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Summary of Contents for MITECH MT280
- Page 1 Ultrasonic Thickness Gauge MT280 User’s Manual MITECH CO., LTD. www.mitech-ndt.com www.ponpe.com...
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Page 2: Table Of Contents
sale@ponpe.com CONTENTS 1 Overview..............................2 1.1 Product Specifications........................2 1.2 Main Functions...........................2 1.3 Measuring Principle...........................2 1.4 Configuration............................3 1.5 Operating Conditions........................3 2 Structure Feature............................4 2.1 Instrument Appearance........................4 2.2 Parts of the Main Body........................4 2.3 Measurement Screen........................5 2.4 Keypad Definitions.......................... -
Page 3: Overview
1 Overview The model MT280 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: Configuration
sale@ponpe.com is expressed in the well-known relationship: Where： H－Thickness of the test piece. v－Sound Velocity in the material. t－The measured round-trip transit time. 1.4 Configuration Table 1-1 Item Qty. Note Standard Main body Configura Probe P5EE tion Couplant Instrument Case Operating Manual Screwdriver... -
Page 5: Structure Feature
2 Structure Feature 2.1 Instrument Appearance 1 Main Body MT280 2 Transducer 2.2 Parts of the Main Body MT280 THICKNESS GAUGE POWER: 2 X 1.5V OPERATION GUIDE 1. Plug in the transducer Power On/Off Backlight On/Off Probe Zero... -
Page 6: Measurement Screen
sale@ponpe.com 1 Communication Socket 2 Aluminum Case 3 Belt Hole 4 Battery Cover 5 Keypad 6 LCD Display 7 Socket of Transducer (no polarity) 8 Probe zero disc 9 Aluminum Case 10 Label 2.3 Measurement Screen Battery Info Operating Hint Thickness Read Coupling Status Units Label... -
Page 7: Keypad Definitions
ponpe.com sale@ponpe.com Battery Information: Display the information of the rest capacity of the battery. Coupling Status: Indicate the coupling status. While the gauge is taking a measurement, the coupling status should be on. If it is not on, the gauge is having difficulty achieving a stable measurement, and the thickness value displayed will most likely be erroneous. -
Page 8: Preparation
sale@ponpe.com 3 Preparation 3.1 Transducer Selection The gauge is inherently capable of performing measurements on a wide range of materials, from various metals to glass and plastics. Different types of material, however, will require the use of different transducers. Choosing the correct transducer for a job is critical to being able to easily perform accurate and reliable measurement. - Page 9 ponpe.com sale@ponpe.com Left figure is a bottom view of a typical transducer. The two semicircles of the wearface are visible, as is the barrier separating them. One of the semicircles is responsible for conducting ultrasonic sound into the material being measured, and the other semicircle is responsible for conducting the echoed sound back into the transducer.
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Page 10: Condition And Preparation Of Surfaces
sale@ponpe.com 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. The surface being measured should be clean, and free of any small particulate matter, rust, or scale. -
Page 11: Sound Velocity Calibration
ponpe.com sale@ponpe.com Use the key and the key to scroll to the probe model currently being used. Be sure to set the right probe model to the instrument. Otherwise, there will be erroneous. Apply a single droplet of ultrasonic couplant to the face of the metal probe-disc. Press the transducer against the probe disc, making sure that the transducer sits flat against the surface. -
Page 12: Making Measurements
sale@ponpe.com 4.4.2 Calibration to a known velocity Note: 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 13: Two Point Calibration
ponpe.com sale@ponpe.com is removed from the surface, the display will hold the last measurement made. Note ： Occasionally, a small film of couplant will be drawn out between the transducer and the surface as the transducer is removed. When this happens, the gauge may perform a measurement through this couplant film, resulting in a measurement that is larger or smaller than it should be. -
Page 14: Limit Set
sale@ponpe.com 4.8 Limit Set The Limit Set feature of the gauge allows the user to set an audible and visual parameter when taking measurements. If a measurement is beyond the limit range, set by the user, the beeper will sound, if enabled. This improves the speed and efficiency of the inspection process by eliminating constant viewing of the actual reading displayed. -
Page 15: System Set
ponpe.com sale@ponpe.com At most eight files, including file name, record counts and the ratio used of the file can be showed screen. Use the to scroll up/down. ↓F07 Press to exit browsing. Press to see details of that file. Press move the cursor to the line which you want to see details. -
Page 16: System Information
Refer to the sketch below during battery replacing. Please pay much attention to the polarity of the battery. Procedure: 1 Power Off the instrument Anode 2 Take off the cover of the MT280 battery and take out the two batteries 3 Insert the new batteries into the instrument 4 Replug the battery cover 5 Power on the instrument to check. -
Page 17: Servicing
sale@ponpe.com ponpe.com information of the communication software and its usage refer to the software manual. 5 Servicing When the hardness tester appears some other abnormal phenomena, please do not dismantle or adjust any fixedly assembled parts. Fill in and present the warranty card to us. The warranty service can be carried on. -
Page 18: Appendix A Sound Velocities
sale@ponpe.com Appendix A Sound Velocities Material Sound Velocity In/us Aluminum 0.250 6340-6400 0.233 Steel, common 5920 0.226 Steel, stainless 5740 0.173 Brass 4399 0.186 Copper 4720 0.233 Iron 5930 0.173-0.229 Cast Iron 4400－5820 0.094 Lead 2400 0.105 Nylon 2680 0.142 Silver 3607 0.128... -
Page 19: Appendix B Applications Notes
ponpe.com sale@ponpe.com 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 transducer oriented so that the gap in the wearface is perpendicular (at right angle) to the long axis of the pipe. - Page 20 sale@ponpe.com measured. Not all materials are good at transmitting sound. Ultrasonic thickness measurement is practical in a wide variety of materials including metals, plastics, and glass. Materials that are difficult include some cast materials, concrete, wood, fiberglass, and some rubber. Couplants All ultrasonic applications require some medium to couple the sound from the transducer to the test piece.
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Page 21: User Notes
Warranty ： The product is guaranteed for one year since purchased. Log www.mitech-ndt.com or 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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