Olympus 27MG User Manual Download Page 4

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DMTA-10043-01EN, Rev. C, July 2016

Table of Contents

................................................................................................................. 17

Keypad Functions ..................................................................................................... 18

2. 27MG Power Requirements ..................................................................... 23

2.1 Power

Indicator

.........................................................................................................

2.2 Batteries

...................................................................................................................... 24

3. Software User Interface Elements ........................................................... 27

3.1

Measurement Screen ................................................................................................ 27

3.2

Parameter Screens ..................................................................................................... 28

4. Initial Setup ................................................................................................ 31

5. Standard Calibration Measurement ....................................................... 35

5.1 Introduction

............................................................................................................... 35

5.2

Transducer Zero Compensation ............................................................................. 36

5.3

Velocity and Zero Calibration ................................................................................. 36

5.4

Material Velocity Calibration .................................................................................. 37

5.5

Zero Calibration ........................................................................................................ 39

6. Measurements ............................................................................................. 41

7. Additional 27MG Gaging Features ........................................................ 43

7.1

Adjusting the Backlight ............................................................................................ 44

7.2

Activating the Freeze Mode ..................................................................................... 45

7.3

Adjusting the Gain .................................................................................................... 45

7.4 Optimizing

Material

Gain

Sensitivity .................................................................... 45

7.5

Restoring the Default Gain ...................................................................................... 46

7.6

Configuring the Measurement Setup ..................................................................... 46

7.7

Configuring the System Setup ................................................................................ 50

7.8 Activating

High/Low

Alarms

.................................................................................. 52

7.9

Activating Diff Mode ................................................................................................ 53

7.10 Resetting the Instrument Parameters ..................................................................... 53

8. Specifications .............................................................................................. 57

9. Theory of Operation .................................................................................. 59

10. Application Notes ...................................................................................... 61

10.1 Factors Affecting Performance and Accuracy ...................................................... 61

Summary of Contents for 27MG

Page 1: ...ual This instruction manual contains essential information on how to use this Olympus product safely and effectively Before using this product thoroughly review this instruction manual Use the product...

Page 2: ...ccuracy of the information contained therein and corresponds to the version of the product manufactured prior to the date appearing on the title page There could however be some differences between th...

Page 3: ...Safety Symbols 6 Safety Signal Words 7 Note Signal Words 7 Warnings 8 Battery Precautions 9 Equipment Disposal 9 CE European Community 9 WEEE Directive 10 China RoHS 10 Korea Communications Commission...

Page 4: ...tion 36 5 4 Material Velocity Calibration 37 5 5 Zero Calibration 39 6 Measurements 41 7 Additional 27MG Gaging Features 43 7 1 Adjusting the Backlight 44 7 2 Activating the Freeze Mode 45 7 3 Adjusti...

Page 5: ...and Maintenance 69 11 2 Transducers Maintenance 69 11 3 Error Messages 70 11 4 Battery Problems 70 11 5 Setup Do Problems 70 11 6 Measurement Problems Diagnostic 70 11 7 Self Diagnostics 71 11 8 Gage...

Page 6: ...DMTA 10043 01EN Rev C July 2016 Table of Contents vi...

Page 7: ...List of Abbreviations DIAG diagnostic DIFF differential EFUP environment friendly use period IP Ingress Protection LOS loss of signal Max maximum Min minimum NiMH nickel metal hydride PDF portable doc...

Page 8: ...DMTA 10043 01EN Rev C July 2016 List of Abbreviations viii...

Page 9: ...e locations shown in Figure i 1 on page 1 The symbols are described in Table 1 on page 2 and Table 2 on page 3 If any or all of the labels or symbols are missing or illegible please contact Olympus Fi...

Page 10: ...ion of Conformity for details Contact your Olympus representative for more information The regulatory compliance mark RCM label indicates that the product complies with all applicable standards and ha...

Page 11: ...will not leak or chemically deteriorate while in the product The EFUP for the 27MG has been determined to be 15 years Note The Environment Friendly Use Period EFUP is not meant to be interpreted as t...

