Leeb Hardness Tester
LM100
Operating Manual
YUSHI INSTRUMENTS
Page 1: ...Leeb Hardness Tester LM100 Operating Manual YUSHI INSTRUMENTS...
Page 2: ...ss Requirements 9 4 1 3 Surface Hardened Layer Thickness 9 4 1 4 Curved Surface Requirement 9 4 2 Support of Test Piece 10 5 Operation 10 5 1 Display 10 5 2 Keyboard 11 5 3 Turn on the Instrument 11 5...
Page 3: ...uce directly proportional voltage with the impact velocity The Leeb hardness values are calculated by the following formula HL 1000 Vb Va In Which HL Leeb hardness values Vb the voltage produced durin...
Page 4: ...7 2g 7 8g 3 0g 20 0g 5 5g Test Tip Hardness 1600HV 1600HV 1600HV 1600HV 5000HV Test Tip Diameter 3mm 3mm 3mm 5mm 3mm Test Tip Material Tungsten Carbide Tungsten Carbide Tungsten Carbide Tungsten Carbi...
Page 5: ...7 m 10 m Impact Device Applicable Scope DC Used for very confined spaces such as holes cylinders internal measurement DL Used for extremely confined spaces D 15 Used for measuring in grooves recessed...
Page 6: ...D type impact device Standard Optional C G DC DL D 15 Accuracy 6HLD HLD 800 Repeatability 6HLD HLD 800 Measuring Direction Vertically downward inclined downward Level inclined upward vertically upwar...
Page 7: ...ce 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 special support rings should be selected 4 2...
Page 8: ...e button to select the probes 5 4 4 Impact Direction Press DIR button to select impact direction Figure 5 4 5 4 5 Impact Times Press TIME button to set the impact times from 1 7 which will calculate t...
Page 9: ...7 Data Save and Read Setting 5 7 1 Storage Testing Result Press MEM storage button to set the saving function the S symbol will be shown on the display The tester will save the testing results automat...
Page 10: ...is will cause the measuring error so we design a calibration procedure of using the standard testing block to calibrate Press up and down button at the same time after the power on then the tester wil...
