switches to the measuring mode automatically.
After the measurement, check whether the measurement data has been saved on the
SD card: Press <Mode> key > "Read card" (see also point 5.2).
4.3 Measurement Procedure
4.3.1 Performing the Measurement
4.3.2 Measuring without SD Card
The measurement settings (e.g. bearing plate size/mass of the drop
weight) will now be displayed. If necessary, you must switch this to the
intended test mode. In the second line, there will be a request to perform
the first impact. A single beep signals readiness.
After the first impact, the settlement value s1 will appear in the display.
You will now be prompted to perform the second impact by a subsequent
beep. This will be repeated until the third impact.
After the third impact, you will hear a double beep indicating that your
measurement is complete and all three settlement values will be display-
ed. Put the drop weight down safely.
The measurement results will be automatically saved to the SD card at the
end of the measurement. The prompt "Press <OK>" will be displayed in
the second line. After following this prompt, the results will be visible to
you (if GPS is switched on, there is a short waiting time "Wait for GPS").
The measurement process is now finished.
You can also perform your measurements without an SD card. However,
the measurements will then be saved only in the internal memory. For
further processing, the data must be saved on an SD card. When starting
the measurements, the message will appear that the measurements
cannot be saved.
Measure: 300mm/10kg
Execude 1st pulse
Measure: 300mm/10kg
s1: 0,431 mm
Execude 2nd pulse
Result
No: 20 16.09.20 12:12
Sm: 0.429 mm
s/v: 1.981
E: 52.45 MN/m
300mm/10kg
vd
2
Measure
No card inserted!
Use built-in memory
Press <OK>

(3) sm= mean settlement in mm
(4) s/v = degree of compactability
(5) E= dynamic deformation modulus in MN/m² (MPa)
(6) Geographical coordinates (only for GPS module)
15
4.5 Printing the Measurement Results
4.4 Displaying the Measurement Results and Settlement Curves
Result
No: 20 16.09.20 12:12
Sm: 0.512 mm
s/v: 1.981
E: 43.95 MN/m
300mm/10kg
vd
2
In the results overview, you have in front of you the screen on the right.
The lines have the following meaning:
(1) Display mode and text entry, if necessary.
(2) Sequential number (only if SD card is inserted), date and time of the
measurement.
vd
To display settlement curves and the individual settlement values,
press the <Mode> key.
You can print the log if you connect the electronic measuring device to the
printer and press the <Print> key.
The printout contains the data listed under point 4.4, additionally the indi-
vidual settlements and velocities as well as free fields for handwritten
notes.
4.6 After the Measurement
When your measurements are finished, you can switch off the instrument by pressing the <ON/OFF>
key. If you still want to take further measurements, no further setting is required and you can continue
with the next measurement by pressing the <OK> key.
After each measuring process, remove any debris from the drop weight such as soil, sand, clay or dust
and secure the drop weight (transport safety lock, see also point 6).
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:
• The ground is too soft (v > 4.000 mm/s or s > 20 mm).
• The ground is too hard (s < 0.1 mm).
• There is a contact problem with the jack.
• The sensor connection cable is broken (cable break).
• The acceleration sensor may be defective.
In these cases, the measurement with the device can no longer be performed. Check
the sensor connection cable and the cable connection. If necessary, perform a self-test
with the device (see section 5.8.1).

Delete Flash
0023.ZXZ
Are you sure?
<OK> Delete
<OFF> Escape
Delete SD
0023.ZXZ
Are you sure?
<OK> Delete
<OFF> Escape
16
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.
Changed settings are saved by pressing the <ON/OFF> key. This key is also used to exit the menu.
5.1 Measuring
This menu item starts the measuring process. You only need to select this menu item if you have
previously made changes to the settings.
5.2 Reading the Card
Here you can read the data that are already stored on the SD card.
Press the <Mode> button to enter the menu. Scroll to the "read card" menu sub-item using the
<Mode> key. Open the sub-menu by pressing the <OK> key.
• The first thing you will see in the display is the last saved data record, which shows the sequen-
tial number of the individual measurement called up, the total number of measurements saved,
date and time of the stored single measurement, and the mean settlement, s/v value and Evd
value.
• Using the <+> and <-> keys, scroll through the stored individual measurements.
• Pressing the <Mode> key will take you to the second results page, which contains the settle-
ment curves and the three individual settlements. Geographical coordinates are displayed here,
if provided by the system.
• Press the <Print> key to print out the respective log (see also Section 4.4).
5.3 Deleting the Measurement
This function allows you to delete the last saved measurement.
Press the <Mode> key to call up the menu. Scroll to the "Delete measurement"
sub-menu using the <Mode> key. Open the sub-menu by pressing the <OK>
key. The following screen will appear.
In the example, the last measurement has the test number 23. By pressing the
<OK> key, you can delete permanently the measurement.
5.4 Deleting the Card
This function allows you to delete all data sets contained on the SD card in the "ZFG" folder in one
step. The number of measurements that will be deleted is displayed for information.
Press the <Mode> key to call up the menu. Scroll to the "Delete map" sub-menu using the <Mode>
key. Open the sub-menu by pressing the <OK> key.
Display ZFG 3.0 without SD card,
Flash = Internal Memory
Display ZFG 3000 with SD card

