OKM FS Future Series User manual

FS Future Serie
®
FS-Thermoscan
8
User’s manual

User’s manual: FS-Thermoscan 2
Any information contained in these operating instructions may be changed without prior notice.
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of merchantability and fitness for a specific purpose. OKM does not assume any responsability for errors in this
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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
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in original or changed form, is absolutely forbitten.
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 – 2007 OKM Ortungstechnik GmbH. All rights reserved.
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www.okm-gmbh.de

Contents 3
Contents
1 Preface 5
2 Technical Specifications 6
2.1 Control Unit ...................................... 6
2.2 Laser Pointer ...................................... 6
2.3 Measurement Readings ................................. 7
3 Scope of Delivery 8
4 Controls 9
4.1 Complete View ..................................... 9
4.2 Front View ....................................... 10
5 Usage 11
5.1 Calibration ....................................... 11
5.2 Usage as stand-alone device .............................. 12
5.3 Usage as optional equipment to eXp 4000 ...................... 13
5.3.1 Thermograph .................................. 14
5.3.2 Thermo Scan .................................. 15
6 Maintenance and Services 17
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User’s manual: FS-Thermoscan 4
List of Figures
1 Scope Of Delivery ................................... 8
2 Complete View ..................................... 9
3 Front View ....................................... 10
4 Schema of the thermal distribution of cavities .................... 11
5 Measurement with FS-Thermoscan .......................... 12
6 Temperature sequence of a measurement on the hillside .............. 13
7 The operating modes Thermograph and Thermo Scan of eXp 4000 . . . . . . . . 13
8 The Operating Mode Thermograph On The eXp 4000 ............... 14
9 Measurement with eXp 4000 and connected FS-Thermoscan ............ 15
List of Tables
1 Technical Specification (Control Unit) ........................ 6
2 Technical Specification (Laser Pointer) ........................ 6
3 Technical Specification (Measurement Readings) .................. 7
4 Scope Of Delivery ................................... 8
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1 Preface 5
1 Preface
Dear customer,
in the first instance we want to thank you that you made your decision on a product of OKM
Ortungstechnik GmbH.
With our team of specialists we guarantee that our products are under recurrent control. Our
specialists try to implement new developments in terms of further quality improvements for you.
Of course by selling our products we cannot guarantee that you really make a find during your
research. The recognition of hidden objects and structures depends on a hugh number of factors
- like you know. Determining factors are the dielectricity constant of the ground, the grade of
mineralisation and the dimensions of an object relating to its depth. Specially in very wet soil,
clay and sand with high conductivity of the ground, recording of the measured results can be
falsified strongly.
With this product you purchased a device which stood the tests in regular operation like all
other products of us. If you are interested in where our devices have gone into action please
visit our homepage.
For our company it is necessary that we protect our developments within the framework of exist-
ing legislation to a patent or trademark registration. Therewith we offer you a higher warranty
while using our products.
Please take your time consecutively, read this user‘s manual and familiarize yourself with the
utilisation and operation of this FS-Thermoscan.
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User’s manual: FS-Thermoscan 6
2 Technical Specifications
The following technical indications are medial values. During operation small variations are
quite possible.
2.1 Control Unit
Dimensions (L x W x H) ............................................... 35 x 12 x 22 cm
Weight .................................................................... about 0,9 kg
Voltage ........................................................................ 12 VDC
Operating Temperature .................................................... 0  – 50 
Storage Temperature ..................................................... -20  – 60 
Air Humidity ............................................................... 5% – 75%
Waterproof ......................................................................... No
Table 1: Technical Specification (Control Unit)
2.2 Laser Pointer
Laser Class ............................................... 2 (according to EN 60 825-1)
Range ...................................................................... up to 50 m
Wave Length ............................................................. 630 – 680 nm
Maximum Output ............................................................ <1 mW
Table 2: Technical Specification (Laser Pointer)
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2 Technical Specifications 7
2.3 Measurement Readings
Optimal Surface Temperature ............................................. 10  – 25 
Distance / Spot Size Ratio ........................................................ 8 : 1
Field Of View (Flare Angle) ........................................................ 7 ◦
Resolution ...................................................................... 0,01 
Temperature Difference (min. amplification) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 
Temperature Difference (max. amplification) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 
Table 3: Technical Specification (Measurement Readings)
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User’s manual: FS-Thermoscan 8
3 Scope of Delivery
In the following section you can find all standard equipment. The scope of delivery can be dif-
ferent in some circumstances because of some optional accessories which should not be included
in the basic equipment.