Page 12: ...DMTA 10043 01EN Rev C July 2016 Labels and Symbols 4 Figure i 2 Risk of electrical shock on T R connectors inner conductors T R1 and T R2 connectors inner conductors...

Page 13: ...her than its intended use It must never be used to inspect or examine human or animal body parts Instruction Manual This instruction manual contains essential information on how to use this Olympus pr...

Page 14: ...jury and or equipment damage do not disassemble modify or attempt to repair the instrument Safety Symbols The following safety symbols might appear on the instrument and in the instruction manual Gene...

Page 15: ...formed or adhered to could result in death or serious personal injury Do not proceed beyond a WARNING signal word until the indicated conditions are fully understood and met The CAUTION signal word in...

Page 16: ...e Follow the installation and operation procedures It is imperative to respect the safety warnings on the instrument and in this instruction manual If the equipment is used in a manner not specified b...

Page 17: ...g so could expose the cell contents which are corrosive and explosive Do not short circuit the battery terminals A short circuit could cause injury and severe damage to a battery making it unusable Do...

Page 18: ...symbol indicates that the product must not be disposed of as unsorted municipal waste but should be collected separately Refer to your local Olympus distributor for return and or collection systems av...

Page 19: ...e 27MG has been tested and found to comply with the limits for an industrial device in accordance with the specifications of the EMC directive FCC USA Compliance This equipment has been tested and fou...

Page 20: ...at has not been subjected to excessive abuse attempted unauthorized repair or modification Inspect materials thoroughly on receipt for evidence of external or internal damage that might have occurred...

Page 21: ...rt Olympus is firmly committed to providing the highest level of customer service and product support If you experience any difficulties when using our product or if it fails to operate as described i...

Page 22: ...DMTA 10043 01EN Rev C July 2016 Important Information Please Read Before Use 14...

Page 23: ...kness measurement applications With the 27MG you only need access to one side of a part in order to obtain nondestructive measurements of the thickness of corroded pitted granular and other difficult...

Page 24: ...irement of the IP65 rating Ingress Protection rating Olympus cannot guarantee any level of Ingress Protection rating once the instrument seals have been manipulated You must use sound judgment and tak...

Page 25: ...igure 1 2 The 27MG connections The universal serial bus USB and Transmit Receive transducer connectors are located on the top of the 27MG see Figure 1 3 on page 18 The USB connector on the 27MG is onl...

Page 26: ...nctions are the same for both keypads On the international keypad the text labels on many keys are replaced by pictograms In this document keypad keys are referred to using the English label in bold a...

Page 27: ...se the MEAS key at any time to return to the measurement screen The yellow keys are related to calibration Table 3 on page 19 lists the key functions available on the 27MG keypad Table 3 Keypad functi...

Page 28: ...position to the right Velocity calibration Switches to the semiautomatic material velocity calibration mode Velocity Opens a screen allowing you to view and manually change the sound velocity Zero cal...

Page 29: ...6 Instrument Description 21 Power Turns the instrument power on or off LCD Adjust Turns on or off the backlight feature that internally illuminates the LCD screen Table 3 Keypad functions continued En...

Page 30: ...DMTA 10043 01EN Rev C July 2016 Chapter 1 22...

Page 31: ...bottom right corner of the screen The 27MG can be powered by three AA sized batteries by a computer through its USB connector or by a commercially available 5 volt USB power supply When using batteri...

Page 32: ...el operating parameters update rate set to 4 Hz The nominal alkaline battery operating times for new batteries is 150 hours under normal conditions typical 30 hours continuous with back light The batt...

Page 33: ...ed Do not disassemble heat above 50 C 122 F or incinerate the batteries To replace the batteries 1 Ensure that the 27MG is turned off 2 Disconnect any cables that are connected to the 27MG 3 Remove th...

Page 34: ...ons 9 Reinstall the optional protective rubber boot if required 10 Press the power button to turn on the 27MG instrument 11 To answer the battery type setup question displayed at the bottom of the scr...

