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PORTABLE HARDNESS TESTER
DHT- 200
Plus
INSTRUCTION MANUAL
V1.0.0
Страница 1: ...PORTABLE HARDNESS TESTER DHT 200Plus INSTRUCTION MANUAL V1 0 0 ...
Страница 2: ...on the work piece surface 4 4 Selection and performance of impact device 4 4 1 Selection of impact device 4 4 2 performance of impact devices 4 5 Functions of DHT 200PLUS 5 5 1 Technical specifications 5 5 2 Nomenclature of DHT 200PLUS 5 5 2 1 Main unit 5 5 2 2 Display area 6 5 2 3 Keypad 7 6 Operation instruction 8 6 1 Power on 8 6 2 Parameters setting 8 6 3 Measure 8 6 3 1 Impact direction setti...
Страница 3: ...on of printing paper 17 6 6 2 Printing of one time measurement data 17 6 6 3 Data output through printer 17 6 7 Data output through USB to PC 17 6 8 Deleting of wrong measuring data 18 7 Repairing and Maintenance 18 7 1 Maintenance of battery 18 7 2 Maintenance of impact body tip 18 7 3 Maintenance of impact device cable 18 7 4 Maintenance of printer ribbon 18 7 5 Maintenance of instrument 18 8 Pa...
Страница 4: ... g steel aluminum etc Leeb hardness value represents a direct relationship to its hardness properties For ordinary metal conversion curves of hardness HL versus other standard static hardness HB HV HRC etc are available enabling you to convert HL into other hardness values 2 2 Definition of Leeb hardness An impact body with a spherical test tip made of tungsten carbide is propelled against the sam...
Страница 5: ...nt out of all test results via inner mini printer Auto converse to hardness value HL HRC HRB HB HV HSD Low Battery Indicator 2 4 Symbol of Leeb s hardness values Just like the other hardness scales users will get different hardness values with different impact devices for example 720HLD 720HLC Owing to different converting curves obtained from different hardness scale when converting from hardness...
Страница 6: ...for work piece weight more than 5kg Work piece with weight of 2 5kg and also heavier work piece with protruding parts or thin walls should be placed on a solid support In such a manner they do not move or flex during testing Work piece less than 2 kg should be rigidly coupled with a non yielding support such as a heavy base plate Table 3 2 1 Work piece weight and thickness Impact Device Weight KG ...
Страница 7: ...tion of impact device Before testing users should correctly select the proper impact devices according to testing requirement work piece size and shape For details please refer to appendix 1 4 2 performance of impact devices a Loading Press down the loading tube to lock the impact body b Placement Place the support ring on surface to be measured and make sure the distance between two test points s...
Страница 8: ...ity 0 5 Memory 100 customized files X 100 data each file Power 4 AA rechargeable batteries continuous work 8 hours Auto turn off 1Min 2Min 5Min and off shutdown Working Temp 20 40 Storing Temp 30 60 Dimension 215 145 46mm Weight 600g with battery 5 2 Nomenclature of DHT 200PLUS 5 2 1 Main unit 1 1 4 7 8 5 Reset 6 Keypad 7 Impact device connecting port 8 USB port charging port 1 Shell 2 Integrated ...
Страница 9: ... device type 11 Max value of testing result 12 Min value of testing result 13 Avg value of testing result 14 Measuring relative error 15 Leeb hardness values 16 Instrument state 17 Operation indication 18 Tested material 19 Limits mark 20 Converted values 21 Converted hardness scales 22 Testing times 1 Impact direction 2 Auto save 3 Date and time 4 Current file 5 Non Work piece mark 6 Sound indica...
Страница 10: ...ss one time to turn on the printer press twice to print current data 1 Down Key 2 Turn off the printer 1 Adjust the menu items 2 In measuring status press one time to turn off the printer 1 Menu confirm key 1 Enter into the menu and confirm the settings 1 Menu Esc 2 Delete key 1 Exit menu 2 In measuring status delete error values 1 Preview key 1 Preview the saved files 1 Display key 1 Exchange dis...
Страница 11: ...arious parameter settings and management can be accomplished via the instrument menu Press the key to Enter the menu and press the key or key to select the setting items Press the key to confirm setting 6 3 Measure Measure is available for users to set basic parameters needed in measurement It can also be changed during the measurement operation 6 3 1 Impact direction settings DHT 200 PLUS can be ...
Страница 12: ...al set must conform to the actual measured material DHT 200PLUS hardness tester supplies 9 kinds of materials for actual measurement For each material there is accordingly different hardness scales For details please refer to appendix 2 and 3 Before measurement users should firstly confirm the measured materials and the corresponding hardness scales Set the proper materials and hardness scales as ...
