Siemens has developed a new generation of its sonar proximity switches Simatic PXS. The new sensors of the compact series in M30 design have a reduced blind zone and are shorter than models of the previous generation. These improvements make for better detection of objects at close range and reduce the space requirements of the components.
The space requirement of a sonar proximity switch in a machine or plant is mainly determined by its blind zone. The switch must be installed at a location that is set back by the length of the blind zone from the detection range to ensure reliable detection of the close-up range. This so-called dead space is reduced by more than 50% for the latest generation of Simatic PXS sonar proximity switches. The extremely narrow sonic lobe and the improved noise suppression make for object detection even under difficult environmental conditions and thus increases machine availability.
The sensors are available for four different detection ranges up to six metres. The K1 version has one switching output; the K2 version has two. K3 is available in several versions: with one switching and one analog output, with one IO-Link channel or Atex certification for operation in Ex-Zone 2/22. Versions with rotary head or recessed converter are available for K2 and K3 sensors.
Parameter setting of the sonar proximity switches takes place either through simple setting of the potentiometer on the device itself or more conveniently with the parameter-setting tool.
The new Simatic-PXS sonic proximity switches can detect all objects that reflect ultrasonic waves in applications ranging from measurement of filling and stacking levels, height detection to distance measurements.
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