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MiniTest 440

Technical Reference and Operating Manual

Advancing with Technology

Elektro

Physik

VERSION: 3.03

Содержание MiniTest 440

Страница 1: ...MiniTest 440 Technical Reference and Operating Manual Advancing with Technology ElektroPhysik VERSION 3 03 ...

Страница 2: ...rophysik com Disclaimer Inherent in ultrasonic thickness measurement is the possibility that the instrument will use the second rather than the first echo from the back surface of the material being measured This may result in a thickness reading that is TWICE what it should be Responsibility for proper use of the instrument and recognition of this phenomenon rests solely with the user of the inst...

Страница 3: ... 3 Treatment of the measured surface E 7 6 Function operation E 8 6 1 Switch on E 8 6 2 Measurement E 8 6 3 Calibration E 9 6 3 1 Auto calibration E 9 6 3 2 Velocity measurement E 11 6 4 Menu display and operations E 12 6 4 1 Measuring mode E 13 6 4 2 Sound velocity of the instrument E 14 6 4 3 Database E 16 6 4 4 Measurement Unit E 16 6 4 5 Gain setting E 18 6 4 6 Switch off mode E 19 6 4 7 Contr...

Страница 4: ...ology E 21 7 1 Measuring methods E 21 7 2 Pipeline measurement method E 21 8 Maintenance and precautions E 22 8 1 Power check E 22 8 2 Precautions E 22 8 2 1 General precautions E 22 8 2 2 Precaution during the measuring E 22 9 Standard delivery E 23 Appendix E 24 ...

Страница 5: ... digital Measuring range 0 65mm 500 0mm Steel Display accuracy 0 1mm When the measured value is bigger than 100mm 0 01mm When the measured value is less than 100mm Accuracy 0 65mm 9 99mm 0 04mm 10 00mm 99 99mm 0 1 H 0 04 mm 100 0mm 500 0mm 0 3 H Sound velocity 1000m s 9999m s Data storage 10 files including 5000 data Measurement frequency 2 times sec in normal mode 10 times sec in scan mode Zero c...

Страница 6: ...ach the measured work piece One part of then is reflected on the work piece surface and the probe receive the reflected echo By accurately measuring the ultrasonic travel time the thickness will be getting and displayed in figures 4 Complete set spare parts and contents 4 1 Complete set Screen Keypad Battery compartment back cover 1 2 3 6 4 5 ...

Страница 7: ... 2 Display The measured data file groups and the storage data in each file group Probe type Full battery Flat battery indicator Measuring mode Measurement icon and measuring unit The current selected gain method of the amplifier The current selected sound velocity The current measured data ...

Страница 8: ......

Страница 9: ... Press the up key to switch on or off the backlight In menu operation press OK to confirm and ESC to exit In Measurement state press OK to save the current data Shortcut key of calibration Auto calibration second calibration and sound velocity measurement are available Shortcut key Data Press this key to read the stored date Note For the operation of each function key it will give detailed instruc...

Страница 10: ...5 0 5 0MHz 0 8mm 300mm 60 U5HT 5 0MHz 3 0mm 100mm 350 U7 5 7 5MHz 0 65mm 50mm 60 U10 0 10 0MHz 0 65mm 20mm 60 U2 0 2 0MHz 2 0mm 500mm 60 Users can select the suitable probe according to the thickness of the work piece to be measured U5 0E The probe can measure the thickness of work piece through pass the coating under the E E mode and it can be used as the normal probe under the P E mode U5 0 The ...

Страница 11: ...gent with high viscosity for that 2 Use coupling agents on the work piece surface to be measured 3 Take multiple measurements around the same testing point 6 Function operation 6 1 Switch on Select the correct probe and insert it into the probe socket and then press to switch on the instrument the following screen displays If you did not insert the probe before switching on the instrument the scre...

Страница 12: ...nt measured value 6 3 Calibration It will cause error during the primary stage of usage and operating this caused by the following three aspects 1 The probe itself or the temperature variation 2 System error caused by the match of the instrument and the probe 3 Calculation error caused by the sound velocity set in the instrument is different from that of the actual material In order to eliminate t...

Страница 13: ...ration accuracy When the measuring temperature changes greatly it is recommended to use this function to make sure the measurement is accuracy 6 3 2 Velocity measurement Because the work piece is made from various materials and even the same material with different content and processing technology the sound velocity will changed And this change will cause the measuring error If the error is not e...

Страница 14: ...ckness B 4 Press key screen displays as following 5 Select Vel Meas press OK key Screen displays as following 6 Press or key to adjust the sound velocity and make the measured thickness value B is almost or the same with the thickness value A Press OK key to confirm 7 Re measure the sample s thickness and recheck the deviation between the measured value and the actual value If the two values are t...

Страница 15: ...o go to the selected option item Press ESC to exit and go to measuring status 6 4 1 Measurement There are two kinds of measuring modes provided P E mode and E E mode When the P E mode is selected all probes are available When E E mode is selected the probe U5 0E is available only for measuring the thickness through pass the coating ...