Page 35: ...measurement screen contains the elements described in Figure 3 1 on page 27 Figure 3 1 The measurement screen The measurement screen is the main screen of the 27MG software From anywhere in the 27MG s...

Page 36: ...3 2 Parameter Screens The 27MG setup parameters are logically grouped in tabs that can be accessed using the 2nd F and down arrow SETUP front panel keys Figure 3 3 on page 29 shows the MEAS tab as an...

Page 37: ...er screen example In the remainder of this document the above procedure is summarized by the simple instruction to select a specific parameter or list and its value For example In the MEAS tab set UNI...

Page 38: ...DMTA 10043 01EN Rev C July 2016 Chapter 3 30...

Page 39: ...s ease of use Further explanation of these default conditions can be found in later sections of this manual These conditions may be changed after the operator becomes familiar with the advanced featur...

Page 40: ...to the calibration instructions To operate the 27MG Ultrasonic Thickness Gage for the first time the initial setup must be completed To perform the initial setup 1 Plug the transducer into the connec...

Page 41: ...e 4 2 on page 33 Figure 4 2 The Zero screen 5 You are now ready to make measurements The current units are indicated on the right of the display Alternate between millimeters MM and inches IN by press...

Page 42: ...DMTA 10043 01EN Rev C July 2016 Chapter 4 34...

Page 43: ...f block procedure must be done when the gage is turned on when the transducer is changed and whenever the transducer temperature changes significantly Material velocity calibration or CAL VEL Done usi...

Page 44: ...de When measurements are being made on surfaces that are significantly above or below room temperature 2nd F CAL ZERO Do ZERO should be pressed to compensate for any temperature changes in the transdu...

Page 45: ...upled to the thin calibration block should be within 0 20 mm 0 010 in of the correct thickness If the indicated thickness is two or more times the actual thickness of the thin calibration block with a...

Page 46: ...or unknown material velocity 1 Update the transducer zero compensation by wiping the transducer face clean of all couplant and pressing 2nd F CAL ZERO Do ZERO 2 Couple the transducer to the block 3 Pr...

Page 47: ...for a known material velocity 1 In measurement mode press 2nd F CAL VEL VEL The current velocity will be displayed 2 This number may then be changed to the desired value using the and arrow keys 3 Pr...

Page 48: ...epted if the LOS flag is displayed 5 Uncouple the transducer and use the and arrow keys to enter the thickness of the standard 6 Press the MEAS key to complete the calibration and return to measuremen...

Page 49: ...k or material at the spot to be measured In general the smoother the material surface the thinner the couplant may be Rough surfaces require more viscous couplant such as gel or grease Special couplan...

Page 50: ...DMTA 10043 01EN Rev C July 2016 Chapter 6 42...

Page 51: ...versatile instrument The following additional features can be accessed directly from the keypad Backlight Freeze Gain adjust Material gain sensitivity optimization Default gain restoration Other featu...

Page 52: ...auto backlight mode which only turns the backlight on when a reading is being made and then turns it off five seconds after LOS To select auto backlight 1 Press 2nd F SETUP 2 Use to select the SYSTEM...

Page 53: ...recommended for all high temperature measurements To adjust the gain from the default gain value From the measurement mode press 2nd F GAIN to toggle between GAIN HIGH to GAIN LOW and DEFAULT GAIN 7...

Page 54: ...ic material gain sensitivity optimization 1 From the measurement mode press 2nd F ENTER GAIN OPT The gage will display 0 000 2 Use the and keys to select to the approximate wall thickness It is best t...

Page 55: ...7 6 2 Changing Resolution Resolution allows the user to change the number of decimal points displayed in the thickness display The user can select between STANDARD 0 01 mm 0 001 in and LOW 0 1 mm 0 01...

Page 56: ...replaces it or until the MEAS key is pressed to reset the maximum When MAX is selected the 27MG automatically changes to a 20 Hz fast update mode To configure the Min Max mode 1 Press 2nd F SETUP to d...

Page 57: ...eter 1 Press 2nd F SETUP to display the setup tabs 2 Use the keys to highlight the MEAS tab 3 Use the key to highlight MEASURE RATE and the keys to select between NORMAL 4 Hz and FAST 20 Hz 4 Press ME...

