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ZEF Limited Access Digital Tension Meter

Made in Germany
ZEF Digital Tension Meter
Click images to enlarge.
3 capacities, 50, 100, 200 grams / cN

The Checkline ZEF Digital Tension Meter is designed for simple and accurate tension measurement on yarns, fibers, and fine wires. A trigger-operated roller shifting mechanism makes it easy to acquire the running material, a large backlit color display offers 3 display modes and auto-rotation to allow for easy viewing in any measuring orientation.

The ZEF features 3 ball-bearing mounted small diameter rollers for measuring in hard-to-access locations. Optional rollers are available for high-speed applications. The ZEF automatically "zeroes" the display using a special position sensor.


  • Backlit TFT Color Display
  • User-selectable units: cN, g, N and lb
  • Storage of MIN, MAX, last reading, average, and standard deviation
  • User-set MIN and MAX alarms with visual indicators
  • Adjustable electronic damping for enhanced stability when tension fluctuates
  • Automatic ZERO in all positions
  • Storage for 3 Custom Material Calibrations
  • CE approved
  • NIST-Traceable Calibration optionally available

ZEF Measuring Ranges

ModelCapacityResolutionMeasuring Head Width*Cal Material**
ZEF-500.5 - 50.0 g / cN0.1 g / cN43 mmPA: 0.12 mm Ø
ZEF-1000.5 - 100.0 g / cN0.1 g / cN43 mmPA: 0.12 mm Ø
ZEF-2001.0 - 200.0 g / cN0.1 g / cN43 mmPA: 0.12 mm Ø
* Width of filament guide
** Suitable for 95 % of applications – PA = Polyamide Monofilament
Custom calibration with customer-supplied samples is optionally available. Inquire

Guide Rollers

CodeMax Line Speed (mpm)Material
Standard900Hard-coated aluminum
Code K2000Hard-coated aluminum
Code T450Plastic (POM) black
Code W450Nickel-plated steel

Complete Kit

All models are supplied in a foam-fitted carrying case with a universal AC adapter / charger with interchangeable plug adapters.

Related Products

ZED Tension Meter
Click image for more info
Digital Tension Meter
- Backlit TFT Color Display
- User-selectable units: cN, g, N and lb
- Storage for 3 Custom Material Calibrations
DTS Digital Tension Meter
Click image for more info
Hand-Held Digital Tension Meter
- Large, backlight LCD-display with 3 user-selected display modes: Large-numeric, Numeric with Bar Graph, Numeric with Trend Graph (tension vs time)
- Storage for 4 Custom Material Calibrations


Accuracy±1% Full Scale, ±1 digit (Typical, ±0.5% Full Scale)
Over-Range Readings10% Full Scale, without accuracy guarantee
Overload Protection200% Full Scale
Sensing Roller Deflection0.5mm (maximum)
Display TypeColor-TFT 128 x 160
DampingUser-Selected Electronic Damping (moving average)
Auto Zero±20% Full Scale
Temperature CoefficientLess than ±0.01% FS/ °C
Auto Power OffAfter 3 minutes of non-use
Battery TypeLiPo , rechargeable - PN E08710
Battery Life25 Hours Continuous Use (Approx)
RollersSee table below
Operating Temperature50 to 100° F (10 to 45° C)
Ambient Humidity85% RH, max
Housing MaterialHigh-Impact Plastic (POM)
DimensionsSee Drawing in Downloads Section
Weight200 grams (Approx.)
Battery ChargerVia USB Mini Cable, Includes 100-240V AC adapter with 4 adapters (EU/USA/UK/AUS-NZ)