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TN_EE-BA-e-2020 

 

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4.9.3  Entering/deleting stored data records 

This function allows the user to enter or delete a data record in a desired, previously 
saved file. The following steps have to be taken:

 

1.  Press the key to 

activate the measurement data acquisition function and to 

read the current file name and the total number of all data sets in the file. 

2.  Use the and 

keys to 

highlight the desired file. 

3.  Press the key to 

open the desired file and the display shows the current data 

set (e.g. L012) and its contents. 

4.  Use the and  keys to 

select the desired data record. 

5.  Press the key

 at the desired position. It is now automatically deleted and the 

display shows "-DEL". 

6. 

This program can be exited at any time with the key and the measuring mode 

can be returned to. 

4.10  EL Backlight 

This  allows  it  to  be  used  in  a  dark  environment.  The  key 

is  used  to  activate  and 

deactivate  the  backlight  once  the  meter  has  been  turned  on.  Since  the  EL  light 
consumes a lot of power, it should only be switched on when needed. 

4.11  Battery information 

Two AA alkaline batteries are required as energy source. After several hours of use, 
the display will show the symbol

. The larger the black portion in the symbol, the 

fuller  the  battery  is.  When  the  battery  capacity  is  exhausted,  the  following  symbol 
appears 

and starts flashing. The batteries should now be replaced. 

When changing the polarity must be observed. 
If the device is not used for a longer period of time, the batteries should be removed. 

4.12  Automatic switch-off 

The  device  has  an  automatic  switch-off  function  to  save  the  batteries.  If  no  key  is 
pressed for more than 5 minutes, the unit switches off automatically.  
It also switches off when there is insufficient battery voltage and the battery is almost 
exhausted.  

4.13  Establishing the basic setting of the system (reset) 

The key 

is pressed during power-up to restore the factory settings. All memory data 

is also deleted. This procedure can be helpful if the parameter in the meter has become 
unusable. 

4.14  Connection to the computer 

The device is equipped with a USB port. With an additional cable the device can be 
connected to the computer or to an external storage medium. The measurement data 
stored in the instrument can be transferred to the computer via the USB connection. 
For  detailed  information  on  the  communication  software  and  its  application,  please 
refer to the respective software operating manual. 

Summary of Contents for TN-EE

Page 1: ...en e mail info kern sohn com Phone 49 0 7433 9933 0 Fax 49 0 7433 9933 149 Internet www sauter eu Instruction Manual Multi Mode Ultrasonic Material Thickness Gauge SAUTER TN EE Version 2 0 04 2020 GB TN_EE BA e 2020 PROFESSIONAL MEASURING ...

Page 2: ...2 Control panel and display layout 5 2 1 Explanation of the key symbols 6 3 Preparation for commissioning 6 3 1 Selection of the sound generator 6 3 2 Conditions and preparations for surfaces 8 4 Mode of operation 9 4 1 Switching on and off 9 4 2 Selecting the measuring mode 9 4 3 Zero Calibration 10 4 4 Calibration of the sound velocity 10 4 5 perform measurements 12 4 6 Scan mode ultrasound imag...

Page 3: ...mmunication USB 1 1 Ambient temperature 20 C 60 C max air humidity 90 Dimensions 150x74x32mm Weight 245g 1 2 Main functions 1 Universal application Operation in pulse echo and echo echo mode 2 Possibility to measure the thickness of various materials such as metal plastic ceramics composites epoxy resins glass and other materials with good ultrasonic conductivity 3 Special applications possible wi...

Page 4: ...ial The result is expressed by the following formula 2 t v H H Material thickness of the test object V sound velocity of the corresponding material t the measured transit time for the sound 1 4 Configuration No Element Qu ant ity Comment Standard configuration 1 Unit Main body 1 2 Sensor P5EE 5 MHz Ø 10 mm 1 3 Coupling means 1 4 Measuring instrument bag 1 5 Operating instructions 1 6 Alkaline batt...

