Controls Group http://www.controls-group.com/images/logo_controls.gif UNIFRAME 250 electromechanical universal tester, 250 kN cap. UNIFRAME 250 electromechanical universal tester, 250 kN cap.
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Universal testers - Steel (re-bars)

UNIFRAME 250 electromechanical universal tester, 250 kN cap.

EN ISO 7500-1 | ASTM A370
Main features
  • 250 kN UTM tension/compression machine, PC controlled
  • High accuracy load cell, with up to three other cells of lower capacity that can be connected for tests on low strength materials
  • Advanced closed loop control system to improve stability and produce a reliable performance
  • Wide range of test application including compression, tension, flexure, splitting and cyclic tests on different construction materials to ensure maximum versatility
  • Despite the large testing space, the frame ensures very high stiffness (200 kN/mm), making it ideal for Fiber Reinforced Concrete testing
  • Very fast reaction time and accurate load regulation, essential for FRC-FRP tests
  • Various software packages that can be used tailored to specific test method
  • Totally flexible: 14 channels are available to connect any desired load/displacement sensor
 Suitable for:
  • Tensile tests conforming to EN and ASTM
  • Tests under displacement and strain control on FRC-FRP concrete and Shotcrete
  • Marshall stability tests to EN and ASTM
  • Duriez tests conforming to EN and NF
  • CBR tests conforming to ASTM and EN
  • Compression tests on cement, concrete and other materials
  • Flexural and tension tests on various materials
General description
General description
The machine consists essentially of a robust two column high stiffness frame (200 kN/mm) with an upper crosshead, which can be adjusted in height, and of a lower mobile bi-directional crosshead moved by an electromechanical system with a single recirculating ball screw and powered by a brushless servomotor.
The machine features an advanced closed loop PID control system assuring very fast reaction time and extremely accurate test control, particularly important for FRC and FRP testing. The stress is measured by a load cell incorporated in the upper crosshead and the displacement by a high-resolution encoder.
The machine is fitted with two limit switches working at upper and lower full travel and two additional limit switches adjustable by the client in the desired position, according to the specific accessory in use. A remote push-button is used to quickly position the lower crosshead.
 
The machine is supplied complete with:
- Load cell 250 kN cap. Up to three other cells of lower capacity for tests on low strength materials can be connected
- Adapters to connect tensile gripes and accessories
- PC
- DATAMANAGER Software for compression and flexural tests


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Technical specifications

Frame:
Maximum load 250 kN
Max. vertical clearance, without accessories 930 mm
Distance between columns 650 mm
Crosshead travel 400 mm
Crosshead displacement resolution  0.001 mm
Test speed range  0.0001 to 175 (105 at full load) mm/min
Load rate range 1 to 9999 N/sec
Power 1 kW
Overall dimensions (hxlxd) 2100 x 960 x 800 mm
Weight approx. 600 kg
 
 
Hardware:
131.000 points effective resolution
High frequency closed-loop P.I.D. control
Control frequency 500 Hz
Sampling rate 500 Hz
4 channels for load sensors (pressure transducers and load cells)
6 channels to measure strain values with transducers (LVDT, magnetostrictive, potentiometric)
4 channels for strain measurement with strain gauges
High resolution encoder (0.001 mm)
Memorization of the calibration curve enables sensors to be connected and used immediately
Digital linearization of the calibration curve (multi-coefficient)
 
 
 
PC and software:
The PC allows remote control of the whole system and the automatic execution of test including:
fast approaching, zeroing, test execution, automatic test interruption after specimen failure or achievement of the target set by the user, numerical and graphical management of test results.
 

Ordering info

70-T2502
UNIFRAME 250, Electromechanical Universal tester 250 kN cap. 230 V, 50-60 Hz, 1 ph.
 
70-T2504
Same as above but 110 V, 60 Hz, 1 ph.

Accessories

Steel tensile testing
70-T2502/G
Upper and lower tensile heads complete with grips for round specimens 8 to 20 mm dia. and  flat specimens 0 to 15 mm (70 mm width).
82-T2502/UTS
Software for steel tensile testing conforming to ASTM, EN and ISO Standards
 
Concrete compression and flexural tests
70-T2502/2
Compression platens dia.160 mm complete with spherical seat
70-T2502/FL
Lower support beam for flexural bearers. Rollers not included.

Tests under displacement and strain control on FRC-FRP concrete and Shotcrete. (Using the 70-T2502/FL lower support beam, when necessary)
50-C1500/5
Auxiliary testing frame for the measurement of deflection of FRC beams (EN 14488-3, EN 14651, ASTM C1609).
82-P0031/C
High accuracy displacement transducer 10mm travel (2 pieces needed)
82-T2502/DC
Software for testing FRC-FRP and Shotcrete concrete
 
Determination of the modulus of elasticity (using the 70-T2502/2 compression platens)
Compressometer-Extensometer for Elastic Modulus determination
Strain gauges
82-T2502/EM
Software for the determination of the Modulus of Elasticity

Other tests
Follow the links relative to the category of tests of your interest:

Soil and soil-cement testing

Asphalt testing

Rock testing

Cement, concrete and masonry building units

 

 
 

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