Principle of tensile force measuring with IMP-TENS system

The tensile force measurement is based on defined deflection of material to be measured from the straight running direction.
The force which is applied to this deflection is being measured. In order to determine the tensile force of the material, the angle of deflection must be known.

This principle is generally called “3 roller system". It is the basis of many tensile forces measuring systems.
According to this method it is possible to measure the tensile forces of wires of a rotating stranding machine by a stationary fixed sensor which is located outside.By rotation of the machine every wire will arrive at the sensor which is slightly deflecting the wire from its straight direction. For a precise measurement a deflection of about 5° will be sufficient, which is equivalent to a wrap angle around the sensor of 10°.

When a wire is reaching the sensor it runs up on a ramp to the measuring peak. At the top level of the ramp which is the measuring skid there is a defined wrap angle existing. The force on the measuring head is reaching here the maximum. The connected analysis device identifies this force pulse as measured value.

The mechanical load of the wires during this process is very small. Furthermore the time of contact by the sensor is very short (in the region of milliseconds), so all possibility of wire damages is nearly excluded. Contactless operating proximity switches register the
machine rotation and identify each single wire.

Data sheet IMP-TENS32-TI (Download)

Data sheet IMP-TENS Software (Download)

IMP-TENS questionaire (Download)