Equipment - Microhardness Testers

Levels of Automation

• DHR 1000: Semi Automatic model with digital display on instrument
• DHV 3000: Automatic, motorzied X-Y stage, computer interface for automatic measurment and analysis

	Feature DHR 1000 DHV 3000 Loading Range 50 (20 optional) - 2000 gms 20 (10 optional) - 2000 gms Filar Micrometer (Eyepiece) Digital Thimble Digital Thimble X-Y Stage Micrometer Manual / Digital Thimbles Manual / digital Thimbles / Motorized X and/ or Y (optional) Optics 20X, 40X 20X, 40X, 10X (optional) Loading (Indenting) Auto - Button Push Auto - Button Push / PC control Load Change Mechanism Manual knob Manual knob Indentor Type Vickers Vickers or Knoop Hardness Display LCH LCD + CCD Upgrade to DHV 3000 Yes N/A Auto focus No Optional extra Imaging for diagonal measurement No Yes Computer + Printer No Yes Image Analysis compatible A/D card No Yes Image Analysis Library No Yes

Features of the Automated Micro Hardness Tester with Data Analysis (DHV 3000)

Precise Optical System:

• Objectives of 10x or 20x & 45x /R optically coated for measurements
• 10x eyepiece micrometer for manual visual measurements
• Separate visual and camera ports
• Centered optical system for positional accuracy in phase indentations
• Parfocal optical system
• Halogen lamp special Illumination provides for optimal contrast
• llumination. Adjustable and variable intensity of illumination with filter pockets
• Filters for monochromatic observations and measurements

Automated Indentations:

• Automatic Indentation with pre-selectable dwell period (10 to 55s)
• Loading range 10g(f) to 3000 g(f) (Other ranges available on request)

Automated Measurements:

• High resolution CCD camera interfaced to a Pentium Processor
• Real time display of specimen surface on the Computer Colour VGA Monitor
• Selectable Magnification options with different plate scales
• Least count of automatic measurement 0.15µ or better as area is computed

Automated computer controlled motorized X-Y Stage:

• Traverses possible in programmable pre selectable steps of 10µ (or multiples of 10µ) on both the axes
• Large stage area 135 mm X 135 mm
• Traverse length 20 mm on X and Y axes
• Manual over-ride Stage movement control possible with the Computer keyboard
• Leveling Vice for tilted specimens and special component holders available on request
• Stable base plate with leveling screws.
  
  Following are common reports generated by the DHV 3000

Report Screen Microhardness Analysis (Image at X 0.50, Y 0.00