1 FS-Thermoscan (Control Unit)
1 External Power Supply
1 Charger For External Power Supply
1 Adapter For External Power Supply
1 User Manual
1 Carrying Case
Table 4: Scope Of Delivery
Beware that pictures in this manual could be different to delivered parts.
FS-Thermoscan (Control Unit)
External Power Supply
Charger For
External Power Supply
Adapter for
External Power Supply
Figure 1: Scope Of Delivery
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4 Controls 9
4 Controls
4.1 Complete View
In figure 2FS-Thermoscan is shown with all its components.
Temperature
Sensor
Analog Display
Handhold
Laser Pointer
Connecting Plug To
External Power Supply Or eXp 4000
Figure 2: Complete View
The Handhold is used to hold the device during the measurement.
On the Analog Display all measured values are visible.
The Laser Pointer marks the position of the recording of the measured value, if activated.
With the Connecting Plug to External Power Supply Or eXp 4000 you can connect the device to an eXp
4000 or via the Adapter Cable to an external battery. You have the possibility to use the device
as a stand-alone unit without any additional devices.
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User’s manual: FS-Thermoscan 10
4.2 Front View
The figure 3shows the front side of the device with all available operating elements.
Analog Display
Regulator Of
Calibration
Power On And Off Button
For Laser Pointer
Regulator Of
Sensibility
Figure 3: Front View
The Power On And Off Button For Laser Pointer is used to switch off and on the laser pointer, which
is situated on the upper side of the control unit. With its help it is possible to do accurate
measurements.
Via the Analog Display the current measure value is represented. The deflection of this display
depends on the adjustment of the calibration and the sensitivity. Further information about the
calibration of the FS-Thermoscan you can find in section 5.1 on page 11.
By using the Regulator Of Calibration you can adjust the indicator of the analog display to the center.
By using the Regulator Of Sensibility you can adjust the range of values of the measurement. So the
device can be aligned to the current temperature differences.
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5 Usage 11
5 Usage
The FS-Thermoscan is a measuring instrument to recognize differences in temperature in the
surrounding area. So it is possible to identify objects and structures of differnet temperature.
Possible applications are
 detection of voids (caves, tunnels, rooms, chests, . . . ),
 visualization of the heat distribution and
 measurement of differences in temperature.
The capacity for the thermal absorption of different materials is an important parameter for the
detection of buried voids. The inspected area heat up itself during the day because of the solar
irradiation evenly. On the areas where no voids are situated under the surface more heat can be
absorbed than in areas where a void is situated under the surface. During the night the ground
emit the saved heat to the environment. During this process areas with subterranean caves,
tunnels or boxes achieve faster the balance of temperature with the surrounding atmosphere.
Thereby a cold zone arise on the surface of the ground on this position where the cavity is
situated under the ground.
Figure 4: Schema of the thermal distribution of cavities
In thermographs (graphical representation of the thermal distribution), which has been done
during the night cold zones can indicate the possible existence of voids.
The FS-Thermoscan can be used as a stand-alone unit or connected as an optionally accessory
to eXp 4000. To receive the optimal deflection of the temperature values you have to calibrate
the FS-Thermoscan before starting the measurement to the current measured field.
5.1 Calibration
To adjust the FS-Thermoscan to the researchable measure field please use the Regulator Of Sensibility
and the Regulator Of Calibration. The Regulator Of Sensibility regulate the amplification and change the
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User’s manual: FS-Thermoscan 12
maximal temperature range. The Regulator Of Calibration moves the indicator of the Analog Display to
the center of the scale (green zone) to indicate positive and negative fluctuations of temperatures.
