PDF Manual - M&L Testing Equipment
Contents
1. Coupling Light weight sample must be firmly coupled with a heavy base plate Both coupled surface must be flat and smooth and there is no redundant coupling agent existing The impact direction must be vertical to the coupled surface When the sample is a big plate long rod or bending piece it can be deformed and become unstable even though its weight and thickness is big enough and accordingly the test value may not be accurate So the sample should be reinforced or supported at its back Magnetism of the sample itself should be avoided TEL 86 10 51284068 9 FAX 86 10 51733675 MITECH www mitech ndt com 4 Testing Program 4 1 Start Up Insert the plug of the impact device into the socket of impact device on the instrument Press the key now power is on The instrument is in working mode 4 2 Loading Pushing the loading tube downwards until contact is felt Then allow it to slowly return to the starting position or using other method locking the impact body 4 3 Localization Press the impact device supporting ring firmly on the surface of the sample the impact direction should be vertical to the testing surface 4 4 Testing Press the release button on the upside of the impact device to test The sample and the impact device as well as the operator are all required to be stable now The action direction should pass the axis of the impact device Each measure area of the sample usually need 3 to 5 tim2. TEL 86 10 51284068 12 FAX 86 10 51733675 MITECH www mitech ndt com 1 High carbon steel 6 Cr Ni Mo steel Cr Mn Si steel Cr V steel 80777 Super strength steel 4 Cr Ni steel 190007 Stainless steel 5 3 Hardness Strength testing Press key to switch between hardness testing and strength testing 6b Note Only D and DC type of impact device has the function of strength testing So hardness testing is the only selection if the impact device is not D or DC type In hardness testing Pressl key to change the hardness scale The supported hardness scale includes HL HV HB HRC HS HRB and HRA Note Here only displays the valid hardness scale for the present selected impact device and material It would not display the hardness scale which is not valid Please select material firstly then select hardness scale e Presetting hardness scale recovers to HL automatically after presetting material is changed 5 4 Impact Direction Setting Press the 2 key to move to the impact direction that you will preset 5 5 Average Times Setting You could modify average times within the range of 1 to 32 as following 1 Press key in testing state The impact times item will begin to flash 2 Press e or 2 key to set the average times to the number you want 3 Press key finally to exit from the operation 5 6 Data logging At most one hundred files FOO F99 one group as one file can be stored in
3. MITECH www mitech ndt com 6 1 Impact Device Na nat ee een 16 6 2 Instrument Maintenance Program esse sesse dd ee ee ee ee ee ee ee ee ee ee RR RE ee ee ee 16 6 3 Fault Analysis amp Evacuation ccccccccccccccccsssssssssssesseeecccccceeeeseeaaeeesssssssseeeeeeeeseeeseeeeaegeeesssseeseeeeeeees 16 6 4 Notice of Transport and Storage Conditions cccccccccccccssssssssssseeeeececeeeceeeeeaaaaseeeeeeeeeeceeeeeeeeeeeaaas 16 APPENDIX en N Ee OR wots snes ane EE EE EE 17 tos EE EE EE E EE EE NE EE ET EEN 17 TaD EE EE EE EE EE EE OE OE EE OE EE EE EE OR EE EE N VENEN 18 The ME EE NE EE eu EE NE EE EE EN 18 dio MR OR OE EE EE EE EE EE EE EE EA 19 TEL 86 10 51284068 2 FAX 86 10 51733675 MITECH www mitech ndt com 1 Overview 1 1 Advantages Wide measuring range Based on the principle of Leeb hardness testing theory It can measure the Leeb hardness of all metallic materials Large screen LCD showing all functions and parameters With EL background light Seven impact devices are available for special application Automatically identify the type of impact devices Test at any angle even upside down Direct display of hardness scales HRB HRC HV HB HS HL Large memory could store 100 groups Relative to average times 32 1 information including single measured value mean value impact direction impact times material and hardness scale etc Battery information showing the rest capacity of the battery User cal
