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RFS150 On-Line Tension Sensor

Made in Germany
0-100g ... 0-500 grams (0-1N ... 0-5N) = Low Range (LR)
0-1000g ... 0-60 Kg (0-10N ... 0-600N) = Standard Range (SR)
0-100Kg (0-1000N/1kN) ...................... = High Range (HR)
0-200Kg ... 0-300Kg (0-2kN ... 0-3kN) = eXtended Range (XR)

The Honigmann RFS® 150 is a single roll tension sensor designed to measure the running line tensions of yarn, wires, optic fibers, cables, tapes, bands, wraps, webs, foils and similar process materials. Existing rollers with 20-180 degree wrap angles can be converted for use as RFS measurement locations.

The RFS features a unique strain-gauge design delivering extremely precise and stable measurements while providing maximum overload protection. RFS sensors are used in a variety of low and high-range applications, such as measuring 1 or 2 grams on fine denier yarns/fibers to measuring wire/cable up to 300Kg / 3000 N / 660 lbs.

High precision mechanical design ensures the calibrated accuracy of the RFS remains unchanged throughout the sensor’s service life. The measurement is not influenced by the force introduction point, i.e. the sensor is not affected by lever arm action or any axial tilt torques which might occur.

Measurement Principle
The force acting radially at the bearing journal, along the measurement vector, causes a microscopically small, elastic deformation of the complex load cell. This deformation is registered at a pre-determined position by way of strain gauges and is then evaluated electronically. The high mechanical stiffness of the load cell enables measurement with virtually no excursion. This tension measurement principle is based on the evaluation of the force applied radially and transferred to the sensor by way of the bearing journal. This force is determined by the reversing geometry and the line tension.


  • Resolution of 0.1% and better
  • Rugged stainless steel housing is environmentally sealed
  • Threaded housing with lock-nuts permits easy mounting and simple alignment
  • Overload protection up to 800%
  • Wide variety of precision, ball-bearing mounted guide rollers are available
  • Supplied with a 10 ft. (3 m) shielded cable. Optional lengths are available
  • Custom sensor designs can be developed to meet specific applications requirements. Inquire.
  • Existing rollers with 20-180 degree wrap angles can be used as measurement points for the RFS.

Tension Ranges

ModelCapacity (Resultant Force)Bearing Journal Diameter (mm)Range Type
RFS150-1N100 g / 1 N / 0.22 lbs5, 8 or 10 mmLR
RFS150-2N200 g / 2 N / 0.44 lbs5, 8 or 10 mmLR
RFS150-3N300 g / 3 N / 0.66 lbs5, 8 or 10 mmLR
RFS150-4N400 g / 4 N / 0.885, 8 or 10 mmLR
RFS150-5N500 g / 5 N / 1.1 lbs5, 8 or 10 mmLR
RFS150-10N1 Kg / 10 N / 2.2 lbs5, 8 or 10 mmSR
RFS150-20N2 Kg / 20 N / 4.4 lbs5, 8 or 10 mmSR
RFS150-30N3 Kg / 30 N / 6.6 lbs5, 8 or 10 mmSR
RFS150-40N4 Kg / 40 N / 8.8 lbs5, 8 or 10 mmSR
RFS150-50N5 Kg / 50 N / 11 lbs8, 10 or 12 mmSR
RFS150-60N6 Kg / 60 N / 13 lbs8, 10 or 12 mmSR
RFS150-100N10 Kg / 100 N / 22 lbs8, 10 or 12 mmSR
RFS150-200N20 Kg / 200 N / 44 lbs8, 10 or 12 mmSR
RFS150-300N30 Kg / 300 N / 66 lbs8, 10 or 12 mmSR
RFS150-400N40 Kg / 400 N / 88 lbs8, 10 or 12 mmSR
RFS150-500N50 Kg / 500 N / 110 lbs10 or 12 mmSR
RFS150-600N60 Kg / 600 N / 130 lbs10 or 12 mmSR
RFS150-1000N100 Kg / 1000 N / 220 lbs10 or 12 mmHR
RFS150-2000N200 Kg / 2000 N / 440 lbs12 mmXR
RFS150-3000N300 Kg / 3000 N / 660 lbs12 mmXR

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Tension & Force Definitions


Measuring PrincipleStrain Gauge
Accuracy±0.5% Full Scale or better
Sensor Excitation10 VDC (12 VDC, max.)
Sensor Output1.5 mV/V
Input Resistance350 Ohms
Output Resistance350 Ohms
Overload Protection400 - 800%
Deflection0.07mm (max.)
Housing MaterialStainless Steel
Environmental ProtectionIP50 (Splash-Proof)
Cable Type4.5 mm diameter shielded cable with bare leads
Cable Length3 meter / 10ft standard, longer lengths available, inquire
Operating Temperature15 to 155° F (-10 to 70° C)
Fequency Responce5 msec (200 Hz)
Resultant Force[Line Tension] x sine α [wrap angle]
Weight400g (approximate)


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