Banner Engineering is offering the new QT50U series programmable ultrasonic sensors that feature an extended sensing range of up to 8 m. These devices are available in both analog and discrete models, have a minimum sensing range of 200 mm and incorporate advanced microprocessor design for reliable sensing at long distances within a variety of applications.
The microprocessor design of the QT50U also simplifies setup and programming while offering added application flexibility. TEACH programming via two pushbuttons on the sensor or a remote TEACH wire is straightforward and intuitive. The remote wire is also used to disable the pushbuttons to prevent unwanted tampering. An 8-pin DIP switch located on the back of the unit offers added configuration flexibility and enables the sensor's temperature compensation feature, providing constant variations.
"The industry looks for two major capabilities in a long-range ultrasonic: consistency and versatility. Consistent performance within a group of sensors is critical to many applications," says Mike Dean, product director for Banner's Measurement and inspection products division. "Piezoelectric elements within ultrasonic sensors have inherent variation from transducer to transducer - making the compensation abilities of the sensor's electronics that much more important. The electronics of the QT50U take these variations into account and continually correct for consistent performance," Dean added.
"Versatility is also important. The QT50U is the most versatile long-range ultrasonic sensor on the market offering many mounting options, output types and advanced sensor control logic," said Dean.
The QT50U dual-discrete model offers two independent near and far limits per output, making it suitable for applications where distinct high and low media level monitoring is required. It also features a retro-sonic mode in which the sensor is taught a distinct point within its sensing range and will detect any object regardless of shape, size or reflective angle that passes between the sensor face and the taught point.
LED indicators on the sensor provide constant operating status information and the 10 to 30 V d.c. QT50U has a maximum output rating of 60 mA and is protected against reverse polarity and transient overvoltages. Available with a 2 or 9 m shielded 5-conductor PVC jacketed cable or 5-pin Euro-style quick-disconnect or 5-pin Mini-style quick-disconnect.
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