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TGD-100 

 

Ultrasonic Thickness Gauge   

 

Instruction Manual

   

 
 
 
 
 

VER:3.1 

 
 
 
 
 
 
 

Summary of Contents for TGD-100

Page 1: ...TGD 100 Ultrasonic Thickness Gauge Instruction Manual VER 3 1 ...

Page 2: ... 4 MEASUREMENT OF THICKNESS 8 3 5 ZERO CALIBRATION 8 3 6 MEASUREMENT OF SOUND VELOCITY 9 3 7 SETTING ALARM THICKNESS LIMITS 10 3 8 MENU OPTION 10 3 8 1 SYSTEM SETUP 10 3 8 2 PRINT FUNCTION 12 3 8 3 MEMORY MANAGE 14 4 DATA LOGGER OPERATION 14 4 1 LOGGING READINGS INTO MEMORY 14 4 2 REVIEWING STORED THICKNESS READINGS 15 4 3 CLEARING CURRENT THICKNESS VALUE 15 5 MEASURING TECHNOLOGY 15 5 1 CLEANING ...

Page 3: ... ERROR IN IDENTIFYING MATERIAL 21 6 4 WEARNESS OF PROBE 21 6 5 OVERLAPPED MATERIAL AND COMPOUND MATERIAL 21 6 6 INFLUENCE OF OXIDATION LAYER AT METAL S SURFACE 21 6 7 ABNORMAL READOUT OF THICKNESS 22 6 8 UTILIZATION AND SELECTION OF COUPLING AGENT 22 7 ATTENTION 22 7 1 CLEANING THE TEST PIECE 22 7 2 CLEANING THE INSTRUMENT S CASE 23 7 3 PROTECTING THE PROBE 23 7 4 REPLACING BATTERIES 23 7 5 ABSOLU...

Page 4: ...The ultrasonic wave emitted from the probe reaches the object and transmits in it When the ultrasonic wave reaches the bounding surface of the material it is reflected back to the probe The thickness of the material can be determined by accurately measuring the time of the ultrasonic wave transmitting in it 1 3 Measuring Principle The digital ultrasonic thickness gauge determines the thickness of ...

Page 5: ...data Calibration standard block of 4 00mm Function selector Adjusting sound velocity and thickness key for moving menu cursor Adjusting sound velocity and thickness key for moving menu cursor 2 point calibration to be used together with function keys 1 6 Display symbols THICKNESS GUAGE Ultrasonic ...

Page 6: ...rements readings per second for single point measurement Memory for up to 5 files up to 100 values for each file of stored values 2 2 Main Functions 1 Capable of performing measurements on a wide range of material including metals plastic ceramics composites epoxies glass and other ultrasonic wave well conductive materials 2 Transducer models are available for special application including for coa...

Page 7: ... Adjusting sound velocity If the current display is thickness by pressing you can come into speed of sound state and it will display content in current sound velocity memory unit The sound velocity memory unit will change once every time when you press the VEL key it can display 5 sound velocities alternatively If you hope to change the contents in the current sound velocity unit you can adjust th...

Page 8: ...ing probe frequency Press key to move the cursor to the position as that shown in the following figure Press to change the frequency setting LCD will display in sequence the probe frequency to be set 5M 7M or ZW ...

Page 9: ... calibration Select the correct transducer frequency The sound velocity adjusted to 5900m s While the gain is set to use when measuring the gain Then the probe with the case on 4mm standard test block and displayed good coupling signs Zero point calibration by the key Instruments buzzer about the same time the screen instructions to complete the calibration calibrate zero done That the calibration...

Page 10: ... using a test piece with given thickness First measure the test piece with caliper or micron micrometer and read the thickness accurately Couple the probe with the test piece with given thickness till it displays a value remove the probe then adjust the display to the actual thickness with or press now it will display the sound velocity to be measured Save the value into current sound velocity mem...

Page 11: ... will alarm The alarming limit is set as follows 1 Press move cursor to ALARM 2 Press display the low and high limit of previous setting use or to set the new low or high limit 3 To exit the Limit Setting press or start to measure 3 8 Menu option The setting and function of the instrument be handle in Menu option Press move cursor to MENU then Press display main menu 3 8 1 System Setup 1 ...

Page 12: ...rement when the MIN is flashing the former measurements will continue to take part in the min value capturing If you carry out measurement after MIN indicator stops flashing the min value capturing will begin from then on 2 When the Min capture function is ON LCD will have MIN indication 5 2 Point Calibration OFF and ON 1 Select two standard samples of the same material with workpiece to be measur...

Page 13: ...value 9 Press the calibration operation is finished 6 Auto Down Power saving mode ON default 7 Baud Rate 1200 2400 4800 9600 8 Adjusting Display Brightness 1 Press select Set brightness 2 Use or to adjust the display brightness 3 Press exit setup 3 8 2 Print function Connect main unit with micro printer from by the communication cable print measured results through menu selection When the printing...