Point the FS-Thermoscan to the area you like to examine and turn the Regulator Of Sensibility on
the highest position. After that turn the Regulator Of Calibration in this way to the left or right so
that the indicator of the Analog Display is situated in the center of the scale. Now move the FS-
Thermoscan constantly over the area and control the deflection of the indicator. If the indicator
deflect completely to the left or right you have to turn back the sensibility regulator. Therefore
you have to rotate the Regulator Of Sensibility a little bit to the left and repeat the described pro-
cedure. The calibration is finished when the indicator deflects without reaching the limit on the
left or right side.
The smaller the differences in temperature on the measured area, the larger the sensibility should
be. Only in this way small variations in temperature can be visible.
If you are using the FS-Thermoscan out of the adviced temperature of the surface it can happen
that the indicator of the Analog Display cannot be calibrated to the center of the display.
5.2 Usage as stand-alone device
Connect the FS-Thermoscan via the Adapter Cable with the 12V plug socket of the External Power
Supply and power on the External Power Supply. Calibrate the device before starting the measure-
ment and than move the FS-Thermoscan slowely and evenly over the complete area you like to
measure.
Figure 5: Measurement with FS-Thermoscan
The view of the differences of temperature is only represented on the Analog Display, where the
indicator moves to the right (red zone) if the temperatures increase or move to the left (blue
zone) when the temperatures decrease. Observe exactly the deflection of the Analog Display, to
recognize specific changes in temperature. In this way cold and warm zones can be identified
and conclusions to possible inclusions can be made. The quality of the measurement depends
mostly on the calibration which has been done.
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5 Usage 13
Figure 6: Temperature sequence of a measurement on the hillside
Like explained above cold zones can indicate possible cavities. The diagram in figure 6shows
the temperature sequence of a test measurement. The FS-Thermoscan has been pointed hori-
zontally to the hillside and than moved slowely from the left to the right. In the area between
6 and 14 meters a clear decrease of temperature can be recognized – a possible indication for a
subterranean void.
5.3 Usage as optional equipment to eXp 4000
Besides using the FS-Thermoscan as a stand-alone unit it can also be used as an optional equip-
ment to the eXp 4000. If the FS-Thermoscan is used together with the eXp 4000, there are
additional possibilities of graphical analysis besides the Analog Display. So a more accurate survey
of the area is possible.
Figure 7: The operating modes Thermograph and Thermo Scan of eXp 4000
As soon as you connect the FS-Thermoscan to the eXp 4000 the optional accessory will be
recognized automatically by the device and two following operating modes are available:
 Thermograph
The operating mode Thermograph offers additional graphical representations to analyse
the measured values of the FS-Thermoscan.
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User’s manual: FS-Thermoscan 14
 Thermo Scan
In operating mode Thermo Scan you have the possibility to scan a complete area and
create a Thermo Scan (graphical representation).
In the next sections these two operating modes are explained in detail.
5.3.1 Thermograph
The operating mode Thermograph offers a more detailed display of the measured results of FS-
Thermoscan. As soon as the FS-Thermoscan is connected to the eXp 4000 this operating mode
will be available for you.
Digital
Display
Trend
Chart
Snap-
Shot
Figure 8: The Operating Mode Thermograph On The eXp 4000
In figure 8you can see a typical display if you are working in the operating mode Thermograph.
The monitor is subdivided in 3 parts.
 Digital Display
In the Digital display on the upper left part of the monitor the analog measuring values
of the FS-Thermoscan are represented in a digital form. Because of the higher resolution
of this display also smallest variations of the temperature becomes visible.
 Snap-Shot
The snap-shot on the right side of the monitor shows the current increasing or decreasing
measured values. During the Ground Balance the zero point will be determined and all
following measured values will be indicated as a deflection to the top (increasing temper-
ature) or a deflection down (decreasing temperature).
 Trend Chart
The trend chart on the lower part of the monitor show differences in temperature also in
a date back period of about 10 seconds. In this way differences in temperature can be
represented visually.
