Sensors & Transducers


Ultrasonic sensor offers microprocessor programming flexibility

July 2003 Sensors & Transducers

Banner Engineering is offering its new S18U Series compact ultrasonic sensors featuring an advanced microprocessor design, pushbutton programming and bright diagnostic status LEDs located directly on the sensor housing. "Users are looking for two things in a compact ultrasonic sensor: quick set-ups and consistent sensor-to-sensor performance. With its micro-based electronics and pushbutton programming, the S18U sets up in seconds. Additionally, each S18U's ultrasonic beam is individually adjusted at the factory to reduce the effects of transducer variation resulting in high repeatable accuracy and very predictable switchpoints," said Mike Dean, product director for Banner's measurement and inspection products.

Designed for high accuracy at programmable ranges from 30 to 300 mm, the S18U provides reliable sensing of opaque or translucent objects and is not affected by colour - making it suitable for applications involving clear web detection or shiny object detection. Another significant feature is programmable background suppression that allows for detection of an object within a distinct sensing field while ignoring objects beyond the far setpoint. User-defined programming of the sensor's analog or discrete outputs (dependent on model) offers the ultimate flexibility for adapting the sensor to a wide variety of unique sensing applications. A temperature compensation feature allows the sensor to self-correct for speed of sound changes due to temperature shifts in the sensing environment while maintaining sensing accuracy.

Available in a straight or right-angle housing, the compact 18 mm barrel design offers numerous mounting options. "With its small size and highly visible LEDs, the S18U is an excellent choice for applications such as bottling or small container liquid level control where accurate sensing is required and available space is limited," Dean added.

Constructed of durable ABS plastic with a completely sealed, leakproof design rated IEC IP67 and NEMA 6P, the tough and tiny sensors tolerate vibration, mechanical shock and washdown. Internal circuitry guards against false pulse on power-up, continuous overload, and short circuit of outputs.



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