Product description

VH-EM Vickers hardness tester adopts precise structural design, testing force changed from weight to sensor control, it makes the machine with simplicity structure and stable, accuracy force display. This series Vickers hardness tester is controlled by CPU on the whole testing procedure and adopts latest technology, such as high definition optical measurement system, photoelectricity sensing and cold lighting source. With the functions of inputting data through softkey, presetting testing loading time, choosing Knoop testing or Vickers testing, adjusting light intensity, it is also able to display the length of indentation, hardness value, holding time and count of test on the LCD. This series Vickers hardness tester could install CCD device, monitor device and camera head based on customer’s requirement.

Features:

• It is a half automatic and intelligent Vickers hardness testing machine , it adopts the close- loop force sensor to replace the traditional quality weight, this innovate design makes the instrument more accurate.
• Selection of testing force and dwell time is controlled and monitored on the front panel, it is automatic during the process of loading, dwell and unloading.
• It adopts digital microscopes with adjustable LED illuminator, it doesn't need the operator to read the detail length of indention ,it only needs the operator to aim the D1,D2 diameter of indention and press the length key twice, then the built-in computer can compute the Vickers scale
• Equipped with a large LCD screen,
• It doesn't need the operator to read the detail diameter of indention and check the Vickers testing table, it improves the speed and accuracy of hardness testing obviously.
• Hardness conversion among 17 hardness scales, and linking to PC in RS232 interface and cable.
• Mini printer build inside.

Technical specification:

Typ                                 VH-5E                     VH-10E                      VH-30E                    VH-50E
Test load (N)                    2.942/4.903             4.903/9.807              4.903/9.807/19.61     9.807/19.61/24.52
                                      9.807/19.61/24.52    19.61/24.52/29.42     24.52/29.42/49.03    29.42/49.03/98.07
                                      29.42/49.03             49.03/98.07               98.07/196.1/294.2    196.1/294.2/490.3
  
Test load (kgf)                  0.3 / 0.5                   0.3 /0.5 /1 /2             0.5/ 1 / 2 / 2.5          1/ 2 / 2.5 / 3
                                       1 /2 / 2.5 /3 / 5         2.5/ 3 / 5 / 10            3 / 5 /10 / 20 /30      5 / 10 /20 /30 /50

Carriage control                                              Auto Automatic loading, holding-up and unloading
Load holding time                                                                        0 ~ 60 s
Magnification of microscope               100 x (for observation)                               100 x (for observation)
                                                      400 x (for measurement)                             200 x (for measurement)
Meas. microscope                            if magnification 100x : 0.25 μm                    if magnification 100x : 0.25 μm
Min. measuring unit                        if magnification 400x : 0.0625 μm                  if magnification 200x : 0.125 μm
Measuring range                                                                         1HV - 2967HV
Objective magnification                             10 x a 40 x                                                      10 x a 20 x
Eyepiece magnificaiton                                                  magnification 10 x, resolution: 0.03 mm
Hardness indication                                                                       LCD display
Auto hardness conversion                                             HRA, HRB, HRC, HV, HK HBW atd.
Lens / indenter switch                                                                     auto turret
Specimen max. height                                                                      170 mm
Specimen max. depth                                                                       130 mm
Accuracy                                                    conform to EN-ISO 6507, ASTME 10-08, ASTME-384 standards
Power supply                                                                                    230V/50 Hz
Objectives                                                                             10x, 20x a 40x available
Dimensions                                                                       535 mm x 225 mm x 580 mm
Packing dimensions                                                                 630 x 460 x 710 mm
Weight                                                                brutto weight: 70 kg, net weight: 50 kg

Standard delivery:
•    buil-in 10x objective                    •   V-shape anvil
•    built-in 20x objective                   •   tool box
•    10x digital eyepiece                     •   manual
•    Vickers indenter                          •   power cable
•    HV1 hardness block
•    HV10 hardness block

Optional accessories:

•    CCD adapter                               •   Unequal specimen clamp
•    CCD camera                                •   Small flat clamp
•    10x digital eyepiece                     •   Mini printer
•    Digital CMOS camera                   •   Vickers indenter
•    6.8" LCD monitor                        •   Hardness block (150-750)HV5
•    V-shape Anvil                             •   Hardness block (150-750)HV10

•    Small bearing clamp                   •   Vickers measuring software with capture card