In industrial applications, ultrasonic sensors are characterized by their reliability and outstanding versatility. Ultrasonic sensors can be used to solve even the most complex tasks involving object detection or level measurement with millimeter precision, because their measuring method works reliably under almost all conditions.
No other measuring method can be successfully put to use on such a wide scale and in so many different applications. The devices are extremely robust, making them suitable for even the toughest conditions. The sensor surface cleans itself through vibration, and that is not the only reason why the sensor is insensitive to dirt. The physical principle—the propagation of sound—works, with a few exceptions, in practically any environment.
The measuring method employed by ultrasonic sensors has been viewed as an excessively complex technology, and only used as a “last resort” ... as a solution for particularly difficult applications. Those times have long since passed!
Ultrasonic sensors have proven their reliability and endurance in virtually all industrial sectors.
Diffuse and Retroreflective Mode Sensors
Ultrasonic sensors are most commonly used in the diffuse mode. A single ultrasonic transducer is used https://www.pepperl-fuchs.com/southafrica/en/classid_186.htmas both emitter and receiver and is typically contained in the same housing as the evaluation electronics.https://www.pepperl-fuchs.com/southafrica/en/classid_186.htm
To reliably detect difficult objects, the majority of our diffuse mode sensors can be converted to retroreflective operation via software parameterization. Some ultrasonic sensors are supplied as retroreflective sensors from the outset.
Ultrasonic thru-beam sensors feature an extremely powerful acoustic beam. They offer a large detection range within compact housing dimensions. Unlike diffuse and retroreflective models, thttps://www.pepperl-fuchs.com/southafrica/en/classid_184.htmheshttps://www.pepperl-fuchs.com/southafrica/en/classid_184.htme sensors do not continuously switch between transmission and reception modes or wait for an echo signal to arrive. Thus, their response time is considerably faster, resulting in very high switching frequencies.https://www.pepperl-fuchs.com/southafrica/en/classid_184.htm
