Tension Sensor SFD

Special Features

Tension sensor SFD without amplifier, output signal mV/V

Sensor for installation at an existing deflection pulley; the in- and outcoming angle has to be constant

Existing rollers with 20 – 180 degree wrap angles can be used as measurement points for the sensor

Directly, axial force transmission

M25 x 2.5 threaded housing with lock-nuts permits easy mounting and simple alignment at a deviating point

The progressively adjustable axial mounting depth using two mounting screws wrench size 32 enables an accurate positioning of the guide roller

10 times overload protection, max. 2000 N

Easy mounting of SCHMIDT rollers or customer provided rollers, send us your request!

IP 54 (dust tight and dripping water) protected

Special design to be used in explosive areas available on request

Standard Features

Required power supply + 10 V DC regulated

Rugged, stainless steel housing

Sensor with highly mechanical rigidity

Supplied with a 5 m shielded cable with open ends (optional lengths are available)

Optionally available: Inspection Certificate 3.1 according EN 10204 with calibration report (only available in combination with a display)

Lern more about the different tension measuring systems

You are not sure, which system is right for, or where the differences are? Here we explain it for you.

Available Models

ModelNominal Load
SFD-1010 N
SFD-2020 N
SFD-5050 N
SFD-100100 N
SFD-200200 N
SFD-500500 N

Anzeige SC-PM und Vorverstärker SCV-1For the tension sensor SFD we offer different display units for one or more sensors, as well as strain gauge amplifier.

Find further information at display units and amplifier


Measuring range:10 bis 500 N – nominal load
Accuracy:0.5 % FS (full scale)
Max. applied force:160 % of nominal load, overload protection afterwards
Overload:10 times of nominal load, max. 2000 N (depending on measuring range)
Transverse force at the axle:Max. 100 % nominal load
Axle deflection:< 0.5 mm
Measuring principle:Strain gauge bridge
Output signal:1 mV/V
Max. power supply:10 V DC
Connecting cable:5 m
Bridge resistor:350 Ω
IP code:IP 54
Temperature range:10…70° C
Weight, net (gross):Approx. 400 g (approx.. 700 g) inclusive 5 m cable

Specifications subject to change without notice!


Tension sensor SFD can be easily mounted everywhere a deviating point respectively a guide roller is built in at the machine. These places can be used as measuring point, assumed the in and outgoing angle is constant.

Calculating the Tension Range

Determining the tension range of 1-roller tension sensors

The tension range can be calculated for every wrapping angle with this formula :

Formular to determine the force of single roller tension senorsWhen selecting the nominal measurement force it is necessary to take into account the weight of the guide roll and raise the nominal load respectively, particularly when working with small nominal forces.

Axle Jounal

DesignAxle diameter in mmSuitable Bearing
Standard10 f76000/6300

Guide Rollers

Zugspannungsmesser SFD mit F RolleYou can mount your own guide rollers or Schmidt rollers. A big number of rollers with different geometry and different materials are available on request – send us your demand !

Cable Connection

  1. Axial output Code T (Standard)

    cable connection Code T (standard)Axial output with screwed cable gland, cable length 5 m (longer cables available on request)

  2. Straight plug Code N2


    straight cable connection Code N2Axial output with straight plug connection M12, cable length 5 m (longer cables available on request)

  3. Right-angled plug Code S2

    gewinkelte Steckverbindung Code S2

    Axial output with right-angled plug connection M12, cable length 5 m (longer cables available on request)


Dimensions of tension sensor SFD to download.
Delivery Includes

Tension sensor SFD with cable and transport packaging, operating instruction in German or English (as requested)

How To Order

To order tension sensor SFD:

Please indicate the complete order number, e. g.:

Model with tension rangeOptionComplete Order No.

Instruction Manual

Download the instruction manual of tension sensor SFD.

If you want to get a quote or want to place an order please contact us.

+49 (0)8638 9410-0

+49 (0)8638 4825