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Sauter GmbH

 

Tieringerstr. 11-15 

Tel:  +49-[0]7433- 9976-174 

D-72336 Balingen 
E-Mail: [email protected]

 

Fax: +49-[0]7433-9976-285 
Internet: www. sauter.eu 

 

 

 

Instruction Manual 

TU_US 

 

 

TU_US-BA-e-1110  

7

 

distinguishes from the value shown while the transducer 
was coupled, step 4 is to be repeated. 

6) The 

 and the 

 key are to be used to adjust the 

material thickness up and down until it matches the 
material thickness of the sample piece. 

7) The 

 key has to be pressed to confirm. The hint will 

change to “NO2” indicating to be ready to measure the 
second calibration point. 
8) Steps 3 to 7 are to be repeated. The hint will change 
back to “DPC”. 
The instrument is now ready to perform measurements 
within its range. 
 

4.7 Scan mode 
 

While the instrument excels in making single point 
measurements, it is sometimes necessary to examine a 
larger region, searching for the thinnest point. This 
instrument includes a feature, called SCAN- Mode, which 
allows to do just that. 
During normal operation, it performs and displays four 
measurements every second which is adequate for single 
measurements. In SCAN- Mode, however, the instrument 
performs ten measurements every second and displays 
the readings while scanning. While the transducer is in 
contact with the material to be measured, it is always 
keeping track to finding the lowest measurements. The 
transducer may be “scrubbed” across the surface, any 
brief interruptions of the signal will be ignored. If it looses 
contact with the surface for more than two seconds, the 
instrument will display the smallest measurement it found. 

On the 

Test Set

】 -

>

Work mode

menu item the  

 

key has to be pressed to toggle between single point mode 
and scan mode. 
 

4.8 Limit set 

 
With the Limit set feature the user is able to set an audible 
and visual parameter while taking measurements. 
If a measurement is beyond the limit range, set by the 
user, the beeper will sound, if enabled. With this, the 
speed and efficiency of the inspection process is improved 
by elimination of constant viewing of the actual reading 
displayed. In the section below it is described how to set 
up this feature: 
1) On the 

Test Set

】 -

>

Tolerance Limit 

menu item the  

 key has to be pressed to activate the limit set screen. 

2) The 

 key, the 

 and 

 key are to be used to 

change the bottom limit and the upper limit value to the 
desired values. 

3) The 

 key has to be pressed to confirm the change 

and to return to the previous screen, or the 

 key has to 

be pressed to cancel the change. 

If the measurement range is exceeded, the user will be 
reminded to re-set. If the bottom limit is larger than the 
upper limit, the values will be exchanged automatically. 
 

4.9 Changing resolution 
 

The instrument has got a selectable display resolution, 
which is 0.1 and 0.01mm. 

On the 

Test Set

】 -

>

Resolution

menu item the 

 key 

has to be pressed to switch between “high” and “low”. 
 
 
 

4.10 Unit scale 

On the 

Test Set

】 -

>

Unit 

menu item the 

 key has 

to be pressed to switch back and forth between imperial 
and metric units. 
 

4.11 Memory management 
4.11.1 Storing a reading 
 

There are 20 files (F00-F19) which can be used to store 
the measurement values inside the instrument. 
At most 99 records can be stored in each file. 
The following steps outline how to do this: 

1) The 

 key has to be pressed to activate the 

File Name

item on the main measurement screen. 

2) The 

 and 

 key are to be used to select the desired 

file to save the data. 

3) After a new measurement reading appears, the 

 key 

has to be pressed to save the measurement value to the 
current file. If the 

Auto Save 

function is activated, the 

measurement value will be automatically saved to the 
current file after a new measurement operation. 
 

4.11.2 Viewing a stored reading 

The 

 key has to be pressed multiple times until the  

Record No 

area on the measurement screen is 

highlighted. The  

 and 

 key are to be used to change 

the record number. The stored values, according to the 
record number from the memory, will be automatically  
read. They are displayed on the “Thickness reading” area 
of the screen simultaneously. 
If the displayed record data shall be deleted from the 

memory, the 

 key has to be pressed. 

