textile machine at least one controlled yarn brake and a tensiometer which senses the yarn downstream of said yarn brake for at least measuring the yarn tension according to said invention the tensiometer is permanently arranged within the yarn path can be adjusted between a passive position and at least one deflection position and can be readjusted from said detection position to the passive position after a number of weft cycles which number suffices to represent at least the proper adjustment of a yarn tension target profile application_number US 49440104 A description a yarn processing system s shown in fig1 comprises at least one yarn feeding device f which is associated to a channel kl of a textile machine m and which supplies the textile machine m with a yarn y the yarn y is taken from a yarn bobbin l is intermediately stored on a storage body 1 of the yarn feeding device f and is inserted along a yarn path by an insertion device e into the textile machine m the textile machine m shown in fig1 is a weaving machine in particular a projectile weaving machine or a rapier weaving machine however but also could be a jet weaving machine alternatively the textile machine even could be a.