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Summary of Contents for MITECH mt180
- Page 1 Mul-ti Mode Ultrasonic Thickness Gauge MT180/190 User’s Manual MITECH CO.,LTD. www.mitech-ndt.com...
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Page 2: Table Of Contents
CONTENTS 1 Overview.............................. 2 1.1 Product Specifications........................2 1.2 Main Functions..........................2 1.3 Measuring Principle........................2 1.4 Configuration...........................2 1.5 Operating Conditions........................3 2 Structure Feature..........................3 2.1 Main Screen............................ 3 2.2 Keypad Definitions......................... 4 3 Preparation............................4 3.1 Transducer Selection........................4 3.2 Condition and Preparation of Surfaces..................6 4 Operation............................. -
Page 3: Overview
1 Overview The model MT180/MT190 is a multi-mode ultrasonic thickness gauge. Based on the same operating principles as SONAR, the instrument is capable of measuring the thickness of various materials with accuracy as high as 0.1/0.01 millimeters. The multi-mode feature of the gauge allows the user to toggle between pulse-echo mode (flaw and pit detection), and echo-echo mode(eliminate paint or coating thickness). -
Page 4: Operating Conditions
Item Qty. Note Main body Probe P5EE Couplant Standard Configuration Instrument Case Operating Manual Alkaline battery AA size Probe N05 (5MHz) Probe N05/90°(5MHz) See Table3-1 Probe N07(7MHz) Optional Configuration Probe HT5(5MHz) DataPro Software Communication Cable 1.5 Operating Conditions Operating Temperature: －20℃～＋60℃;... -
Page 5: Keypad Definitions
1, Coupling Status: Indicate the coupling status. While the gauge is taking a measurement, the coupling status should be on. If it is not on or not stable, the gauge is having difficulty achieving a stable measurement, and the thickness value displayed will most likely be erroneous. - Page 6 While it may seem that using a lower frequency transducer might be better in every instance, low frequencies are less directional than high frequencies. Thus, a higher frequency transducer would be a better choice for detecting the exact location of small pits or flaws in the material being measured.
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Page 7: Condition And Preparation Of Surfaces
P-E: 2~600mm Φ20mm×3.0mm P5EE E-E: 3~100mm Normal Measurement 3.2 Condition and Preparation of Surfaces In any ultrasonic measurement scenario, the shape and roughness of the test surface are of paramount importance. Rough, uneven surfaces may limit the penetration of ultrasound through the material, and result in unstable, and therefore unreliable, measurements. -
Page 8: Sound Velocity Calibration
If the gauge is not zeroed correctly, all the measurements that the gauge makes may be in error by some fixed value. When the instrument is “zeroed”, this fixed error value is measured and automatically corrected for all subsequent measurements. The instrument may be “zeroed ” by performing the following procedure.:... -
Page 9: Making Measurements
4.4.2 Calibration to a known velocity Notes: This procedure requires that the operator knows the sound velocity of the material to be measured. A table of common materials and their sound velocities can be found in Appendix A of this manual. -
Page 10: Scan Mode
If the condition persists, it may be necessary to select a different transducer (size or frequency) for the material being measured. While the transducer is in contact with the material that is being measured, the instrument will perform four measurements every second, updating its display as it does so. -
Page 11: El Backlight
①Press the key to activate the data logging fuctions. It will display the current file name and the total record count of the file. ②Use the key and the key to scroll to the file that will be cleared of all measurements. -
Page 12: Appendix A Sound Velocities
Appendix A Sound Velocities Sound Velocity Material in/µs Aluminum 0.250 6340-6400 Steel, common 0.233 5920 Steel, stainless 0.226 5740 Brass 0.173 4399 Copper 0.186 4720 Iron 0.233 5930 Cast Iron 0.173-0.229 4400－5820 Lead 0.094 2400 Nylon 0.105 2680 Silver 0.142... - Page 13 Measuring hot surfaces The velocity of sound through a substance is dependent upon its temperature. As materials heat up, the velocity of sound through them decreases. In most applications with surface temperatures less than about 100℃, no special procedures must be observed. At temperatures above this point, the change in sound velocity of the material being measured starts to have a noticeable effect upon ultrasonic measurement.
- Page 14 A wide variety of couplant materials may be used in ultrasonic gauging. Propylene glycol is suitable for most applications. In difficult applications where maximum transfer of sound energy is required, glycerin is recommended. However, on some metals glycerin can promote corrosion by means of water absorption and thus may be undesirable.
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Page 15: User Notes
Warranty ： The product is guaranteed for one year since purchased. Log www.mitech-ndt.comor follow our company official public platform to register for maintenance. Please fill the blanks as required, if the product is not registered for maintenance, it will follow the date of manufacturer.
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