4. 100083 Web www mitech ndt com TEL 86 10 51284068 20 FAX 86 10 51733675
5. 4 2 Loading sesse sesse ee dd ge ee so EE ee ee ee GE de 10 NOC AIA ELON so ee IG ei EE 10 MUSK N cs ct ae N N da EE EE N ON 10 4 5 Read Measured Value ses oes ee N ee ie ee Ee ee ie 11 4 6 Notification AA OE TERE OE ENEREE 11 5 Operation Detail SDA NE EE N 12 5 1 Power ON IE df NE AR asse ad ei einde ER id ei ER EE 12 3 2 Marl Selde No ee ki Gie EE Eee Ee IE RE Ge De 12 5 3 Hardness Sfensth testing ccccccccccccccscccssssssssssssssececcccccceseeeeesssssesesssseeeecceessssseeeceasssssseseeeeeees 13 5 4 Impact I CICS CI asso asetrsarnndainsrenesin sion sebestneadtenubainsdaietnanedteshonniasainenstenia O e 13 DNV ENIN SONI otters N Oe E EE OE N 13 Sr 09 Brie elias di AM EE OE OE EE EE OE N OE EE entre ter 13 5 6 1 Viewing stored file GTOUD esse ee ee ee RE EE ee ee ee ee RR EE ee ee ee ee ee ee ee ee RR RE ee ee ee 13 5 6 2 Clearing selected file Group ee ee EE ee ee AA ee ee ee ee ee RR EE ee ee ee 14 Did suid IRC PO ER EO EE ER OE Ne 14 BF ce vloer Denel ie NT eT Tire erate sere rte ER OE Re OE RR N siren te OE AR GE AG rer Tree rte 14 SE BE le dil ee ee ee eier 14 FOAN PO T O ee ee DE Aa ee ee 15 ll Battery Keplace miei eat Ee crease erat eatin dase dam topcoat ei ee Me 15 3 12 OOM CH toa CC is vd Rea N ee Re RR ae AD ee Ra RA De EE 15 1E itorE ode ool al es i ole eee eee RD eee eter E E tert nent ane et eee re ee ere 15 6 Maintenance amp Serie lie se EE ee een 16 TEL 86 10 51284068 1 FAX 86 10 51733675
6. valid range When reaching the presetting impact times the buzzer will alert a long howl After 2 seconds the buzzer will alert a short howl and display the mean measured value 4 6 Notification Replacing the impact device must be done during Power off Otherwise the main body could not identify the type of the impact device and it may damage the circuit board of the main body You could not save the current test value if the impact time is less than the presetting times value Only type D and type DC of impact device have the function of strength test option You can not change the setting to strength testing when using other types of impact device The setting would be set to hardness testing automatically after replacing the impact device whether the setting is hardness testing or not before Not all materials could convert to all hardness scale value The hardness scale is reset to HL automatically after changing the material So select material firstly before changing the hardness scale TEL 86 10 51284068 11 FAX 86 10 51733675 MITECH www mitech ndt com 5 Operation Detail 5 1 Power On Off Press to power on the instrument Be sure to plug in the impact device before powering on The system would automatically detect the type of the impact device during power up and would display this information on the screen Users should pay attention to the probe type displayed on the screen After pausing for several secon
7. HE EEE S 387 364 PAV N EE ee ee RE ETER u Cast aluminium 538 007 53 Q BRASS copper Sata u 95 3 BRONZE copp ee n alloys K r EC Ba II alloys TEL 86 10 51284068 17 FAX 86 10 51733675 MITECH www mitech ndt com Table 2 8 CrMosteel or 721875 8 Cmmmsiste 500 750 7 rss 91 Superstrengtnsteei 630 800 1180 2652 Table 3 Type of impact device DC D DL Impacting energy 11mJ 11mJ sr rnd Mass of impact body 5 99 7 2g 7 89 3 0g 20 09 5 59 Test tip hardness 1600HV 1600HV 1600HV 1600HV 5000HV Dia Test tip 3mm 3mm 3mm omm 3mm Material of test tip Tungsten Tungsten Tungsten Tungsten synthetic carbide carbide carbide carbide diamond Impact device diameter Impact device length Impact device weight 50g sample Mean roughness value 1 6 u m 1 6 u m 0 4 u m 6 3 u m 1 6u m K a a PT ET Min weight of sample Measure directly gt 1 5kg Need support firmly 0 5 1 5kg Need coupling tightly 0 05 2kg 0 02 0 5kg Min thickness of sample Coupling tightly omm omm Imm 10mm omm Min layer thickness for 18 TEL 86 10 51284068 FAX 86 10 51733675 MITECH www mitech ndt com Size of tip indentation Hardness Indentation 300HV diameter Depth of 24um indentation Hardness Indentation 0 54mm GOOHV diameter Depth of 17 u m 17 u m indentation KIRRI Hardness Indentation 0 35mm BOOHV diameter Depth of 10u m 10 u m indentati