Page 58: ...udio beep when any key is pressed or when an alarm condition has been detected To configure the beeper 1 Press 2nd F SETUP to display the setup tabs 2 Use the keys to highlight the SYSTEM tab 3 Use th...

Page 59: ...period is used as radix example 0 123 in To change the Radix parameter 1 Press 2nd F SETUP to display the setup tabs 2 Use the keys to highlight the SYSTEM tab 3 Use the key to highlight RADIX and to...

Page 60: ...ctive but not above or below set points the gage displays an A L When a low alarm condition occurs the gage displays an L H When set points have been violated a high alarm condition occurs and the gag...

Page 61: ...de are mutually exclusive they cannot be used at the same time If one of these function is activated it will be automatically turned off if the other function is turned on To activate Diff mode 1 Pres...

Page 62: ...re Rate Normal CAL Lock Off Beeper On Inactive Time On Radix Period Backlight mode Normal Alarm Off Default Values Low 0 000 High 25 000 Diff Off Default Value 0 000 To reset measurement parameters 1...

Page 63: ...it will reset all the default setup parameters To preset the instrument parameters 1 Press 2nd F SETUP to display the setup tabs 2 Use the keys to highlight the RESET tab 3 Use the key to highlight MA...

Page 64: ...DMTA 10043 01EN Rev C July 2016 Chapter 7 56...

Page 65: ...g on material transducer surface conditions temperature Material velocity range 0 508 mm s to 18 699 mm s 0 020 in s to 0 7362 in s Resolution selectable Low 0 1 mm 0 01 in Standard 0 01 mm 0 001 in T...

Page 66: ...STD 810F 511 4 Procedure I Standards Designed for EN15317 Alarm mode Programmable Hi Low set points with audible and visual indicators Display Display Hold Blank mode Holds or blanks the display afte...

Page 67: ...ucer are coupled into the test piece travel through it and are reflected back from the opposite side The reflected sound waves or echoes are coupled into the receive side of the transducer where they...

Page 68: ...the transducer Calibration values and gage setups are saved in non volatile RAM random access memory The keyboard informs the microprocessor of user entered changes of mode values and so on Figure 9 1...

Page 69: ...cases it will be necessary to file or grind the surface sufficiently flat to permit contact with the face of the transducer In applications where deep pitting occurs on the outside of a pipe or tank...

Page 70: ...as the accuracy and care with which the gage has been calibrated It is essential that the velocity and zero calibrations be performed whenever the test material or transducer is changed Periodic chec...

Page 71: ...limited 10 2 Transducer Selection For any ultrasonic measurement system transducer plus thickness gage there is a minimum material thickness below which valid measurements will not be possible Normal...

Page 72: ...0 040 in to 20 in 20 C to 500 C 5 F to 932 F D791 5 0 Right angle 11 0 mm 0 434 in 1 mm to 500 mm 0 040 in to 20 in 20 C to 500 C 5 F to 932 F D791 RM 5 0 Right angle 11 0 mm 0 434 in 1 mm to 500 mm...

Page 73: ...5 0 Straight 7 2 mm 0 283 in 0 75 mm to 50 mm 0 030 in to 2 in 0 C to 50 C 32 F to 122 F D797 D797 SM 2 0 Right angle Straight 22 9 mm 0 900 in 3 8 mm to 635 mm 0 150 in to 25 in 20 C to 400 C 5 F to...

Page 74: ...Couplant H 2 can be used at temperatures up to 398 C 750 F although it will boil as the upper limit is reached Maximum recommended temperatures for Olympus couplants are provided in Table 7 on page 6...

Page 75: ...or crack detection and cannot be relied upon to detect material discontinuities A proper evaluation of material discontinuities requires an ultrasonic flaw detector such as the EPOCH used by a properl...

Page 76: ...DMTA 10043 01EN Rev C July 2016 Chapter 10 68...

Page 77: ...s Gage are rugged devices that need little care They are not indestructible however and a little attention to the following items will result in the longest transducer life The cables can be damaged b...

