Stiffness Tester KWS

3 measuring ranges from 0 - 500 mN up to 1 - 20 N

Stiffness tester to determine the suppleness and stiffness of fabric, fleece, plastic foils, leather, paper and other limp materials
Softometer with RS 232 interface for data processing with a PC

Special Features

  • High repeatability of test results through
    - Elimination of subjective influence by the operator
    - Precisely defined test conditions
    - Electronic timing of the test procedure
  • 2 operating modes:
    - Display of measurement result after 10 sec.
    - Instant display of actual values, which change over time when testing materials with relaxation ability
  • Stiffness tester with tilting test plate, 30░ bending radius
  • Recommended sample size: Max. width 60 mm, max. length 75 mm, max. thickness 5 mm
  • Options for extending the measuring range by testing multiple layers simultaneously
  • Softometer with high-resolution LCD display
  • RS 232 interface for data transfer to PC

Standard Features

  • Easy to use
  • Tabletop unit
  • State-of-the-art sensor technology
  • Stiffness tester for mains operation 230 V AC



A test sample of defined size and thickness is clamped onto the test plate. The test plate is tilted by 30░ into the test position, thereby bending the sample under test. The sample presses against the force sensor and the measured force is displayed in newtons (mN).

lick picture for operation drawing

Available models

ModelMeasuring RangeResolution mN
KWS-5000 - 500 mN0.5
KWS-20000 - 2000 mN1
KWS-20K1 - 20 N10

Delivery Includes

Softometer with transport packing case, AC-adapter, torque wrench and operating instructions in german or english


Unit of measure:mN (0.001 N)
Overload protection:50 % full scale, display in case of overload
Sample bending angle:30░, max.
Sample dimensions:Max. width 60 mm, max. length 75 mm, max. thickness 5 mm
Display:Digital, LCD, 13 mm high
Operating modes:Actual value display or display after 10 sec., user-selectable
Interface:RS 232 C (8, 1, N, 9600)
Power supply:AC adapter 230 V AC, 50 Hz
Temperature range:5 - 45 ░C
Air humidity:85 % RH, max.
Weight net (gross):Approx. 2.4 kg (4 kg)
Dimensions:280 x 180 x 225 mm (LxWxH)

Specifications subject to change without notice!



New Tension Meter


With one click you can download the information sheet for our new tension sensor.


Call us!

+49 (0)8638 9410-0
Can't find what you're looking for? Then get in touch with our experts.

Send us a fax!

+49 (0)8638 4825
You can also send us a fax with your message or request.

Contact via E-Mail!
Or feel free to email
us via our contact form!