ZEF Digital Economical low tension measuring instrument Made in Germany4 capacities, 50, 100, 200 and 500 grams or cN

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ZEF Digital Economical low tension measuring instrument

4 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
Model Ranges Measuring Head Width* mm SCHMIDT Calibration Material** Resolution
ZEF-100 0.5 – 100.0 cN 43 PA: 0.12 mm Ø 0.1 cN
ZEF-200 1.0 – 200.0 cN 43 PA: 0.12 mm Ø 1 cN
ZEF-50 0.50 – 50.0 cN 43 PA: 0.12 mm Ø 0.1 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 rollers make these models ideal for delicate yarns/fibers and fine wires as well as those application where access space is limited.

For Spandex and similar materials, specify 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.
Damping: adjustable
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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