BRINELL Hardness Tester 900-357

• ? Load Cell driven system provides precise control of test force application
• ? Direct Touch Screen Controls
• ? Engineered to obtain highly sensitive and accurate readings
• ? Perfect for laboratories, workshops, tool rooms, inspection labs, etc.
• ? Measuring Range: 8-650HBW

Innovative closed-loop technology. The brinell hardness tester incorporates the latest load cell technology. The test load is applied via a closed-loop control unit with a load cell, a DC motor and an electronic measurement and control unit. The result is highly accurate Brinell hardness tester measurements at all test loads up to 0.5%. The common load overshoot or undershoot as known from traditional dead weight, or open-loop, systems is eliminated. The absence of mechanical weights not only eliminates friction problems but also makes the equipment less sensitive to misalignments caused by vibrations.
The 900-357 brinell hardness tester combines a touch screen computer and brinell hardness tester in one complete Brinell hardness testing package. All the required parameters can be selected on the panel computer. It's clear display and touch screen make it easy to use and eliminates user error. The clear video screen using it's CCD interface will directly display the dynamic indentation image, lock the image and automatically measure the Brinell hardness. The operator can choose the selectable conversion values among the hardness scales, save the results of each measurement and generate the image report. The load of test forces is accomplished using state of the art load cell system combined with precision mechanical drive.

1. Test force parameters
   • Test force is selectable:

   612.9N(62.5kg)	4903N(500kg)
   980.7N(100kg	7355N(750kg)
   1226N(125kg)	9807N(1000kg)
   1839N(187.5kg)	14710N(1500kg)
   2452N(250kg)	29420N(3000kg)

   • Test force control: Closed-loop system
   • Test force applied: Automatic (loading/dwell/unloading)
   • Loading time: 2~8 seconds
   • Dwell time: 1~99 seconds (selectable)
2. Indenter specifications(Included)
   • 2.5 mm ball indenter
   • 5 mm ball indenter
   • 10 mm ball indenter
3. Hardness test range: 8~650 HBW
4. Conversions: Rockwell, Vickers, etc. Selectable
5. Turrett Control: Automatic
6. CCD magnification: 20X
7. Appearance parameters:
   • Overall dimensions (H×D×W): (1100×600×405) mm
   • Maximum height of specimen allowed: 350 mm
   • Distance between the point of the indenter and the exterior panel: 150 mm
   • Weight: 280 kg
   • Power and voltage: AC 220V/110V±5%, 50~60Hz
   Repetition and tolerance of displayed value for the hardness tester:

   Standard hardness test block	Allowable Tolerance of displayed value%	Repeatability of displayed value%
   ≤125	±3	3
   125	± 2.5	2.5
   > 225	± 2.0	2 0