8. of the impact body respectively when the spherically test tip is located 1mm above the testing surface The calculation formula is as follows HL 1000xVB VA Where HL Leeb hardness value VB Rebounding velocity of the impact body VA Impacting velocity of the impact body 3 Preparation 3 1 Instrument Preparation and Inspection Verification of the instrument is by using standard test block The error and repeatability of displayed value should be within the regulation of Appendix table 2 The instrument and impact device must be calibrated using a standard hardness block before use as the first time or having not been used for a long time or having reset the instrument system Press key meanwhile pressing down the key to power on the system Then the user calibration screen shows as left below Test for 5 points on the standard hardness block It would display the average measured value after measuring 5 times Press eJl key to change to its nominal value Pressl Jkey to confirm the calibration finally Or press the key to cancel the calibration Range of adjustment 30HL The measurement parameters including the material setting the hardness scale and the impact direction can t be changed during calibration Note Use a calibrated hardness tester test the standard test block downward vertically for 5 times the arithmetical average value compare with the value o
9. MH180 Leeb Hardness Tester User s Manual A Mitech Inc Ltd MITECH www mitech ndt com ide nenne naar 3 Ti MeV id us Wo ne Ee Oe ER 3 1 2 Main Application amp Testing Range iese ee ee ee ee ee ee AR RE Ee ee ee ee ee ee ee ee 3 MAR ADD One Re ea en re 3 122 Test RA os Re GR ER EE Re E ie Ge Ge Eee 3 1 3 Technical Specifications ass dee el eo oe nein A EE OGE ie EE EI Ge ee E EE EE OE EE A L3 WOrkine OG EN Sense ee Ek Ee EN Ie go Ee da aah ed Ee Couisaonei 5 2 Structure Feature amp Testing Principle ese ees sees Re ee ER Re ee ee EER ee 5 ZA OU nd eed A Ee EO OE OR OE OR od 5 2 1 1 D Type Impact Device ss ss ss ed ee af wee ee N re 6 2 1 2 Different Types of Impact Device eise ee gf ee N esse N se 6 2 2 Main Screen hier EE OE EO OE AE OE N RE ER N ER RE 6 2 3 Keypad Definition esse de ee oe GE ee ese see a 2 4 Leeb Hardness Testing Principles ese na ag GEN EE GE SEWE 8 3 PreParatiONn cccccccccccscsssssssssssssssssssssssssssssssssssscssssssscessse ED ee ee ee ee ee ee ee ee ee 8 3 1 Instrument Preparation and Inspection esse esse ee ee ee ee RR RR RE ee ee ee 8 3 2 Impact Device Selection ees ss ss ee es df a be N EG GE 9 3 3 Preparation of the Sample Surface esse esse EE ee ee ee EE ee ee ee ee ee ee ee ee RR RR EE Ee ee ee 9 4 Testing Program sesse sees sesse eed oe ER oe GE Re ee ee dee ee 10 EE oi HA EE EE EE N EA MUE OE EE EE OE EEN 10
10. RA HV HS Display segment LCD Data memory max 100 groups relative to impact times 32 1 Working power 3V 2 AA size alkaline batteries Continuous working period about 100 hours With backlight off Communication interface RS232 1 4 Configuration Table 1 2 No fitem Quantity Remarks ___ Standard 1 Mainunit M N Configuration 3 Standardtestblock 1 4 Cleaningbrush l 14 5 Smallsupportring 1 t Alkaline Alkaline batey 2 mse 7 Manual o o Instrument package ad case TEL 86 10 51284068 FAX 86 10 51733675 MITECH www mitech ndt com I Optional 11 Cleaning brush Il Configuration use with SEE type Impact device Other type of impact a Refer to Table 3 EN EN 1 and Table 4 in the ER Tann and support rings 14 Communication cable _ Zn 5 MeroPiner Ibm 16 Printcable J4 1 5 Working Conditions Working temperature OC 40C Storage temperature 30 C 60 C Relative humidity S90 The surrounding environment should avoid of vibration strong magnetic field corrosive medium and heavy dust 2 Structure Feature amp Testing Principle 2 1 Structure Feature 4 POWER 2 eee 2 9 T 1 Main unit 2 Keypad 3 LCD display 4 Socket of RS232 5 Socket of impact device 6 Impact device 7 Label 8 Battery cover TEL 86 10 51284068 5 FAX 86 10 51733675 MI
