SFZ
Tension Sensor

8 Tension ranges available
from 0 – 10 N up to 0 – 2000 N
For measuring the tension of running wires, fibre optics, cables, ropes, slim tapes and foils

Single roller tension sensor for installation at an existing deflection pulley

Special Features

  • Tension Sensor SFZ without amplifier, output signal mV/V
  • Sensor for installation at an existing deflection pulley; though 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 application
  • The progressively adjustable axial mounting depth using a drill hole (Ø 50 mm), enables accurate positioning of the roller depending on the material path
  • High overload protection (max. 10 times of nominal force, However 3200 N max. )
  • Easy mounting of rollers provided by the customer or from SCHMIDT. Send us your request !
  • IP 67 (dust tight and ingress of water) protected, optional IP 54
  • Different clamping devices are optional available

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

 Available Models

Model Nominal Load in N
SFZ-10 10 N
SFZ-20 20 N
SFZ-50 50 N
SFZ-100 100 N
SFZ-200 200 N
SFZ-500 500 N
SFZ-1000 1000 N
SFZ-2000 2000 N

SPECIFICATIONS

Tension Range: 10 up to 2000 N – nominal load
Accuracy: 0.5 % nominal load
Max. applied force: 160 % of nominal load, overload protection afterwards
Overload: 10 times of nominal load, max. 3200 N (depending on measuring range)
Transverse force at the axle: Max. 100 % nominal load
Axle deflection: Approx. 0.5 mm
Measuring principle: Strain gauge bridge
Output signal: 5 – 20 N: 1 mV/V
From 50 N: 1.5 mV/V
Max. power supply: 10 V DC
Connecting cable: 5 m
Bridge resistor: 700 Ω
IP code: IP67 (IP 54 optional)
Temperature range: -10…+70° C
Housing: Stainless-steel
Weight, net (gross): Approx. 1100 g (1600 g) inclusive 5 m cable

Specifications subject to change without notice!

MOUNTING

Tension sensor SFZ can be easily mounted everywhere a deviating point respectively a guide roller is built in at the machine. These places can be use as measuring point, assumed the in and outgoing angle is constant.
For mounting, the sensor can be clamped on each position of the cylinder. Alternative a mounting flange or a clamping block is available (see additional Options).

CALCULATING THE TENSION RANGE

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

When 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

Design Axle Diameter in mm Suitable Bearing
A (Standard) 10 f7 6000/6300
B 15 f7 6002/6302
C 17 f7 6003/6303

According to the application different bearing journals are available (standard: code A = 10 mm)

More information to the design see dimensions

GUIDE ROLLERS

You 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

Code T – Axial output (Standard)

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

 

 

 

 

 

 

Code N2 – Straight plug

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

 

 

 

 

 

Code S2 – Right-angled plug

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

OTHER OPTIONS

Code R – Radial output

Plug and cable gland code T, N2 and S2 are available with radial cable output.

 

 

 

 

 

 

 

 Code P – IP 54

Low-cost model of the sensor according to IP code 54, protected against dust in sufficient quantity and splash water.

 SFZ-AN – Mounting Flange

for mounting the sensor . The flange (stainless steel) can be positioned and clamped at any place of the sensor.
Order number: SFZ-AN

 

 

 

 

 

 

 

 

 

 SFZ-KB – Clamping Block

made of aluminium alloy for mounting the sensor. The flange can be positioned and clamped at any place of the sensor.
Order number: SFZ-KB

DELIVERY INCLUDES

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

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