Weft Tension Measurement Instrumentation
topic
Weft tension measurement during insertion uses non-contact optical tension sensors, piezoelectric contact measurement, or strain gauge systems mounted in the yarn path to measure instantaneous tension at specific points in the insertion cycle, with data capture at the microsecond resolution required to identify the tension peaks that occur at rapier pickup, transfer, and release or at air-jet nozzle exit and providing the diagnostic data that guides nozzle pressure, feeder coil count, and tensioner adjustment for insertion quality optimisation.
Role
Provides the measurement capability for systematic weft insertion quality diagnosis and optimisation by making the instantaneous tension profile during insertion visible for analysis, with tension measurement being the diagnostic tool that identifies whether insertion problems arise from feeder coil count control, nozzle pressure settings, tensioner adjustment, or yarn supply quality, enabling targeted correction rather than the empirical parameter adjustment that without measurement data may not address the actual cause of insertion irregularity.