Model: zTA_PETT

Serving the testing industry for over a century, Thwing-Albert is committed at providing the best possible solution for any application. It is this commitment to customer satisfaction that sets Thwing-Albert apart as a comapany you can rely on with complete confidence.

With over 75 years experience as the original manufacturer of the Elmendorf design, the Thwing-Albert Elmendorf Tear Tester is recognise as the worldwide standard. Base on the classic design, PorTearTesters quickly and accurately measure the tear resistance of sheet materials including paper, textiles, roofing product, film and foils.

Three models are available, Electronic ProTear, Mechanical ProTear and Heavy-Duty Pro-Tear, which insures you get the instrument ideal for your application and budget.

The ProTear Tester offers several capacity configuarations ranging from 200 to 25,600 grams, and capacites are changed quickly and easily with augmenting weights. This configuration eliminates the necessity of multiple pendulums and simplifies the testing of different materials.

    ProTear Mechanical Model

The Mechanical ProTear is a basic tear tester that offers an economic alternative to the electronic version. This model offers the quick change pendulum configuration witout an electronic read-out. Test results are obtained by means of a pointer on a graduated scale from 0-100%

    ProTear Electronic Model

The electronic model provides several enhancements over the mechanical model. All test reults and statistics are calculated automatically and displayed on the built in screen. An RS-232 port enables test results to be transmitted to a printer or a computer.

Repeatability and precision are increased as pendulum movement is monitored by a digital decoder.
Ergonomically designed for ease of operation a conservation of laboratory space, the ProTear Electronic Model incorporates both mechanics and electronics into a single footprint design.

Other standard features of the electronic model include air actuated pendulum release and sample clamps, microcomputer-assisted pendulum balancing and membrane switch display panel.
The control panel provides one-touch clamping and test capabilities. Other functions include data entry of sample information such as sample ID, thickness, basis weight, sample direction and number of plies being torn. The "Units" key enables the simple configuration of result units.

    ProTear Heavy Duty Model

The Heavy Duty  Elmendorf ProTear is ideal for measuring the tearing strenght of textile materials and is available as an electronic or mechanical model. Extremely durable yet compact, this rugged instrument provides capacities of 6400, 12,800 and 25,600 grams with the use of augmenting weights.

Update an existing Heavy duty Elmendorf with an electronics package to quickly enhance the functionality of the unit.

    Spencer Impact Fixture (Optional)

The Spencer Impact Attachment was developed for use with Thwing-Albert's Elmendorf Tear Tester and complies with ASTM D3420-94. It provides one of the most repeatable methods of testing impact resistance of plastic films and packaging materials.
 The fixture closely approximates the strain rates experienced in end-use applications thereby results correlate well with actual material performance. The clamping mechanism is air-operate which ensures a secure hold and high level accuracy.

The Spencer Impact Attachment consists of a puncture arm that is permanently attached to the pendulum and is fitted on the end with an interchangeable impact head that is available in various shapes and sizes. The pendulum swings the impact head through the clamped specimenn and the energy required to puncture the sample is recorded.

    Specifications (Spencer Impact Fixture)

Standard Impact Head:
Radius: 12.7mm
Diameter: 19.0mm

O-Ring Clamp
Inside Diameter: 89mm

Sample Size:
127x127mm qsuare
133.35mm diameter circle

Air Clamp Assembly: min 60 pSI
Pendulum capacitys: 200, 400, 800, 1600, 3200 or 6400 gram.

Operation
The operation of the ProTear is fairly easy, simply secure the sample in the two clamps , make an initial tear with the attached blade and release the pendulum. The tearing resistance of the mateerial is measured via the transference 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 materials resistance to a continuing tear. The energy is reported as a percentage of the pendulum capacity of force.

Fast, Flexible Software
The ProTear's standard menu-driven software provides total control over the parameters and reports test data seconds after test completion. 

• Test Results include tear strength, tear per ply, average tear strength and tear index.
• Quickly enter sample data- thickness, basis weight, sample ID, sample direction
• Configurable display - test parameters, results and reports.
• Obtain results as percent of pendulum capacity, grams, pounds or millinewtons
• Calculated Statistics- average, high, low, standard deviation, range & variance.
• Configurable reports
• Provision to delete and restore test results

Data Acquisition Interface Software
An optional data  acquisition software program installs quickly with user friendly drop down menus. It provides the ability to capture serial data, customize it for specific requirementsand then transfer it to other applications such as Excel and Access. Use the capabilities of these applications to create graphs and reports that automatically update with real time data.  

Applications:
• Pulp
• Paper
• Plastics
• Film
• Foil
• Roofing products
• Textile

Features:
• Three models to choose from, Mechanical, Electronic & Heavy Duty
• Digital ecoder ensures accurate results*
• Electronic balancing of Pendulums*
• Configurable display shows test information and software menus*
• User friendly, one touh software*
• RS-232 data output*
• Quick capacity change with augmenting weights
• One-touch pneumatic clampimg and pendulum release
available*
*Feature of Electronic model

Specifications:
ProTear Mechanical Model
• Capacity: 400, 800, 1600, 3200 & 6400 gms
• Accuracy:±0.5% of Pendulum Capacity

Standards:
• ASTM F295, D752 D1424, D1922, D5734
• TAPPI T414, T496
• BS 4253, 4468
• CPPA D.9
• DIN 53862, 53128
• ISO 1974, 9290
• EN 21974
• SCAN P11
• ASTM D751, D5734*
*Heavy-Duty ProTear Standards

Options:
• Spencer Impact Fixture
• Ait Clamp Assembly
• Augmenting Weights
• Caliberation Checkweights- These are use for periodically verifying the caliberation of the instrument.
• 98-1 Sample Cutter
• ALPHA Sample Cutter

Connections:
• Electrical: 220/240 VAC @ 50 HZ or
• Electrical: 110 VAC @ 50/60 HZ
(please specify when ordering)

Dimensions:
ProTear Mechanical Model
• H: 483mm
• W: 539mm
• D: 229mm  
• Weight: 14.3kg
See PDF Data Sheet for dimensions of different models