MITECH MT150 User Manual Download Page 12

12

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4.8 Memory Management

4.8.1 Storing a reading

There are twenty files (F00-F19) that can be used to store the measurement values inside the

gauge. At most 100 records (thickness values) can be stored to each file. By simply pressing the
key after a new measurement reading appears, the measured thickness value will be saved to current
file. It is added as the last record of the file. To change the destination file to store the measured
values, follow the steps:

1

Press the

key to activate the data logging functions. It will display the current file name

and the total record count of the file.

2

Use the

key and the

key to select the desired file to set as current file.

3

Press the

key to exit the data logging functions at any time.

4.8.2 Clearing selected file

The user may require the contents of an entire file be completely cleared of all measurements.

This would allow the user to start a new list of measurements starting at storage location L00. The
procedure is outlined in the following steps.

1

Press the

key to activate the data logging fuctions. It will display the current file name and

the total record count of the file.

2

Use the

key and the

key to scroll to the file that will be cleared of all measurements.

3

Press the

key on the desired file. It will automatically clear the file, and display “-DEL”.

4

Press the

key, at any time, to exit the data logging functions and return to measurement

mode.

4.8.3 Viewing/deleting stored record

This function provides the user with the ability to view/delete a record in a desired file previously

saved in memory. Following is the steps:

1

Press the

key to activate the data logging functions. It will display the current file name

and the total record count of the file.

2

Use the

key and the

key to select the desired file.

3

Press the

key to enter the selected file. It will display the current record number (for

example, L012) and the record content.

4

Use the

key and the

key to select the desired record.

5

Press the

key on the desired record. It will automatically delete this record, and display

“-DEL”.

6

Press the

key to exit the data logging functions and return to measurement mode.

4.9 Data Printing

At the end of the inspection process, or end of the day, the user may require the readings be

transferred to a computer. The following steps outline this procedure. This function is only available for
MT160, and not for MT150.
1. Before printing, please insert one connection plug of the print cable (Optional parts) into the

socket on the up-left of the main body, and insert the other plug into the communication socket of
the mini-printer.

2. Press the

key to activate the data logging functions.

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Summary of Contents for MT150

Page 1: ...Ultrasonic Thickness Gauge MT150 160 User s Manual MITECH CO LTD www mitech ndt com www ponpe com ...

Page 2: ...urfaces 8 4 Operation 8 4 1 Power On Off 8 4 2 Probe Zero 8 4 3 Sound Velocity Calibration 9 4 4 Making Measurements 10 4 5 Scan mode 11 4 6 Changing Resolution 11 4 7 Changing Units 11 4 8 Memory Management 12 4 9 Data Printing 12 4 10 Beep Mode 13 4 11 EL Backlight 13 4 12 Battery Information 13 4 13 Auto Power Off 13 4 14 System Reset 13 4 15 Connecting to a Computer 13 5 Servicing 13 6 Transpo...

Page 3: ... 300 mm in Steel Sound Velocity Range 1000 9999 m s Resolution MT150 0 1mm MT160 0 1mm 0 01mm Accuracy 0 5 Thickness 0 04 mm depends on materials and conditions Units Metric Imperial unit selectable Four measurements readings per second for single point measurement and ten per second for Scan Mode Memory for up to 20 files up to 99 values for each file of stored values Power Source Two AA size 1 5...

Page 4: ...al ultrasonic thickness gauge determines the thickness of a part or structure by accurately measuring the time required for a short ultrasonic pulse generated by a transducer to travel through the thickness of the material reflect from the back or inside surface and be returned to the transducer The measured two way transit time is divided by two to account for the down and back travel path and th...

Page 5: ...een 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 Unit Current unit system MM or IN for thickness value M S or IN μS for sound velocity Battery Information Display the rest...

Page 6: ... being measured than a small emitting area Thus a so called 1 2 inch transducer will emit a stronger signal than a 1 4 inch transducer Absorption and Scattering As ultrasound travels through any material it is partly absorbed If the material through which the sound travels has any grain structure the sound waves will experience scattering Both of these effects reduce the strength of the waves and ...

Page 7: ...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 When the transducer is placed against the material being measured it is the area directly beneath the cente...

Page 8: ...orn on one side more than another the sound beam penetrating the test material may no longer be 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 The gaug...

Page 9: ...r to calibration will result in a multi material velocity calculation that may be different from the actual material velocity intended to be measured 4 3 1 Calibration to a known thickness Note This procedure requires a sample piece of the specific material to be measured the exact thickness of which is known e g from having been measured by some other means 1 Perform a Probe Zero 2 Apply couplant...

Page 10: ... changes from the value shown while the transducer was coupled repeat step 3 5 Press the key The MM or IN symbol should begin flashing 6 Use the key and the key to adjust the displayed thickness up or down until it matches the thickness of the sample piece 7 Press the key The display will flash 1OF2 Repeat steps 3 through 6 on the second calibration point 8 Press the key so that The M S or IN μS s...

Page 11: ... solely with the user of the instrument 4 5 Scan mode While the gauge excels at making single point measurements it is sometimes desirable to examine a larger region searching for the thinnest point The gauge includes a feature called Scan Mode which allows it to do just that In normal operation the gauge performs and displays four measurements every second which is quite adequate for single measu...

Page 12: ...ements 3 Press the key on the desired file It will automatically clear the file and display DEL 4 Press the key at any time to exit the data logging functions and return to measurement mode 4 8 3 Viewing deleting stored record This function provides the user with the ability to view delete a record in a desired file previously saved in memory Following is the steps 1 Press the key to activate the ...

Page 13: ...hould be replaced Please take out the batteries when not working during a long period of time 4 13 Auto Power Off The instrument features an auto power off function designed to conserve battery life If the tool is idle for 5 minutes it will turn itself off While the voltage of the battery is too low this function will also work 4 14 System Reset Press down the key while powering on the instrument ...

Page 14: ...ss 0 222 5639 Rubber vulcanized 0 091 2311 Teflon 0 056 1422 Water 0 058 1473 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 w...

Page 15: ...efore sound velocity may vary considerably from one piece to another Some laminated materials may even exhibit noticeable changes in sound velocity across a single surface The only way to reliably measure such materials is by performing a calibration procedure on a sample piece of known thickness Ideally this sample material should be a part of the same piece being measured or at least from the sa...

Page 16: ...tures 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 This may ...

Page 17: ...ing 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 Free maintenan...

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