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ZEF Digital Economical low tension measuring instrument

Made in Germany4 capacities, 50, 100, 200 and 500 grams or cN

The new CHECK-LINE models ZEF and ZED Tension Meters employ a strain-gauge system for accurately measuring the running line tensions on a wide variety of yarns, fibers and fine wires. Its trigger-operated roller shifting mechanism makes it easy to acquire the running material.

Single-button automatic zero permits operation in any orientation while maintaining highest accuracy.

  • Simple handling
  • Adjustable damping
  • Easy to read LCD display
  • Light weight
  • Everything in operator's view:
    - the guide rollers
    - the measured material
    - the readings
  • Housing made of high-strength plastic
  • »Auto-Zero setting« using a push button for measurement in different measuring positions
  • Slim filament guide with small guide rollers - ideal for limited access space
  • Filament guide and roller shifting mechanism ensure easy acquisition of the running material
  • Battery operated
  • Ball-bearing mounted, V-grooved guide rollers
  • Optionally available: Inspection Certificate 3.1 according DIN EN 10204 with calibration report
  • Certificate of Compliance with the order 2.1 according DIN EN 10204 is included

Tension Ranges
ModelRanges Measuring Head Width* mmSCHMIDT Calibration Material**Resolution 
ZEF-100 0.5 - 100.0 cN 43PA: 0.12 mm Ø0.1 cN 
ZEF-200 1.0 - 200.0 cN 43PA: 0.12 mm Ø1 cN 
ZEF-50 0.50 - 50.0 cN 43PA: 0.12 mm Ø0.1 cN 
Other units of measure are available, such as g.
* Width of filament guide
** Suitable for 95% of applications - PA = Polyamide Monofilament

Special calibration using customer supplied samples is recommended, if process material differs significantly from the SCHMIDT calibration material in diameter, rigidity or shape. For this purpose a material sample of about 5 m should be supplied.

ZEF Models

Miniature bearings make these models ideal for delicate fibres/yarns and fine electrical wires, as well as for applications where access is restricted.

For Spandex or similar materials, specific model ZEF-100-T.

Complete Kit
All models are supplied in a foam-fitted carrying case with worldwide AC-Charger with interchangeable multi-plug adapters.


Calibration:SCHMIDT factory procedure
Accuracy:±1% full scale ± 1 digit or better
Overrange (approx.):10% full scale, without accuracy guarantee
Overload protection:100% of tension range
Measuring principle:Strain gauge bridge
Measuring roller deflection:0.5 mm max.
Signal processing:digital
A/D converter:14 bit
Display:3½-digit LCD, 10 mm high
Display update rate:0.5 seconds
Self-frequency:250 Hz
Autozero:±20% full scale
Auto Power off:After 2 minutes of non-use
Temperature range:10-45ºC
Air humidity:85% RH, max.
Power supply:2 size AAA batteries 1.5 V
(about 30 hours of continuous use)
Housing material:Plastic (POM)
Housing dimensions:157 x 85 x 32 mm (L x W x H)
Weight, net (gross):approx. 200 g (600 g)

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