17
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" menu appears as the first selection option in the "Settings". Select with the <+> and
<-> key to select the desired language. The following languages are available:
· German · Polish · Portuguese · Russian
· English · Italian · Slovenian/Croatian · Chinese
· French · Spanish · Serbian
Save your selection with the <ON/OFF> key.
5.5.2 LCD Contrast
Here you can change the pixel brightness of the display.
In the "Settings" menu, scroll with the <Mode> key to the sub-menu "LCD Contrast". Adjust the
brightness with the <+> and <-> key and save your settings with the <ON/OFF> key.
5.5.3 Type
Here you can change the selected measurement type if the device is designed for several measure-
ment types (e.g. 300 mm/10 kg, 300 mm/15 kg, 150 mm/10 kg, 150 mm/5 kg, CBR, etc).
In the "Settings" menu, scroll with the <Mode> key to the sub-menu "Type". Select the desired type
with the <+> and <-> key and save your selection with the <ON/OFF> key.
5.5.4 Unit
You can display the unit of the Evd-value in MN/m² or in MPa. In the "Settings" menu, scroll to the
"Unit" sub-menu with the <Mode> key. Select the desired unit with the <+> and <-> keys and save
your selection with the <ON/OFF> key.
5.5.5 Text Input
With the help of the text input, you can add text to the measurement. You will find this on the printout
and in the saved file on the SD card. When you read the file into the software for further processing
on the computer, you will find the added text under the "Remarks" field.
When changing the loading device (10, 15 kg) or the bearing plate (150, 300 mm), the
settlement measuring device must be manually switched to the changed measuring type!

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5.5.6 Preloading
With this sub-menu, you can activate or deactivate the recording of the preloading impacts, which
take place before the actual measurement.
5.5.7 GPS
This function is only available on devices with a GPS module and can be switched on or off in the
"Settings" menu.
A GPS (Global Position System) is used to determine the location. The installed GPS module receives
navigation satellite signals to determine the position in open terrain. Under cover and indoors, recepti-
on is only possible to a limited extent.
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" in the settings).
You will be shown an alphabet with a sequence of numbers and special characters. An underscore
marks your current position with the cursor. You can change the position by pressing the <+> and <->
key.
Using the <Print> button, you can add the selected character to the text. Your text can consist of a
maximum of 16 characters. You will find your text in the bottom line on the display.
By pressing the <Mode> key you can delete the last character. The entered text will be carried over for
the next measurement unless you cancel the text entry or the measurement by pressing the
<ON/OFF> key.
Textinput
0123456789ABCDEF
GHIJKLMNOPQRSTUV
WXYZ/-+._,#
Use the <+> and <-> keys to select the characters you want for the text
(<PRINT> selects, <MODE> deletes) and save your selection with the
<ON/OFF> key.
When starting the measurement, the screen for entering text appears before
the prompt to perform the preloading (see image on the right).
Preloading impacts are performed in the same way as measurement impacts. By
default, the preloading impacts are activated. The results of the preloading impacts are
not included in the measurement result and are not saved.
In the "Settings" menu, scroll with the <Mode> key to the sub-menu "Preloading". Use the <OK> key
to switch preloading "On" or "Off". The results of the preloading impacts are not included in the mea-
surement result and are not saved.
If the text contains a digit as the last character, the instrument automatically counts up
from this digit for the next measurements in ascending order from this digit (automatic
numbering). This function is well suited for counting measurements within a test lot.

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5.6 Setting the Clock
In this sub-menu, you can set the time and date of the device.
Press the <Mode> key to enter the menu. Scroll with the <Mode> key to the sub-menu "clock
settings".
Open the sub-menu by pressing the <OK> key. The current value is marked with an underscore. You
can change the value by pressing the <+> and <-> keys to set it. You can move to the next value by
pressing the <Mode> key.
Press the <ON/OFF> key to save the settings and exit the "Clock Settings" menu.
5.7 Info
Here you can display the instrument data (version, instrument number, calibration factor, calibration
date and language).
Press the <Mode> key to call up the menu. Scroll to the "Info" sub-menu using the <Mode> key. Open
the sub-menu by pressing the <OK> key.
When opening the menu, the "ppm" value can also be changed. This is responsible for
the accuracy of the clock. Change the value only if the clock is too fast or too slow.
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> button.
When the GPS module is on, the power consumption increases. With one set of batte-
ries, you can perform approx. 150 measurements with GPS display.
5.5.8 Coordinates
This function is only available for devices with GPS module.
Depending on the setting, the coordinates are displayed as latitude and longitude (Lat/Lon) or accor-
ding to the UTM system (Universal Transverse Mercator).
In the "Settings" menu, scroll with the <Mode> key to the sub-menu "Coordinates". Use the <+> and
<-> keys to select the desired setting and save your selection with the <ON/OFF> key.