Page 78: ...MG Ultrasonic Thickness Gage turns off immediately after it is turned on or if it does not turn on at all then the battery is probably completely discharged The batteries should be replaced If after r...

Page 79: ...make measurements and to do step 1 If this works then the original transducer is defective Otherwise the pulser receiver assembly is probably defective 6 If the above tests indicate that there is a p...

Page 80: ...rovided in Table 9 on page 72 are displayed Table 8 DIAG1 results GAIN Internal Calibration BLK DET SMP Internal Blank Detector and Sampler Test THRESH CAL RCVR1 Threshold Calibration Test Receiver 1...

Page 81: ...age performance see Figure 11 1 on page 73 KEYPAD Tests keypad keys VIDEO Tests to assure that pixel locations are functional Figure 11 1 Tests screen 11 8 1 KEYPAD TEST The Keypad Test function tests...

Page 82: ...ss the arrow to select KEYPAD TEST and then press ENTER to start the test or press 2nd F to abort the test Visually determine that the keypad keys are functional 3 Press ENTER to go back to the TESTS...

Page 83: ...est or press 2nd F to abort the test Determine visually that video pixels are functional by observing if white spots occur in the screen test display 3 Press ENTER to go back to the TESTS screen 11 9...

Page 84: ...DMTA 10043 01EN Rev C July 2016 Chapter 11 76...

Page 85: ...n preferred crystallographic orientation porosity and temperature Therefore for maximum accuracy establish the sound velocity in a given material by first testing a sample of the material Table 10 Ult...

Page 86: ...0 097 2460 Polyethylene low density LDPE 0 082 2080 Polystyrene 0 092 2340 Polyvinylchloride PVC hard 0 094 2395 Rubber polybutadiene 0 063 1610 Silicon 0 379 9620 Silicone 0 058 1485 Steel 1020 0 232...

Page 87: ...y Sons Inc New York 1965 4 D L Folds Experimental Determination of Ultrasonic Wave Velocities in Plastics Elastomers and Syntactic Foam as a Function of Temperature Naval Research and Development Labo...

Page 88: ...DMTA 10043 01EN Rev C July 2016 Appendix 80...

Page 89: ...partment 25 Figure 2 3 Selecting the battery type 26 Figure 3 1 The measurement screen 27 Figure 3 2 Other elements of the measurement screen 28 Figure 3 3 Parameter screen example 29 Figure 4 1 Trans...

Page 90: ...DMTA 10043 01EN Rev C July 2016 List of Figures 82...

Page 91: ...on and rating label 2 Table 2 Content of the serial number label 3 Table 3 Keypad functions 19 Table 4 Default conditions 31 Table 5 Specifications 57 Table 6 Transducer selection 64 Table 7 Couplant...

Page 92: ...DMTA 10043 01EN Rev C July 2016 List of Tables 84...

Page 93: ...0 replacing 24 25 caution 25 fully charged 26 storage instructions 24 type alkaline 24 NiMH rechargeable 24 using 24 beeper audio alarm 50 Blank mode LCD display 31 boot protective rubber 16 C CAL LOC...

Page 94: ...compliance 11 EN15317 standards designed for 58 English keypad 18 ENTER key 19 environmental rating 16 equipment disposal 9 error messages 70 ESC secondary key 19 explosive atmosphere safe operation...

Page 95: ...C 19 GAIN 19 GAIN OPT 19 SETUP 20 VEL 20 known material sound velocity 39 Korea Communications Commission KCC marking 3 symbol 11 Korean standard See Korea Communications Commission KCC L labels 1 ins...

Page 96: ...ns 28 power key 17 21 power level batteries 23 power requirements instrument 23 powering on instrument See turning on instru ment precautions batteries 9 product description 15 protective rubber boot...

Page 97: ...ompensation calibration 36 transducers connectors Transmit Receive 17 diagnosing defective 70 dual element measurement mode 57 frequency range 57 high temperature measurements 65 maintenance 69 positi...

Page 98: ...DMTA 10043 01EN Rev C July 2016 Index 90...

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