At-line application
The interlace tester RAPID 600 is placed directly in the production, close to the spinning position. This together with the high-speed testing test principle means timely reactions to minor quality, hence less downgraded material with cost savings as a result. In comparison to other measurement test principles, RAPID 600 V features a continuous running test and there is no need to stop the yarn at detected nodes.

Detection of weak nodes
During the measurement with RAPID 600 V, a force sensor determines the strength of each detected node. Accordingly, detected nodes are classified as good nodes or weak nodes, i.e. the quality of detected nodes are automatically analyzed.

Easy results evaluation
Intuitive and easy analysis of measurement results. Thorough problem analysis with special key figures: No need for expert personnel.

Highly automated handling
RAPID 600 V features automatic yarn string-up, measurement and sample removal. An even higher automatization degree can be achieved if RAPID 600 V is used together with the optional SESS Sequential End Sampling System: With SESS, up to 24 positions are handled centrally and automatically for efficient sample feeding without any need for operator interference.

Test method
A vertically moving needle is periodically inserted into the passing yarn. The measurement gives feedback about the absolute number of interlaced nodes, node distance and their strength according to the applied ASTM standard (“good node or weak node”) as well as the absolute maximum distance between the detected interlaced nodes. Typically used for POY, FDY or DTY. Standardized according to ASTM D 4724.