Page 14: ...13 send measured results through menu selection ...

Page 15: ...he memory unit into 5 files Each can save 100 measurement values Before saving data Please set file number first If you select the current file No you can save the measurement directly by pressing The procedures for setting file No are 1 Use to move the cursor to the position shown in the following figure 2 Press by pressing F1 F5 to display file No s cyclically You can exit by pressing or conduct...

Page 16: ...h surface will cause error in measurement Before measuring please smooth the surface of object by grinding polishing or filing etc or use coupling agent with high viscosity for that 5 3 Rough machined surface The regular fine slots on rough machined by such machines as lathe or planer surface will also cause error in measurement The way for compensating that is the same as that in 5 2 In addition ...

Page 17: ...xial line of the object and take the min readout as the thickness 5 5 Compound profile When the material to be measured has a compound profile such as bend of a pipe one can use the way described in 5 4 to measure The exception is that one should have two analyses get two results when the probe s crosstalk interlayer plate being both parallel and perpendicular to the axial line of the object and t...

Page 18: ...limit of the probe s measuring range one can use test piece to determine the accurate low limit Never measure a material with a thickness lower than the low limit If the thickness range can be estimated the thickness for the test piece should select the high limit When the object is thick especially for alloy with complex internal structure please select a test piece similar to the object from a g...

Page 19: ... measuring way measure with probe at one point twice During the two measurements the probe s crosstalk interlayer plate should be placed in perpendicular direction and take the min readout as the accurate thickness of the material c Multi point measuring way make several measurements in a range and take the min readout as the thickness of the material ...

Page 20: ...cho indication or measured value display without measuring 5 13 Measuring casting It has specialty for measuring casting The crystal particles for castings are coarse the structures are not dense enough plus that they are in gross state which makes difficulty in measuring their thickness First of all due to coarse crystal particles and not so dense structure it will cause large attenuation in soun...

Page 21: ...e will produce inaccuracy in measurement Therefore one must be very careful in measuring castings During measuring castings please pay attention to the following points 1 When measuring casting with un machined surface please use engine oil consistent grease and water glass as coupling agent 2 Calibrate the sound velocity for the object with a standard test piece having the same material and measu...

Page 22: ...ease be careful in selecting correct sound velocity 6 4 Wear of Probe The surface of the probe is allyl resin after long time of usage its roughness will increase and the sensitivity will drop If the user can be sure that this is the reason for error he can grind the surface with sand paper or oilstone to make it smooth and has good parallelism If it is still not stable the probe must be replaced ...

Page 23: ...pling indicator and it will be impossible to measure The coupling agent should be used in proper amount and be coated evenly It is very important to select proper coupling agent When it is used on a smooth surface you d better use an agent with low viscosity such as coupling agent provided along with the instrument and light engine oil etc When it is used on a coarse object surface or vertical sur...

Page 24: ...der normal temperature the temperature of the surface to be measured should not be more than 60 C otherwise the probe can t be used The oil and dirt will age and break the probe line so please remove dirt on the cable after operation 7 4 Replacing Batteries When indication for low voltage occurs please replace batteries on time Turn off the instrument Open the battery chamber Take out the batterie...

Page 25: ...LCD is abnormal c During normal operation the error is too large d The keyboard doesn t function or is in disorder 8 3 Since Thickness Gauge is a high tech product its maintenance should be conducted by professional trained person The user should not disassemble and repair it by himself ...

Page 26: ...her causes within the parameters of the machine error the best approach is to restore the factory parameters as follows Press move cursor to MENU then Press display main menu use or to select About Software Press into About Software Then press key the machine will all the parameters back to factory settings while the machine automatically shut down ...

Page 27: ...tion 1 Main Unit 1 2 Transducer 1 3 Couplant 1 4 Instrument case 1 5 Operating Manual 1 6 1 5V battery 2 7 Optional Configuration 1 Transducer N02 2 Transducer N07 3 Transducer HT5 4 Mini Thermal printer 5 Print cable 6 DataPro Software 7 Communication cable 8 9 ...

Page 28: ...40 0 226 Brass 4399 0 173 Copper 4720 0 186 Iron 5930 0 233 Case Iron 4400 5820 0 173 0 229 Lead 2400 0 094 Nylon 2680 0 105 Titanium 5990 0 236 SUS 5970 0 240 Epoxy resin 2540 0 100 Ice 3988 0 222 Plexiglass 2692 0 106 Gray Cast 4600 0 180 Porcelain 5842 0 230 Glass quartz 5570 0 220 Polystyrene 2337 0 092 PVC 2388 0 094 Quartz glass 5639 0 222 Rubber vulcanized 2311 0 091 Teflon 1422 0 058 Water...

Page 29: ...s Name _Ultrasonic Thickness Gauge _ Products Type Main unit No ___________________________ The product accords with the technical criteria and is allowed to sell QUALITY CONTROL ENGINEER _________________ Inspection date _____________ ...

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