Protear Elmendorf Mechanical Tearing Tester

Manual pendulum release and manual operated grips

Range of interchangeable pendulums with capacities available up to 1600g. Pneumatic grips available as an option. Manufactured by Thwing Albert.

Manually operated, the Elmendorf Tear Testers are essential in materials quality control, providing more information on tearing properties than any other instrument. They are recognised as the worldwide standard and are the best way to accurately measure the tear resistance of sheet materials including paper, packaging, foils, textiles, non-wovens and plastic films.

Operation – The tearing resistance of a material is measured via the transfer of the potential energy stored in the raised pendulum to kinetic energy. A portion of this energy is absorbed during the tearing of the sample and is used as a measure of the material”s resistance to a continuing tear. The force required to tear the sample is reported as a percentage of the pendulum capacity.

The mechanical model is a basic tear tester that offers an economic alternative to the electronic version. It offers the same pendulum configuration but without the electronic interface. Test results are obtained by means of a pointer on a graduated scale from 0% to 100%.

Options

Augmenting weights – quick change of the pendulum capacities between 200 and 6400 g
Calibration weights of 200, 400, 800, 1600, 3200 and 6400 g to verify instrument calibration

Standards
DIN 53862; 53128; ISO 1974; EN 21974; ASTM D295; D751; D1424; D1922; TAPPI T-414; T-496BS 4253; 4468; CPPA D.9; SCAN P-11

Capacity: 200, 400, 800, 1600, 3200, 6400 g	Accuracy: ± 0.5% of pendulum capacity
Result reporting: Pointer	Results units: % of pendulum capacity
Display: Pointer	Specimen clamp: Mechanical or pneumatic
Pendulum release: Mechanical	Air supply: Compressed air 6 bar, required for pneumatic clamps only
Air temperature: operating 10-50 °C, storage -25-70 °C	Relative humidity: operating 10-85% (non-condensing), storage 5-90% (non-condensing)