General Description

Powerful hydraulic system which offers high test throughput improving efficiency of the laboratory. High flexibility covering the following applica...
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Description

Powerful hydraulic system which offers high test throughput improving efficiency of the laboratory.

High flexibility covering the following applications:  
 

  • Steel
    • Tensile tests on steel rebars and rounds up to 78 mm dia.
    • Tensile test on steel flats up to 72 x 100 mm
    • Tensile tests on wire strands and electro-welded steel screen
    • Transverse tests on steel specimens
    • Bend and re-bend tests on steel specimens
    • Brinell with 10mm ball
    • Shear tests on rounds
       
  • Concrete
    • Compression tests on cubes and cylinders
    • Flexural tests on concrete beams
    • Indirect tensile on cylinders, cubes and paving blocks
    • Determination of the Modulus of elasticity (in a second dedicated compression frame)
    • Pull out test
       
  • Various
    • Compression tests on rock, masonry units, refractories etc.
    • Wire rope tensile tests
    • Nut and bolt testing
    • Tensile test on headed and shouldered specimens
       

The range includes four models of 1000 kN and 2000 kN cap. All models are controlled by the new and sophisticated HPU 200 control unit and are complete with PC, upper and lower hydraulically operated jaws, complete set of grips for rounds and flats, transverse test attachment and high precision load cell providing high accuracy from the very beginning of the load scale.

Loading frame
The frame consists essentially of a robust four columns frame with three sturdy crossheads: upper is directly connected to the lower one by two main columns; the middle one, moving on two screw columns, can be adjusted through an electric motor by using the dedicated push button panel, in order to set  the required vertical daylight both for compression and tensile tests; the lower is controlled by a simple effect piston centrally positioned. Jaws and wedge grips are included . The tensile  jaws are directly operated by the Power control console with a push-button panel. The compression tests are performed  between the lower and the mobile middle crossheads, using the suitable accessories.

Power and control console - HPU 200  
Control console HPU 200 features space-saving ergonomic design with small footprint and houses the hydraulic power unit, the electronic system and the PC to manage all the control functions.
Automatically performs steel tensile testing, compression, splitting tests, Elastic Modulus and Poisson's ratio determination on concrete specimens. See Accessories.
PC and software enable remote control of the complete system.

The system can be upgraded for a second frame connection and control by a special hydraulic valve system (70-T10/2F). Normally adopted to connect a concrete compression frame  up to 5000 kN capacity, to perform  not only compression, but other important tests as for example the Modulus of Elasticity, with the related software (model 82-SW/EM). Selection of the test frame via software.

For more info see Technical Specifications.

Safety features

  • Pressure valve that automatically stops the machine when the oil pressure approaches the limit
  • Maximum travel limit switches to control the position of the mobile crosshead
  • Software stops the machine when the maximum load is reached
  • Emergency stop button 

 

Products

Code
Description
Units

Technical Specifications

TECHNICAL SPECIFICATIONS TABLE

HPU POWER AND CONTROL CONSOLE
Hardware

  • 131.000 points effective resolution
  • Control frequency 250 Hz
  • Sampling rate 250 Hz
  • Closed-loop P.I.D.control
  • 6 channels (one dedicated to crosshead displacement) to measure elongation/displacement/strain with potentiometric, conditioned LVDT and magnetostrictive transducers
  • 4 channels for strain measurements with strain gauges
  • 2 channels for load sensors: load cell and load  cell/pressure transducer of possible second frame
  • simple multi-sensors connection and calibration file selection
  • digital linearization of the calibration curve. (multi-coefficient)
     

Hydraulics

  • Dual stage pump: centrifugal low pressure for fast approach (max. flow rate 9 l/min ) automatically switching to radial multi- piston high pressure (max. flow rate 3.2 l/min) for loading
  • Oil flow control by servo-controlled proportional valve
  • AC motor 3000 W
  • Maximum working pressure 700 bar
  • Oil temperature controlled by air cooling system
  • Console cabinet lined with soundproofing  material for operator's comfort.
  • Tank capacity: 30 liters
     

MANAGEMENT SOFTWARE AND SOFTWARE PACKAGES 
HPT Universal testers are supplied complete with RTM (Real Time Management) user interface environment allowing:

  • Remote control of the complete system for automatic test execution: quick platen approach, zeroing, test execution according to the selected test type, calculation of results, graphical and numerical management of results
  • Storage of single and multiple tests
  • Printing of customized test reports for both single and multiple tests
  • Real time and deferred management of tests data and results, either in numeric or in graphic format
  • Language selection (Latin characters only)
  • Units selection
  • Remote technical assistance/diagnostic via internet
     

The following Software packages are also included in the system:

  • UTS Software Specifically designed for tensile testing under load/stress control and crosshead separation control (by using the displacement transducer supplied with the machine), allowing:
    • Simultaneous display of stress/time,  stress/elongation %, elongation/time and  stress/elongation;
    • Possibility to overlap two elongation/stress graphs: one obtained with the included displacement transducer measuring crosshead separation travel and the other obtained w ith an optional extensometer (coaxial or universal);
    • Elaboration of tension test results: ReH, ReL or  Rp (calculated at three different elongation percentages selectable by the user), A, Ag, At, Agt, Ae, Rt, Z, elastic modulus E, etc, conforming to EN ISO 6892-1 and EN 15630-1 for steel rebars.
       
  • DATAMANAGER Software For compression, flexure and indirect tensile test on concrete, cement specimens and other construction materials allowing:
    • Real time monitoring of test data and stress/time graph
    • Automatic load detection failure and storage
    • Cement testing to EN 196-1 guided test procedure
    • Saving of batch file with automatic calculation of average and standard deviation


The following software package is available as option when upgrading the machine with the hydraulic system for a second frame connection (see 70-T10/2F).  

  • E-MODULE software For Poisson ratio and Elastic Modulus determination on concrete specimens allowing:
    • Free unlimited programmable load/stress cycles to fulfill any kind of test procedure
    • Real time monitoring of test data, stress/time, stress/axial strain, stress/lateral strain graphs
    • Automatic verification of sample centering and sensors functionality, as per Standard requirements
    • Automatic calculation of Initial and Final secant Elastic Modulus values

Standards

  • EN ISO 6892
  • EN ISO 7500-1
  • ASTM A370
  • EN ISO 15630-1

Accessories and Spare Parts

Code
Description
Units