79-05 Taber® Digital Stiffness Testers

INTRODUCTION

Precision instrument evaluates material stiffness

The Stiffness Tester utilizes a two directional pendulum-type weighing system to evaluate material stiffness, flexural strength, resiliency and elasticity properties. Force is applied to the lower end of the specimen by a pair of rollers attached to the driving disc. The resulting torque tilts the pendulum from its vertical position and a Taber Stiffness Unit reading (g.cm) is taken automatically when the pendulum mark aligns with the appropriate driving disc mark (71/2° or 15°). Predetermined sample length, deflection angle and rate of loading provide accurate and reproducible test results.

APPLICATIONS

Paper, Cardboard, Plastic, Metals, Fabric, Felt, Leather, Rubber, Wire, Tubing and other Sheet Materials

Models Available

Taber Stiffness testers are available in two models. Both units offer

bi-directional pendulum type testing in a range from 0-10,000 Taber Stiffness Units.

DIGITAL STIFFNESS TESTER

Onboard computer automates testing

The Digital Stiffness Tester has an on-board computer that automatically calculates and records stiffness testing data. Stiffness readings are automatically converted to the appropriate user-selected stiffness range, eliminating the need to manually multiply results by a scaling factor. The unit also calculates average, standard deviation and high/low readings. With the accessory ports, data can be either printed or downloaded to a PC. Plus, up to 1,000 readings can be stored in non-volatile memory. In addition to the internal real-time clock and calendar, stored readings can be identified with an optional user-defined label. Using the 16 button keypad, operators have the ability to select the direction, deflection and number of cycles. The instrument also offers the ability to perform testing in auto or manual mode.

A high resolution optical encoder and a non-contacting photo sensor are incorporated to make this instrument fully automatic. The onboard computer calculates and records testing data (average; standard deviation; high/low; time; date; and a user-defined label), and converts stiffness readings to the appropriate user selected stiffness range. Test results are displayed on a 4 x 20 character display screen, and can be printed, stored or downloaded to a PC.

TEST METHODS

Test procedures for the Taber Stiffness Tester have been established by a number of organizations. The following is a partial listing.

Organization	Standard No.	Method
Appita	P 431 rp-73	Stiffness of Paper and Paperboard
ASTM	D 5342	Test Method for Resistance to Bend, Paper and Paperboard (Taber-Type Tester)
ASTM	D 5650	Resistance to Bending of Paper of Low Bending Stiffness (Taber-Type Tester)
CPPS	D28P	Stiffness of Paper and Paperboard (Taber Method)
ISO	2493	Paper and Board - Determination of Resistance to Bending
JIS	P8125	Testing Method for Stiffness of Paperboard by Bending Load
SAA AS	1301.431RP	Methods of Test for Pulp and Paper - Taber Bending Resistance of Paper and Paperboard
TAPPI	T489 os-92	Stiffness of Paperboard
TAPPI	T566 om-97	Bending Resistance (stiffness) of Paper (Taber Type Tester in 0–10 Taber Stiffness Unit Configuration)
UNE	57-075-74	Determination of Stiffness of Paper and Board, Static Bending Method (Spanish)
ZZ	M-71D	Matting, Rubber, and Vinyl

CONNECTIONS

Electrical:
Digital Model- 115/230V, 50/60Hz, CE approved
Analog Model - 110V, 60Hz

OPTIONAL ACCESSORIES

Triple Cut Specimen Shear- Catalog number 79-03-01
Auxiliary Range Weight Set (3000 and 5000 Taber units) Catalog number 79-03-02
High Sensitivity Attachment Catalog number 79-03-04
Calibration Specimens
Wire / Tube Testing Apparatus

INSTRUMENT SIZE

	Digital
Depth:	394 mm (15-1/2 in.)
Height:	381 mm (15 in.)
Width:	254 mm (10 in.)
Weight:	11.3 kg. (25 lb.)

ORDERING INFORMATION

Digital Stiffness Tester - Catalog Number 79-05-00

Call Us Today

For additional information on TMI Products and Services, or to learn how Testing Machines can help your company profit through testing, please call us at 1-800-678-3221, or e-mail info@testingmachines.com.

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Taber Stiffness Testers