Page 5: ...st appear while measurements are being taken If this is not the case the instrument has problems obtaining stable measurements and it is very likely that deviations will occur 2 Unit mm or inches for the material thickness m s or in µ s for the speed of sound 3 Battery indicator shows the remaining capacity of the batteries 4 Information on the display The determined material thickness value and t...

Page 6: ...uld send sufficient ultrasonic energy into the material to be measured so that a strong stable echo arrives at the instrument Certain factors influence the strength of the ultrasound as it is transmitted These can be read in the following The initial signal strength The stronger a signal is from the beginning the stronger the returning echo will be The initial signal strength is mainly a factor of...

Page 7: ... These are built in such a way that they can be used at high temperatures for special materials and techniques without suffering damage In addition care must be taken when performing a zero calibration or calibration with known material thickness using a high temperature transducer The selection of a suitable sound generator is often a compromise between different influences and characteristics So...

Page 8: ...on of the ultrasonic waves through the material resulting in unstable incorrect measurement results The surface to be measured should be clean and free of any substances rust or verdigris If this is the case the transducer cannot be placed cleanly on the surface Often a wire brush or scraper is helpful to clean the surface In extreme cases belt grinders or the like can be used However it is import...

Page 9: ...or 5 minutes it switches off automatically 4 2 Selecting the measuring mode It often happens that the thickness of pipes or containers is to be measured when used outside Usually the paint layer or any other layer must be removed before the measurement Otherwise the certain error caused by the thickness of the respective layer as well as the speed of sound must be taken into account With the ultra...

Page 10: ...point the instrument has successfully calculated the internal error factor and will compensate for it in all subsequent measurements If a zero calibration is performed on the instrument it will always use the sound velocity of the zero plate installed in the instrument even if a different sound velocity value has been entered to make current measurements Although the instrument retains the last ze...

Page 11: ...he display will now show the sound velocity value previously calculated based on the material thickness 8 To exit the calibration mode press the key to return to the measuring mode From now on measurements can be made 4 4 2 Calibration at known sound velocity Note For this procedure the sound velocity of the material to be measured must be known 1 Press the key to activate the calibration mode The...

Page 12: ...urement can now be started in the preprogrammed measuring range 4 5 perform measurements The meter always stores the last measured value until a new value is added For the sound generator to function properly there must be no air bridges between its contact surface and the surface of the material to be measured This is achieved with the ultrasonic gel the coupling agent This liquid couples or tran...

Page 13: ...asured the instrument automatically searches for the smallest reading The transducer can be scrubbed over the surface because short interruptions of the signal are ignored In the case of interruptions lasting longer than two seconds the smallest measured value found is displayed If the transducer is lifted the smallest measured value found is also displayed When the scan mode is switched off the s...

Page 14: ...e which allows the user to create a new list of measurements in memory location L00 The procedure is as follows 1 Press the key to activate the measurement data acquisition function and to read the current file name and the total number of all data sets in the file 2 With the and key you can scroll back and forth in the file until the corresponding file is found 3 At the desired file press the but...

Page 15: ...al hours of use the display will show the symbol The larger the black portion in the symbol the fuller the battery is When the battery capacity is exhausted the following symbol appears and starts flashing The batteries should now be replaced When changing the polarity must be observed If the device is not used for a longer period of time the batteries should be removed 4 12 Automatic switch off T...

Page 16: ...hen taken as the exact measurement of this point Measuring coated materials Coated materials are special because their density and therefore the speed of sound can vary considerably from one piece to another Even through a single surface noticeable differences in the speed of sound can be detected The only way to obtain an accurate measurement result is to first perform a calibration on a material...

Page 17: ...e wood fiberglass and some rubber Coupling means All ultrasonic applications require a medium to transmit the sound from the transducer to the test material Typically this is a very viscous medium Ultrasound cannot be efficiently transmitted through air A variety of coupling means is used For most applications propylene glycol should be used Glycerine is recommended for difficult applications as m...

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