The other way to view the stored record is by menu 
operations. On the 

Memory Manager

】 -

>

View Mem 

Data

menu the 

 key has to be pressed to activate the 

memory viewing screen. 
 

Summary of Contents for TU-US

Page 1: ...Appendix A Sound velocities Appendix B Application notes 8 Declaration of conformity 1 Overview The Model TU US is a digital ultrasonic thickness gauge Based on the operating principles as SONAR it is capable of measuring the thickness of various materials with an accuracy as high as 0 01 mm or 0 001 inches It is suitable for a variety of metallic and non metallic materials 1 1 Product Specificati...

Page 2: ...d then multiplied by the velocity of sound in the material The result is expressed in following relationship 2 t v H Where H thickness of the test piece v sound velocity in the material t the measured round trip transit time 1 4 Configuration No Item Quan tity Note 1 Main body 1 2 Transducer 1 Model N05 90 3 Couplant 1 4 Instrument Case 1 5 Operating Manual 1 6 Screwdriver 1 7 Alkaline battery 2 A...

Page 3: ...oll down Data Save or Data Delete 3 Preparation 3 1 Transducer Selection With this instrument it is possible to measure a wide range of different materials started from various metals to glass and plastics These different types of material require the usage of different transducers Choosing the correct transducer is the most important thing to perform accurate and reliable measurements Generally s...

Page 4: ...d the transducer in place Only moderate pressure is sufficient to keep it stationary Its surface must be placed flat against the surface of the material Table 3 1 Transducer selection Mo del Freq MHZ Dia metr mm Measurement range Lower limit Description N02 2 22 3 0mm 300 0 20 For thick high mm in steel 40mm grey Cast iron HT200 ly attenuating or highly scattering materials N05 5 10 1 2mm 230 0 mm...

Page 5: ...this value in all following measurements When performing a Zero adjustment the instrument will always use the sound velocity value of the in built control plate even if any other velocity value has been entered for making actual measurements Though the last Zero adjustment will be stored it is generally recommended to perform a Zero adjustment whenever the instrument is turned on as well as if a d...

Page 6: ...s to be pressed firmly against the area being measured The coupling status indicator should appear on the display as well as a digit number If the instrument has been zeroed properly and if it has been set to the correct sound velocity the actual thickness of the material directly beneath the transducer will be indicated as a number in the display If the coupling status indicator doesn t appear or...

Page 7: ...In the section below it is described how to set up this feature 1 On the Test Set Tolerance Limit menu item the key has to be pressed to activate the limit set screen 2 The key the and key are to be used to change the bottom limit and the upper limit value to the desired values 3 The key has to be pressed to confirm the change and to return to the previous screen or the key has to be pressed to ca...

Page 8: ... entered and the Print current menu item has to be highlighted Then the key has to be pressed This operation will send all data of the current file to the mini printer via RS 232 port and print them out 4 12 2 Print selected file The Print function menu screen has to be entered and the Print Memory menu item has to be highlighted Then the key has to be pressed After specifying the start file name ...

Page 9: ...an external storage device Measurement data stored in the memory can be transferred to the PC through the RS 232 port For detailed information of the communication software and its usage refer to the software manual 5 Menu operation Both presetting system parameters and the additional function are verified by menu operation On the measurement screen the key has to be pressed to get into the main m...

Page 10: ...erpendicular at right angle to the long axis of the pipe For smaller pipe diameters two measurements should be performed one with the surface gap of the sensor perpendicular another with the gap parallelto the long axis of the pipe The smaller one of the displayed values should be taken as the thickness of that point Measuring hot surfaces The sound velocity through a substance is dependent on its...

Page 11: ...ltrasonic application requires some medium to couple the sound from the transducer to the tested material Typically a high viscosity liquid is used as the medium The sound used in ultrasonic thickness measurement doesn t travel through air efficiently A wide variety of coupling mediums may be used Propylene glycol is suitable for mostly all applications In difficult applications where a maximum tr...

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