Страница 13: ...pplies users 100 files which are coded from F001 to F100 Per each file there is also 100 data storage which is coded from 001 to 100 For example it shows F001 099 on LCD display it means the 99th test data in File No 001 For the convenience of saving the data for different work pieces the function of work piece marking is available in the current file Then users will be able to identify the data o...
Страница 14: ... values will be stored in the file automatically Under this condition the work piece mark can be set to identify them in the same file maximum 5 different work piece data can be saved in one file Press the key and the key to enter FILES SETUP STORAGE Press the key to enter this item Press the key or key for setting Press the key to confirm 6 4 3 Print file settings Via this function the saved data...
Страница 15: ... out after the measurement 6 4 4 Delete file settings Via this function the saved files and data can be deleted Both single file delete and all files delete are available Delete a file This will delete all the information saved in one file Press the key and the key to enter FILES DELETE FILE Press the key to enter this item Press the key or key for setting Press the key to confirm Delete all files...
Страница 16: ...etting users are allowed to set date and time which will be saved together with other data when transfer to PC or printed out Press the key and the key to enter OPTION DATE AND TIME Press the key to enter this item Press the key or key for setting Press the key to confirm 6 5 2 Tolerance settings During measurements this function will be very useful for identifying checked out It is automatically ...
Страница 17: ...close to work piece Hardness tester DHT 200PLUS supplies users with this function to correct the error mentioned above Press the key and the key to enter OPTION CALIBRATION Press the key to enter this item Press the key or key for setting Press the key to confirm Prompt In actual measurement adjust the range of within 30HLD is recommended If the error is more than that it is suggested to change th...
Страница 18: ...h consumes more power of batteries even out of usage 6 5 5 LCD brightness settings DHT 200 plus supplies the function of brightness settings of LCD Users can adjust the brightness freely according to the operation circumstance Press the key and the key to enter OPTION LCD BRIGHTNESS Press the key to enter this item Press the key or key for setting Press the key to confirm 6 5 6 Key sound settings ...
Страница 19: ...clients for convenience in usage Press the key and the key to enter OPTION LANGUAGE Press the key to enter this item Press the key or key for setting Press the key to confirm 6 5 8 Restore default It is used to renew the factory settings when some terrible parameter settings error appears Press the key and the key to enter OPTION RESTORE DFLT Press the key to enter this item Press the key or key f...
Страница 20: ...nt 6 6 2 Printing of one time measurement data 1 When the printer is connected press to print the current measuring values 2 When the printing is finished the printer will be shut down automatically 6 6 3 Data output through printer If print a single file please refer to 6 4 3 Prompt It is suggested not to use the printer when the battery power is low because the printer consumes much power 6 7 Da...
Страница 21: ...n the range of tolerance 6HLD on testing the block comes with the delivery but out of range of repeatability the maximum value minus the minimum value less than 12HLD please replace the impact body and do calibration again If it does not show within the range of tolerance but repeatability is good please make change through the Menu CALIBRATION For details please refer to 6 5 3 calibration 7 3 Mai...
Страница 22: ...when it is out of the warranty term we will supply the services with collection of charges 4 Please do not dismantle the instrument sheath by yourself in case receiving permission from manufacture otherwise any problems arises from that will not be within our service 8 Packing list The standard delivery includes Code Content Quantity 1 Main unit DHT 200 PLUS 1 set 2 Impact device standard D includ...
Страница 23: ...87 Cast Aluminum 174 560 20 159 Brass 200 550 13 5 95 3 40 173 Bronze 300 700 60 290 Copper 200 690 45 315 Table 2 Impact Device C Measuring Range LC 350 950 Material HLC HRC HRB HB HV HS Steel Cast St 350 950 20 0 69 5 80 683 80 996 31 9 99 6 Table 3 Impact Device G Measuring Range LG 300 750 Material HLG HRC HRB HB HV HS Steel Cast St 300 750 47 7 99 9 90 646 Gray Cast Iron 300 750 92 326 Nodula...
Страница 24: ... parts D 15 Long size Used for measuring in grooves or concaved surface DL Equipped with extension rod 50mm Used for hardness testing on the deep section of parts bottom of a small hole or the base of a gear wheel C Light impact force Used for hardness measurement of work piece with hardened layer G Heavy impact force Direct hardness measurement on rough surfaces Appendix 3 Material Applicable tab...
Страница 25: ...urface R25 R50 4 HZ11 13 For cylindrical inside surface R11 R13 5 HZ12 5 17 For cylindrical inside surface R12 5 R17 6 HZ16 5 30 For cylindrical inside surface R16 5 R30 7 K10 15 For spherical outside surface SR10 SR15 8 K14 5 30 For spherical outside surface SR14 5 SR30 9 HK11 13 For spherical inside surface SR11 SR13 10 HK12 5 17 For spherical inside surface SR12 5 SR17 11 HK16 5 30 For spherica...