Dinamometri, Macchine, Strumenti e Sistemi per prove sui materiali e sui prodotti finiti

Overview

• Meets BS EN ISO 9513:2002 standard
  
• Rugged construction allows specimens to be tested through failure
  
• Rubber buffers absorb impact loads at sample break to safeguard extensometer arms
  
• Two travel optional lengths of 250 mm and 800 mm available depending on elongation of sample under test
  
• One cable connection to material test machine - no extra electronics required
  
• Suitable for tension and compression testing
  
• Vertical, horizontal and rotational extensometer position movement for easy access and attachment to sample (depending on mounting platform used)
  
• Low friction bearings and lightweight arms minimise inertia allowing sample movement to be instantly transferred
  
• Uses "plug & play" technology - once plugged into the test machine, the extensometer is ready for testing
  
• Straight and round knife blades supplied as standard for attachment to different types of samples

EXPlus general purpose contacting extensometers are designed for accurate strain and extension measurement of a wide range of materials such as semi-rigid plastics, elastomers, rubbers, wire, cable, textiles and more, up to a maximum sample thickness of 25 mm.

Available in two travel lengths, the EXPlus extensomer can be fitted to any Lloyd Instruments EZ and Plus Series materials testing machine. "Plug & Play" technology makes it is easy to install and calibrate.

The extensometer is designed with great flexibility of adjustment to ensure easy and precise attachment to the sample and best ergonomic test positioning.

Two mounting platforms are available. The unit can be stand mounted on the test machine's anchor pin at the base of the machine, enabling it to rotate from side to side for best possible access to the test area. In addition, the unit can slide horizontally towards and away from the sample as well as having vertical adjustment to allow for different sized grips and sample to be fitted. Alternatively, the unit can be mounted at the side of the test machine.

For added flexibility, the extensometer arms can be locked open to simplify attachment to the sample.

The two models, EX250Plus and EX800Plus, provide travel up to 250 mm and 800 mm respectively.

Applicable Standards

EX250Plus and EX800Plus extensometers have been designed to conform to ISO 9513:2002.

Overview

The Laserscan 200 is a versatile, non-contacting laser extensometer. A bright red scanning beam illuminates the sample and gauge markers, making it easy to set up and align.

The Laserscan 200 includes four gain settings allowing it to be used over a wide range of gauge lengths without adjustment to its calibration or position. It incorporates a digital display, which is used to facilitatecalibration and provides a continuous readout. The instrument has an analogue output (0-10V), which allows it to be interfaced with all Lloyd Instruments’ and other makes of materials testing machines.

Two reflective markers denote the gauge length of the sample. The Laserscan senses the leading edges of these markers and is unaffected by their shape, making accurate setting of the gauge length a very simple procedure.

An 80Hz laser beam sweeps the axial length of the specimen, illuminating and detecting the position of the gauge markers. As the sample is stressed the markers separate and any movement is measured. The Laserscan 200 is supplied with an adjustable stand to allow accurate positioning for different length test specimens. Specialist punches for applying reflective tape targets can be ordered separately.

Applications

The Lasescan 200 allows accurate strain measurement of a wide range of materials with varying ductility including plastics, film, rubber and textiles.

It eliminates any problems associated with contacting extensometers making it particularly suitable for elastomeric samples where the pressure of knife edges on a contacting extensometer could induce local stresses and weaken the sample.

Overview

A general-pupose, precision extensometer, designed for testing a wide range of rigid materials. The STGA operates in tension, compression and cyclic testing modes.

Its dual flexure design permits higher frequency operation, while eliminating sensitivity to vibrations. The extensometer is supplied with an attachment kit to allow quick, one hand mounting to the sample.

Suitable for use with Lloyd Instruments LR Series machines and EZ and Plus Series machines. Large number of models available depending on required gauge length and maximum elongation.

Features

• Tests specimen through failure
  
• Suitable for axial tension, compression and cyclic testing
  
• Over travel safety stop eliminates risk of damage
• Interchangeable components: arms, spacers and steel knife edges
  

Applications

For use with rigid materials such as metals, plastics, composites and ceramics.

Applicable Standards

The STGA extensometers conforms to ASTM E83 Class B-1, ISO 9513 Class 0.5