Four types of yarn Sensors

Four types of yarn Sensors

The yarn sensors are the machinery who control the operation of the spinning machines, depending of the presence or the absence of the yarn. The function of the yarn sensors is purposing immediately and automatically the electrical signal with a visible LED flashing when one or more yarns break or stop.

Four types of yarn sensor are offered by Fil Control:

1, Capacitive sensors

Capacitive sensors are noncontact devices capable of high-resolution measurement of the position and/or change of position of any conductive target. Capacitive sensors monitor tension variations produced by the electrical charges into the yarn in linear motion. Capacitive sensors respond equally to all conductors, they are not sensitive to material changes (PA, PE, PES, PP, Spandex …)

More information about capacitive sensors can be seen here

2, Optical sensors

Optical sensors control the presence of the yarn while the yarns are rectilinear movements, back-and-forth or ballooning motion. This is done through the infrared beam.

More information about optical  sensors can be seen here

3, Piezo-electric sensors

A piezoelectric sensor is a device that uses the piezoelectric effect, to measure changes in pressure, acceleration, strain or force by converting them to an electrical charge. Piezoelectric Sensors monitor a slow motion or record yarn vibrations of the yarn sliding on ceramic.

More information about piezo-electric sensors can be seen here

4, Electromechanical sensors

Thanks to the lower cost, the electromechanical sensors are usually used when the budget of the presence or absence of the yarn must be controlled.

More information about electromechanical sensors can be seen here