ZHU250CL hardness testing machine

Combining the best

The ZHU250CL hardness tester employs the latest technology, with closed-loop control for test load application. The modern system for test load application (closed loop) stands out because of its precision. Accuracy exceeds the requirements of all relevant ISO and ASTM standards.
ZHU250CL universal hardness tester with LVDT technology

Advantages and features

  • The latest technology is employed, with closed-loop control for test-load application. This innovative force application system was developed to obtain a better ratio between control variable and noise interference than with conventional load cells, enabling significantly more accurate force-application. The accuracy of all loads is better than 1% according to all relevant ISO standards.
  • Extremely wide test-load range: 0.5 kg to 250 kg.
  • Unique 4-plus-4 turret for up to four lenses and four indenters at the same time. Unique vertical configuration of turret enables testing at difficult-to-access locations.
  • Adjustable dwell times 5 to 60 seconds.
  • Indenter approach velocity adjustable.
  • Rockwell depth measurement by market-leader Indentec with depth-sensor accurate to 0.1 Rockwell units.

Extended range of application with HD software

  • Benefits of software-controlled semi- or fully automatic hardness testing for all scales
  • Hardness tester operation and control via HD software (ZHμ.HD).
  • 1.3-megapixel USB camera.
  • High-resolution overview image of specimen surface via scan function using either 2.5x lens or flatbed scanner in the fully automatic version.
  • Easy positioning of test points in overview image.
  • Automatic indentation measurement with shadow correction eliminates operator influence in determination of hardness values.
  • Motorized X-Y tables with various travel lengths.
  • Determination of effective case depth.
  • Data transmission to testXpert II.
  • RS232 or USB data export.

Technical overview

Type

ZHU250CL-S

ZHU250CL-A

Test weights

0.5 to 250

0.5 to 250

kg

Test-weight resolution

0.1

0.1

kg

Vickers HV

Standard load steps from HV1

Standard load steps from HV1

Brinell HBW

Standard load steps with 1mm, 2.5mm and 5mm balls up to 250 kg

Standard load steps with 1mm, 2.5mm and 5mm balls up to 250 kg

Rockwell and Rockwell superficial

All scales as per standard

All scales as per standard

Display

PC monitor[1]

PC monitor[1]

Data input

PC keyboard[1]

PC keyboard[1]

Focusing

manual via handwheel

Automatic, motorized via lead screw

Optics

1.3-megapixel camera

1.3-megapixel camera

HD software

ZHμHD-S

ZHμHD-A

Indenter

up to 4 optional

up to 4 optional

Lenses

up to 4 optional

up to 4 optional

Data export

RS232/USB

RS232/USB

Test area (height x depth)

379 x 150

379 x 150

mm

Dimensions

600 x 1100 x 400

600 x 1100 x 400

mm

Weight

150

150

kg

Electrical supply

3A single-phase, 240/120V, switchable

3A single-phase, 240/120V, switchable

  1. PC, monitor and keyboard included in delivery.

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ZHU250CL universal hardness tester

The very wide test force range from 0.5kg to 250kg accommodates Vickers, Knoop, Rockwell and Brinell tests to ISO 6507, ISO 6508 und ISO 6506.

ZHU250CL semi-automatic hardness tester in use
  • Hardness tester operation and control via intuitive HD software
  • High-resolution overview image of specimen surface via scan function

Combining the best - cutting-edge hardness testing

Mr. John Piller
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