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Mul-ti Mode

Ultrasonic Thickness Gauge

MT180/190

User’s Manual

MITECH CO.,LTD.

www.mitech-ndt.com

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Содержание mt180

Страница 1: ...Mul ti Mode Ultrasonic Thickness Gauge MT180 190 User s Manual MITECH CO LTD www mitech ndt com ...

Страница 2: ...ion of Surfaces 6 4 Operation 6 4 1 Power On Off 6 4 2 Setting the Measurement Mode 6 4 3 Perform Probe Zero 6 4 4 Sound Velocity Calibration 7 4 5 Making Measurements 8 4 6 Scan mode 9 4 7 Changing Resolution 9 4 8 Changing Units 9 4 9 Memory Management 9 4 10 EL Backlight 10 4 11 Battery Information 10 4 12 Auto Power Off 10 4 13 System Reset 10 4 14 Connecting to a Computer 10 5 Servicing 10 6 ...

Страница 3: ...ass and other ultrasonic wave well conductive materials Transducer models are available for special application including for coarse grain material and high temperature applications Probe Zero function Sound Velocity Calibration function Two Point Calibration function Single point mode and Scan mode Seven measurements readings per second in single point mode and sixteen per second in Scan Mode Cou...

Страница 4: ...z 5 DataPro Software 1 6 Communication Cable 1 1 5 Operating Conditions Operating Temperature 20 60 Storage Temperature 30 70 Relative Humidity 90 The surrounding environment should avoid of vibration strong magnetic field corrosive medium and heavy dust 2 Structure Feature 1 The main body 2 Keypad 3 LCD display 4 Pulser socket 5 Receiver socket 6 Probe zero disc 7 Communication port 8 Label 9 Bat...

Страница 5: ...ct transducer for a job is critical to being able to easily perform accurate and reliable measurement The following paragraphs highlight the important properties of transducers which should be considered when selecting a transducer for a specific job Generally speaking the best transducer for a job is one that sends sufficient ultrasonic energy into the material being measured such that a strong s...

Страница 6: ...trasonic sound waves that the instrument uses to calculate the thickness of the material being measured The transducer connects to the instrument via the attached cable and two coaxial connectors When using transducers the orientation of the dual coaxial connectors is not critical either plug may be fitted to either socket in the instrument The transducer must be used correctly in order for the in...

Страница 7: ...e perpendicular to the material surface In this case it will be difficult to exactly locate tiny irregularities in the material being measured as the focus of the sound beam no longer lies directly beneath the transducer 4 Operation 4 1 Power On Off The instrument is turned on by pressing the key When the gauge is turned on it will first perform a brief display test by illuminating all of the segm...

Страница 8: ...ound velocity for the material being measured Different types of material have different inherent sound velocities If the gauge is not set to the correct sound velocity all of the measurements the gauge makes will be erroneous by some fixed percentage The One point calibration is the simplest and most commonly used calibration procedure optimizing linearity over large ranges The Two point calibrat...

Страница 9: ...d thickness changes from the value shown while the transducer was coupled repeat step 3 Press the key The MM or IN symbol should begin flashing Use the key and the key to adjust the displayed thickness up or down until it matches the thickness of the sample piece Press the key The display will flash 1OF2 Repeat steps 3 through 6 on the second calibration point Press the key so that The M S or IN μ...

Страница 10: ...asured the gauge is keeping track of the lowest measurement it finds The transducer may be scrubbed across a surface and any brief interruptions in the signal will be ignored When the transducer loses contact with the surface for more than two seconds the gauge will display the smallest measurement it found When the transducer is removed from the material being scanned the gauge will display the s...

Страница 11: ...needed as the power source After several hours usage of the preset batteries the battery symbol on the screen will be shown as The more of dark part indicates the more close to fill When the battery capacity runs out the battery symbol will be shown as and will begin to flash When this occurs the batteries should be replaced Please take out the batteries when not working during a long period of ti...

Страница 12: ... 0 091 2311 Teflon 0 056 1422 Water 0 058 1473 Note the sound velocity shown is approximately for reference only Appendix B Applications Notes Measuring pipe and tubing When measuring a piece of pipe to determine the thickness of the pipe wall orientation of the transducers is important If the diameter of the pipe is larger than approximately 4 inches measurements should be made with the transduce...

Страница 13: ...y calibrating to each test piece individually the effects of variation of sound velocity will be minimized An additional important consideration when measuring laminates is that any included air gaps or pockets will cause an early reflection of the ultrasound beam This effect will be noticed as a sudden decrease in thickness in an otherwise regular surface While this may impede accurate measuremen...

Страница 14: ...temperatures may include water various oils and greases gels and silicone fluids Measurements at elevated temperatures will require specially formulated high temperature couplants 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 while in standard pulse echo mode Th...

Страница 15: ...nline reporting to repair sheet In accordance with the international relevant regulations the following are not within the scope of free warranty Damage caused by man made or improper keeping Self dismantle or non special repair shop dismantle Do not follow the requirement of service registration or warranty expired Consumable parts Service promise MITECH users have lifelong maintenance service Fr...

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