11. TECH www mitech ndt com 2 1 1 D Type Impact Device 1 2 3 4 5 6 7 1 Release button 2 Loading tube 3 Guide tube 4 Coil unit 5 Connection cable 6 Impact body 7 Support ring 2 1 2 Different Types of Impact Device DC DL C D 15 E G 2 2 Main Screen Below is the main display screen Lo Battery Info l Measured Value Impact Times x Ta I i IM i ui H EF i l yy UN V NOV OD N N de O o p Jg amp F E 3 I Ee JI Z MITECH www mitech ndt com n Instruction of the Main Display Screen Material The present presetting material Impact direction The present impact direction Hardness scale Hardness scale of the present measured value Battery information Showing the rest capacity of the battery Measured value Display present single time measured value without showing average icon or display the present mean value with average icon prompting HI means over conversion value or measure range LO means lower than conversion value or measure range Impact times Times that have been impacted Average Icon It will appear when showing the mean value of the measured values after reaching the presetting impact times Memory Icon It appears when operating the instrument memory 2 3 Keypad Def
12. d the screen will exit and enter the main display screen as following The instrument can be turned off by pressing the key while it is working The tool has a special memory that retains all of its settings even when the power is off 5 2 Material Setting Press key to change the material to the one you want to preset Hardness scale recovers to HL automatically after material presetting changed Please select material firstly then select hardness scale In hardness testing you can select the material among the following materials Steel and Cast Steel Cold Work Tool Steel Stainless Steel Gray Cast Iron Nodular Cast Iron Cast Aluminium Alloys Copper Zinc Alloys Copper Aluminium Alloys Wrought Copper and Wrought Steel The relationship between the material number displayed on the instrument screen and the material is as follows Table 5 1 O Steel and cast steel 5 Cast aluminium alloys 1 Cold work tool steel 6 CopperZincalloyg 3 Graycastion 8 Wroughtcopper 4 Nodular castiron 9 Wrought steel __ _ In strength testing the following materials are selectable Mild Steel High Carbon Steel Cr Steel Cr V Steel Cr Ni Steel Cr Mo Steel Cr Ni Mo Steel Cr Mn Si Steel Super Strength Steel and Stainless Steel The relationship between the material number displayed on the instrument screen and the material is as follows Table 5 2 0 Mildsteel S Cr Mosteel
13. e impact device 6 2 Instrument Maintenance Program When using standard Rockwell hardness block to testing if all the error is bigger than 2 HRC it may be the invalidation of impacted ball top caused by abrasion Changing the spherical test tip or impact object should be considered 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 6 3 Fault Analysis amp Evacuation Fault Appearance Fault Analysis Handling method Battery exhaustion Replace the batteries pact device cable failure Replace the cable 6 4 Notice of Transport and Storage Conditions Keep it away from vibration strong magnetic field corrosive medium dumpiness and dust Storage in ordinary temperature e With original packing transport is allowed on the third grade highway TEL 86 10 51284068 16 FAX 86 10 51733675 MITECH www mitech ndt com APPENDIX Table 1 ves _ eT a Material Method an D DC D 15 19 3 lt ET RA AT 1 37 0 re et er Steel and cast HRA 59 1 61 7 88 0 steel 85 8 rd 80 638 80 683 90 646 83 663 81 646 83 976 80 937 80 996 84 1042 80 950 ae 32 2 33 3 31 8 35 8 30 6 99 5 99 3 102 1 102 6 96 8 20 4 19 8 20 7 46 5 Stainless steel ann 101 7 HB EES EE N BEN AE FR een oo EE EN EE d SERE HV NE EE EE N ee mR
