Yarn Sensors

Electronic or Electro-mechanical devices change state depending of the presence or the absence of the yarn, the yarn sensor is the most sensitive protection for the spinning machines.

During the yarn processing, the sensor purpose is to immediately and automatically detect the breakage or stoppage of one or more yarns.

The sensor will give the operator on duty an alarm with a visible LED flashing signal. It will simultaneously send out an electrical signal to the yarn cutter to cut off the broken yarn and grip the cut end, or send a digital signal to the PLC.

Fil Control offers 4 types of sensors:

Capacitive sensors
Monitor the tension variations produced by the electrical charges into the yarn in linear motion.
(PA, PE, PES, PP, Spandex …)

Optical sensors
Thanks to infrared beam, optical sensors control the presence of the yarn during linear, to-and-fro or ballooning motion.

Piezo-electric sensors
Monitor a very slow motion or record yarn vibrations of the yarn sliding on ceramic.

Electromechanical sensors
Are used when the presence or absence of the yarn must be controlled at a lower cost