09-05-2024 | Leuze | Test & Measurement
The new Leuze ultrasonic sensors of the 420B and 412B series can be employed for many different applications thanks to an adjustable sound cone and a small dead zone.
The new ultrasonic sensors are offered with adjustable sound cone and switching (HTU) or measuring (DMU) sensors, enabling extremely flexible application. The sound cone can be set via an IO-Link interface to the three ranges 'narrow', 'medium' or 'wide' and, therefore, adapted to the respective application. As a result, the ultrasonic sensors operate with maximum precision: They can detect reliably when optical sensors are pushed to their limits. They also detect glossy, reflective, very dark or transparent surfaces and liquids without problem. The 420B series includes ultrasonic sensors in compact cubic plastic housings. It replaces the 420 series. With the new devices, users benefit from smaller dead zones with the same or a higher sensor operating range. The 412B series complements the range of cylindrical sensors in M12 housing with devices offering IO-Link and analog output.
The 420B series ultrasonic sensors have an adjustable sound cone. Depending on the application, a narrow, medium, or wide sound cone can be chosen. This enables, for example, fill levels to be monitored through differently-sized container openings.
The HTU420B ultrasonic sensors in the red housing are ideal for challenging detection tasks thanks to their adjustable sound cone, IO-Link interface and two switching outputs. For example, two fill levels can be detected, or two positions can be monitored simultaneously. The adjustable sound cone turns the sensors into flexible all-rounders. A narrow sound cone, for example, is suited for detecting a fill level through small container openings. In its wide setting, the sound cone captures larger areas – ideal for bulk material or diffusely reflective objects with complex surface or structure. Practical: An interruption filter detects brief changes in measurement within a certain interval caused by interfering objects (e.g. an agitator). The sensor suppresses these interfering signals via the IO-Link interface, ensuring a seamless production process.
Moreover, system operators can use the ultrasonic distance sensors to measure distances. The devices have an analog output (either current or voltage), an IO-Link interface, and an adjustable sound cone.
The DMU420B ultrasonic distance sensors continuously deliver an analog output signal (current or voltage) to the machine control. This enables system operators to monitor, e.g. roll diameters, to ensure that the rolls are changed promptly. The glossy surface is detected reliably.
The Sensor People from the company also offers the HTU420B ultrasonic sensors in a standard design with black plastic housing. They are an economical solution with one switching output (push-pull) and are appropriate for simple detection tasks. Both variants are offered in operating ranges from 10mm to 250mm, 15mm to 500mm, and 20mm to 1000mm. The HTU412B series has an operating range of 15mm to 500mm.
The cubic sensors measuring 20.5mm x 41mm x 15mm are extremely compact. The cylindrical sensors of the HTU412B series are also just 50mm long. They are, therefore, particularly suited for applications in constrained spaces. All types can be parameterized quickly: Easy setup and operation are possible using the teach button, via the teach input, or via IO-Link.