14. es of testing operation The result data dispersion should not more than mean value 15HL The distance between any two impact points or from the center of any impact point to the edge of testing sample should conform to the regulation of Table 4 1 f want accurate conversion from the Leeb hardness value to other hardness value contrastive test is needed to get conversion relations for the special material Use inspection qualified Leeb hardness tester and corresponding hardness tester to test at the same sample respectively For each hardness value each measure homogeneously 5 points of Leeb hardness value in the surrounding of more than three indentations which need conversion hardness using Leeb hardness arithmetic average value and corresponding hardness average value as correlative value respectively make individual hardness contrastive curve Contrastive curve at least should include three group of correlative data Table 4 1 TEL 86 10 51284068 10 FAX 86 10 51733675 MITECH www mitech ndt com Type of Impact Distance of center of the Distance of center of the Device two indentations indentation to sample edge Not less than mm Not less than OD or m NE EE EE SE NE EE EE eN NE EE EE ee EE aN ME T NY 4 5 Read Measured Value After each impact operation the LCD will display the current measured value impact times plus one the buzzer would alert a long howl if the measured value is not within the
15. f standard test block If this value exceeds the standard value could use the function of user calibration to adjust TEL 86 10 51284068 8 FAX 86 10 51733675 MITECH www mitech ndt com 3 2 Impact Device Selection Refer to Appendix Table 1 and Table 3 for selection of impact device 3 3 Preparation of the Sample Surface Preparation for sample surface should conform to the relative requirement in Appendix Table 3 In the preparation processing for sample surface the hardness effect of being heated or cold processing on the surface of sample should be avoided Too big roughness of the being measured surface could cause error So the surface of the sample to be measured must appear metallic luster smoothing and polish without oil stain Support of test sample Support is no necessary for heavy sample Medium weight parts must be set on the smoothing and stable plane The sample must set absolutely equability and without any wobble Curved surface The best testing surface of sample is flat When the curvature radius R of the surface to be tested is smaller than 30mm D DC D 15 C E and DL type of impact device and smaller than 50mm G type of impact device the small support ring or the shaped support rings should be chosen The sample should have enough thickness minimum thickness of sample should conform to Table 3 For the sample with hardened layer on surface the depth of hardened layer should conform to Table 3
16. f there is no data in the memory it will display lt E04 gt which means no memory data and then return back 2 Use the e key and the e key to scroll to the file that will be deleted 3 Press the key on the desired file It will automatically delete the file and display DEL 4 Press the key at any time to exit the data logging function and return to measurement mode Note Do not shut down the instrument while deleting data It could lead to unpredicted consequence if shutting down while deleting 5 7 Print Report At the end of the inspection process or end of the day the user may require the readings be printed This function is only available with the mini printer 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 You can print out the measurement result immediately after each testing process by easily pressing the key If you want to print the data stored in the instrumentmemory then following is the steps 1 Press the key to activate the data logging function The memory icon will appear 2 Use the 2 Key and the Lo Key to select the desired file 3 Press the key to print the selected file This operation will send all the data in current file to the mini printer via RS232 port and print them out 4 Press the key to exit the data logging func
