INSTRUCTION MANUAL
HARDNESS TESTER DHT- 400PLUS
V1.0.0
Page 1: ...INSTRUCTION MANUAL HARDNESS TESTER DHT 400PLUS V1 0 0...
Page 2: ...4 4 1 Selection of impact device 4 4 2 performance of impact devices 4 5 Functions of DHT 400PLUS 5 5 1 Technical specifications 5 5 2 Nomenclature of DHT 400PLUS 5 5 2 1 Main unit 5 5 2 2 Display ar...
Page 3: ...Appendix 1 Measuring range 16 Appendix 2 Features of impact devices 17 Appendix 3 Material Applicable table 18 Appendix 4 Supporting rings 19...
Page 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 HR...
Page 5: ...scale the notation for the converted hardness value should include the impact device used For example the Leeb hardness value 510HLD should be expressed as below when it is converted to Rockwell hardn...
Page 6: ...move or flex during testing Work piece less than 2kg 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...
Page 7: ...uld 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...
Page 8: ...00 Repeatability 0 5 Memory 10 customized files X 200 data each file Power Li rechargeable batteries continuous work 16 hours Auto turn off 1Min 2Min 5Min and never shutdown Working Temp 20 40 Storing...
Page 9: ...rdness scale Measuring value Average value Maximum value Minimum value Memory location Battery power Times of measurement average Material Impact device type 5 2 3 Keypad ON OFF Menu Esc Select Move C...
Page 10: ...arious parameter settings and management can be accomplished via the instrument menu Press key to Enter the menu and press key or key to select the setting items Press key to confirm setting 6 2 2 Ave...
Page 11: ...to confirm Then hardness scales setting Press key or to set hardness scale Press key to confirm 6 2 4 Tolerance If the measurement value is lower than the lower limit value or upper than the upper li...
Page 12: ...auge provides 2000 memory locations in 10 files from A to J 200 data per each file Press key and key to enter File Setting Press key to enter this item use key or key to set File No from A to J Press...
Page 13: ...o confirm 6 2 6 Print For users convenience the gauge offers optional Bluetooth printer to print original data 6 2 6 1 Print When users purchase the optional Bluetooth printer with DHT 400Plus togethe...
Page 14: ...inter before printing Press key and key to enter Pair Printer Press key to enter this item Meanwhile users switch on the printer and gauge of DHT 400Plus pairs printer automatically 1 If Pair printer...
Page 15: ...f functions Press key and key to enter AUTO SHUTDOWN Press key to enter this item Press key or key for setting Press key to confirm Notice It is not suggested to use the function of NEVER SHUTDOWN whi...
Page 16: ...is item Press key or key for setting Press key to confirm 6 2 11 Languages The gauge offers multi languages option for convenience of users Press key and key to enter LANGUAGES Press key to enter this...
Page 17: ...lete these values conveniently 7 Repairing and Maintenance In order to keep the accuracy and reliability of the instrument it is necessary of timely evaluation and maintenance 7 1 Maintenance of batte...
Page 18: ...ed 1 In the first 3 months after purchasing we supply complete free repairing and exchanging 2 We supply warranty of 24 months excluding the easy damaged parts such as impact devices cable Digital dis...
Page 19: ...nstruction manual 1 Pc 7 Carrying case 1 Pc 9 Appendix Appendix 1 Measuring range Table 1 Impact Device D DC D 15 Measuring Range LD 174 900 Material HLD HRC HRB HB HV HS Steel 300 900 20 0 68 0 38 4...
Page 20: ...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...
Page 21: ...Hardness Tester DHT 400PLUS 18 Appendix 3 Material Applicable table No Material D DC D 15 C G DL 1 Steel and cast steel 2 CWT ST 3 SST 4 GC IRON 5 NC IRON 6 C ALUM 7 BRASS 8 BRONZE 9 COPPER...
Page 22: ...rface 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...