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5 Usage 15
The operating mode Thermograph can also be used for the Calibration. Do not take attention
to the position of the indicator of the Analog Display, instead of that please take attention to the
deflection of the Snap-Shot.
5.3.2 Thermo Scan
In operating mode Thermo Scan you have the possibility to create a graphical representation
of the distribution of temperatures. Also this operating mode is only available when the FS-
Thermoscan is connected to the eXp 4000.
The scanning of the measured area is generally similiar to the operating mode Ground Scan,
with the only difference that instead of an antenna the FS-Thermoscan is connected to the device.
As soon as you confirmed the operating mode and adjusted all necessary parameters (adjust-
ment of the parameters is explained in the user manual of eXp 4000, operating mode Ground
Scan), you will be asked if you like to do a calibration. If you confirm this question by Yes you
will enter into the operating mode Thermograph. There you have the possibility to calibrate the
FS-Thermoscan via the Analog Display or the digital display of the eXp 4000. After you finished
the calibration of the device, press the button Previous Operating Mode (Arrow-Up) or the button
Next Operating Mode (Arrow-Down) to go back to the operating mode Thermo Scan.
Figure 9: Measurement with eXp 4000 and connected FS-Thermoscan
Now you have to start to scan the field. Therefore you have two possibilities:
 Scan the area as usual
In this method the FS-Thermoscan has to be used like a conventional antenna. Hold the
FS-Thermoscan in your hand and point the Temperature Sensor towards the surface of the
ground. According to your adjustments of the scan mode move the device over the area
while walking next to it, in the parallel or zig-zag mode.
 Scan an area from the distance
Stand in front of the area you like to inspect, hold the FS-Thermoscan in your hand and
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User’s manual: FS-Thermoscan 16
point the Temperature Sensor to the start point of your field. Now you can scan the area by
moving the Temperature Sensor continuously over the measure field. You don’t have to stand
directly over the measure point, it is enough if you orientate the FS-Thermoscan with the
Temperature Sensor to this point. So the area can be measured from distance. Switch on the
Laser Pointer, to focus on every single measure point. This scanning method is especially
interesting in areas with difficult access. So it is possible to inspect rock faces, hillside
situations or similiar structures.
After proceeding the measurement the graphic can be stored, transfered onto a computer and
analysed in the software. All functions of the software are usable but please note that a depth
measurement is not possible in this operating mode. The differences in temperature are only
measured on the surface of the ground and do not allow any indications about the depth.
Warm areas are represented in red color and cold area are shown in blue color. If you are
searching for cavities and are using the above explained measurement principle you have to
inspect especially the blue color parts inside your graphic.
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6 Maintenance and Services 17
6 Maintenance and Services
In this section you will learn how to maintain your measuring instrument with all included ac-
cessories to keep it in good condition a long time and to get good measuring results.
The following list indicates what you absolutely should avoid:
 penetrating water
 strong dirt and dust deposits
 hard impacts
 strong magnetic fields
 high and long lasting heat effect
If you want to clean your device please use a dry rag of soft material. To avoid any damage you
should transport the device and accessories always in the appropriate carrying cases.
Beware that all batteries and accumulators are always charged fully while operating with your
system. You should only load the batteries when they are completely discharged no matter if
you are working with the external power supply or with the internal accumulators. In this way
a long durability of the used batteries is guaranteed.
To load the external and internal batteries you have to use only chargers which are part of our
scope of delivery.
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Index
Adapter Cable, 9,12
Analog Display, 9,10,12,13,15
Calibration, 15
Connecting Plug to External Power Supply Or
eXp 4000, 9
eXp 4000, 13,14
External Power Supply, 12
FS-Thermoscan, 14
Handhold, 9
Laser Pointer, 9,16
Next Operating Mode, 15
Power On And Off Button For Laser Pointer,
10
Previous Operating Mode, 15
Regulator Of Calibration, 10–12
Regulator Of Sensibility, 10–12
Temperature Sensor, 15,16
Thermograph, 15
Digital Display, 14
Snap-Shot, 14,15
Trend Chart, 14
18