17. h When this occurs the batteries should be replaced by a new pair Pay attention to the polarity of the batteries Please take out the batteries when not working during a long period of time 5 12 Connecting to a Computer The Instrument is equipped with a RS232 serial port Using the accessory cable The cable and following referred software are optional parts the gauge has the ability to connect to a computer or external storage device Measurement data stored in the memory of the gauge can be transferred to the computer through the RS232 port Detailed information of the communication software and its usage refer to the software manual 5 13 Error Code Reference Explanation Explanation Battery exhausted Can not print Value out of range Data already saved No memory data EN N E02 Measurement ot E07 finished OO TEL 86 10 51284068 15 FAX 86 10 51733675 MITECH www mitech ndt com 6 Maintenance amp Servicing 6 1 Impact Device Maintenance After the impact device has been used for 1000 2000 times please use the nylon brush provided to clean the guide tube and impact body When cleaning the guide tube unscrew the support ring first then take out the impact body spiral the nylon brush in counter clock direction into the bottom of guide tube and take it out for 5 times and then install the impact body and support ring again Release the impact body after use Any lubricant is absolutely prohibited inside th
18. ibration function Software to connect to PC via RS232 port Micro printer support Compact plastic case suitable for use under poor working conditions Continuous working period of no less than 100 hours with two alkaline batteries AA size Auto power off to save energy Outline dimensions 150x74x32 mm Weight 245g 1 2 Main Application amp Testing Range 1 2 1 Main Application Die cavity of molds Bearings and other parts Failure analysis of pressure vessel steam generator and other equipment Heavy work piece The installed machinery and permanently assembled parts Testing surface of a small hollow space Material identification in the warehouse of metallic materials Rapid testing in large range and multi measuring areas for large scale work piece 1 2 2 Testing Range Testing range refer to Table 1 and Table 2 in the Appendix TEL 86 10 51284068 3 FAX 86 10 51733675 MITECH www mitech ndt com 1 3 Technical Specifications Error and repeatability of displayed value see Table1 1 below Table 1 1 Type of Hardness value ofLeeb Error of displayed Reneatabilit impact device standard hardness block value p y 760 30HLD 6 HLD 6 HLD 530 40HLD 10 HLD 10 HLD 5 DC 760 30HLDC 6 HLDC 6 HLD 530 40HLDC 10 HLDC 10 HLD 878 30HLDL 7 7662 30HLD 15 590 40HLG u 125 30HLE 822 30HLC u Measuring range HLD 170 960 HLD Measuring direction 0 360 Hardness Scale HL HB HRB HRC H
19. initions Table 2 1 a the EL ia ave or Data Delete instrument on off er Selection ss switch Tr e dar ENE N NNS ANN EN oS Press key to store present group of measured value into memory This operation is only valid after displaying the mean value Press keyl and could display single measured value Press key could switch on of off the background light of LCD Press key to set the impact direction Press key to change the impact times in one group The impact times item will flash when first pressing the key and then the impact times value will plus or minus when pressing the e or 2 key Press key finally to exit from changing the impact times process Press key to change the hardness scale Press Key to change the material Presetting hardness scale recovers to HL automatically after material presetting changed TEL 86 10 51284068 7 FAX 86 10 51733675 MITECH www mitech ndt com Press Key to switch between hardness test and strength test Only D and DC type of impact device has the function of strength testing So hardness testing is the only selection if the impact device is not D or DC type Press key to print out the measured values after measurement 2 4 Leeb Hardness Testing Principle The basic principle is to use an impact body of certain weight impacts against the testing surface under certain test force then measure the impacting velocity and the rebounding velocity