Страница 16: ...le for testing the curvature surface or needs to get the minimum value which is widely used in the thickness measurement of pipeline Note it is not recommended to use this function when measuring cast iron or alloy materials 3 Difference display the accurate differential value between the measured value and reference value set by the users suitable for quality check to identifying the qualified pr...

Страница 17: ...e only the true metal thickness Note The probe U5 0E is available for this function only 6 4 2 Sound velocity Sound velocity plays an important role in measurement Different material is of different sound velocity When the sound velocity is incorrect it will cause wrong measured results There are two ways to select the material s sound velocity which are Materials selection and velocity custom 1 P...

Страница 18: ...lease refer to the sound velictiy function and get he more accurate sound velocity The 9 materials are aluminum titanium steel stainless steel glass copper brass polystyrene and nylon 6 4 2 2 Velocity Custom When the sound velocity of 9 materials is not satisfied with the requirements of the users there is a sound velocity tabe which give the sound velocity of various materials in the appendix Use...

Страница 19: ...n users can select a file name 01 10 according to your actual needs Once the file is selected it will become the current file which used to save the measured data 1 Press key select Database Memory set 2 Select the file name press OK to confirm The figure below shows the file is selected but there is no data in it The figure below shows the file is selected and there are storage data in it Note If...

Страница 20: ...in the file will be deleted So users should confirm the invalid data before deleting files or backup the files in your PC 6 4 4 Measurement Unit Users can select the displayed accuracy and the measuring unit When selecting the high accuracy the workpiece surface to be measured should be smooth for the purpose of get a accurate value 1 Press key select Measuring unit 2 Select the unit you want and ...

Страница 21: ...t probe and meets almost the measuring requirements Low Suitable for high scattering and small attenuation materials Medium Suitable for many measurements High Suitable for high attenuation materials 1 Press key select Gain setting 2 Select option press OK to confirm The default set is AUTO 6 4 6 Switch off mode The instrument provides three ways to control the power 1 Without operation in 2 minut...

Страница 22: ...aused by the probe replacement and other factors and it can not eliminated by using the Auto calibration function Please make sure that the error is not caused by the incorrect sound velocity setting at that moment by the function of second calibration the error will eliminated according to the system error The steps are as follows 1 Adjust the sound velocity at 5920 m s 2 Measure the thickness of...

Страница 23: ...iminate any abnormal because of the parameters setting 6 5 Data This function provides the data processing of the stored data of the instrument There are two ways of data processing for the previously stored data 1 Read data select the file and the stored data will be read directly in the instrument screen 2 Data transmission transfer the stored data to the PC via USB interface Note For the detail...

Страница 24: ...any point of the work piece to be measured and the displayed value is the thickness 2 Two point measuring method Perform two measurements on the same point of the measured surface in the second measurement splitting plane of the probe should be 90 degree take the minimum as the thickness value 3 Multiple point measurement method perform several measurements in a circle about 30mm in diameter and t...

Страница 25: ...e the minimum readout as the thickness value 8 Maintenance and precautions 8 1 Power check When the power is low the low battery indicator will appear at this moment users should replace the battery in time or it will affect the measuring accuracy The backlight can not be switched on for a long time because it is a big consumer of electricity Note if the instrument did not used for a long time ple...

Страница 26: ...easured surface when taking away the probe it will cause error so when the measurement is completed please move the probe away from the measured surface quickly 3 If the probe wears out it will cause the displayed value unstable please replace the probe 9 Standard delivery Main unit 1 set Probe U5 0E 1 piece Coupling agent 1 bottle Instrument case 1 piece Certificate 1 piece Instruction manual 1 p...

Страница 27: ...ron Carbide 0 430 11000 Brass 0 170 4300 Cadmium 0 110 2800 Copper 0 180 4700 Glass crown 0 210 5300 Glycerin 0 075 1900 Gold 0 130 3200 Ice 0 160 4000 Inconel 0 220 5700 Iron 0 230 5900 Iron cast 0 180 4600 Lead 0 085 2200 Magnesium 0 230 5800 Mercury 0 057 1400 Molybdenum 0 250 6300 Monel 0 210 5400 Neoprene 0 063 1600 Nickel 0 220 5600 Nylon 6 6 0 100 2600 Oil SAE 30 0 067 1700 Platinum 0 130 3...

Страница 28: ...ylene 0 070 1900 Polystyrene 0 0930 2400 Polyurethane 0 0700 1900 Quartz 0 230 5800 Rubber Butyl 0 070 1800 Silver 0 140 3600 Steel Mild 0 233 5920 Steel Stainless 0 228 5800 Teflon 0 060 1400 Tin 0 130 3300 Titanium 0 240 6100 Tungsten 0 200 5200 Uranium 0 130 3400 Water 0 584 1480 Zinc 0 170 4200 ...

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