turck Articles

Magneto-Resistive Sensors

TURCK 7/23/2018
Magneto-Resistive Sensors

What is a magneto-resistive sensor?
TURCK Magnetic Cylinder Position Sensors are used for the detection of magnet equipped pistons on pneumatic cylinders through a nonmagnetic wall. A patented, state of the art electronic magnetic circuit is the basis of operation for these sensors. The sensors are manufactured using a polypropylene over-molding technology, which allows the product to be completely sealed into small sizes without compromising durability. The small size also allows for very low profiles that reduce the chance of damage when mounted to the outside of the cylinder.

Turck has taken the approach of using two sensor styles, along with various adapter brackets, to fit individual cylinders for the majority of applications. The “UNT” and “UNR” housings were designed to fit into specific grooves found in extruded profile type cylinders, as well as standalone devices without the need for any additional brackets. The UNT style was made to fit into a standard “T” groove and the UNR was made for the “C” groove, neither requiring additional hardware for standard mounting. Both of these designs allow the sensor to be dropped in from above anywhere along the span of the cylinder.

Where can I use a magneto-resistive sensor?

• Material handling
• Automated assembly
• Stamping
• Conveying
• Sorting
• Product positioning
• Industrial robots

Why Choose Turck magneto-resistive sensors?

Reliable mounting
TURCK Magneto-Resistive Sensors
The sensor is mounted in the cylinder’s groove and tightened with a screw. Located near the cable outlet, the screw helps make sure the sensor doesn’t move during vibration or if the cable is pulled.

Secure installation
TURCK Magneto-Resistive Sensors
A wing screw made of tool steel requires only a quarter-turn to tighten securely.

Compact housing style
TURCK Magneto-Resistive Sensors
UNT models measure only 28 mm, while UNR models measure only 18 mm, making them the most compact sensors available on the market. Since the active sensing face is located at the end of the sensor, the piston can be detected up to the end, even on compact short stroke cylinders.

Visible LED
TURCK Magneto-Resistive Sensors
A bright LED indicates the current switching status, and is visible from any position.

TURCK Magneto-Resistive Sensors
Magneto-resistive technology enables the sensor to detect the exact position of the magnet, while avoiding multiple switching points. It also exceeds IEC standards EN60947-5-2 and EN61000-4-6, making it immune to high levels of EMC.

Optional accessories
TURCK Magneto-Resistive Sensors
A large range of accessories, such as clips for cable routing, are available for mounting, adjustment and installation.