20. on DC Test hole Available type of impact or hollow device cylindrical DL Testslender narrow groove or hole Table 4 Sketch of non conventional Supporting ring Z10 15 Z14 5 30 Z25 50 HZ11 13 HZ12 5 17 HZ16 5 30 K10 15 TEL 86 10 51284068 FAX 86 10 51733675 0 54mm reentran t surface 0 38mm 0 54mm 12um 24um 0 32mm 0 90mm 0 54mm 8um A1 n m 17 um 0 35mm 0 35mm um 10um C Test G Test E Test super small light thi large high thick heavy hardness and rough material surface steel n parts and surface of hardened layer For testing cylindrical outside surface R10 R15 For testing cylindrical outside surface R14 5 R30 For testing cylindrical outside surface R25 R50 For testing cylindrical inside surface R11 R13 For testing cylindrical inside surface R12 5 R1 For testing cylindrical inside surface R16 5 R30 For testing spherical outside surface SR10 SR15 MITECH www mitech ndt com For testing spherical outside A surface SR14 5 SR30 HK11 13 FR For testing spherical inside VAR surface SR11 SR13 10 HK12 5 17 FL For testing spherical inside surface SR12 5 SR17 11 HK16 5 30 For testing spherical inside surface SR16 5 SR30 py For testing cylindrical outside UN Aff surface radius adjustable QTY R10 Mitech Inc Ltd Address Room 1405 Yi Hai Plaza 16 of Tsinghua East Road Haidian District Beijing China Tel 86 10 51733679 Fax 86 10 51733675 Pc
21. side the gauge By simply pressing the key after a new measurement finishes the screen showing the AVE icon the measured hardness strength group values will be saved to memory The new saved file is appended as the last file of the memory This function provides the user with the ability to view delete a file group previously saved in memory 5 6 1 Viewing stored file Group To view the memory data follow the steps 1 Press the key to activate the data logging function The memory icon will appear It will display the current file name the test parameter of the group data and the mean value of the group If there is no data in the memory it will display lt E04 gt which means no memory data and then return back 2 Use the e key and the Lo Key to select the desired file to view TEL 86 10 51284068 13 FAX 86 10 51733675 MITECH www mitech ndt com 3 Press the key to see details of that group data 4 Use the e key and the Lo Key to view each single measured data in that group while viewing details 5 Press the Key to return to previous screen at any time during data logging 5 6 2 Deleting selected file Group The user may reduire deleting a file from the instrument memory The procedure is outlined in the following steps 1 Press the Key to activate the data logging function The memory icon will appear lt will display the current file name the test parameter of the group data and the mean value of the group I
22. tions and return to measurement mode 5 8 System Reset Press down the key while powering on the instrument will restore factory defaults The only time this might possibly helpful is if the parameter in the gauge was somehow corrupted 5 9 EL Backlight With the EL background light it is convenient to work in the dark condition Press key to switch on or switch off the background light at any moment as you need after power on TEL 86 10 51284068 14 FAX 86 10 51733675 OMITECH www mitech ndt com Since the EL light will consume much power turn on it only when necessary 5 10 Auto Power Off The instrument features an auto power off function designed to conserve battery life If the tool is idle neither measuring nor any key operation for 5 minutes it will turn itself off Before powering off the LCD display of the instrument will continue flashing for 20 seconds Except key press any key could stop the twinkle of LCD screen and stop the operation of power off at the moment While the voltage of the battery is too low the display will show lt E00 gt then power off automatically 5 11 Battery Replacement Two AA size alkaline batteries are needed as the power source After several hours usage of the batteries the battery symbol on the screen will be shown as 4__ The more of dark part indicates the more close to fill When the battery capacity runs out the battery symbol will be shown as q and will begin to flas
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