Ultrasonic Sensors Product Highlights
Ultrasonic sensors operate according to the bat principle: They emit short sound pulses and measure the runtime of the echo. They are insensitive to contamination and environmental influences. Ultrasonic sensors detect objects or liquids regardless of dirt, dust, mist or ambient light

Ultrasonic Distance Sensors for Large Ranges
UMS ultrasonic sensors are particularly suitable for fill level monitoring of liquids, bulk solids and transparent objects. They reliably detect objects regardless of material, unit condition, color or transparency – as reflex sensors even at a distance of up to 6,000 mm.

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Portfolio
Ultrasonic sensors are available in different variants depending on the intended use. Sensors with variable working ranges, switching frequencies, interfaces, protection or connection types are available as cubic or metric formats, through to fork shapes. This page provides a comprehensive overview of the entire ultrasonic portfolio.

Performance in a New Combination: The U1RT Ultrasonic Distance Sensors
Low installation depth and easy integration of the sensor via an M18 thread or the drill holes on the housing – the advantages of the established R format have been appreciated for years in the field of photoelectronic sensors. wenglor’s ultrasonic distance sensors from the new U1RT series combine this format with the tried-and-tested ultrasonic technology of the U1KT and UMD product series, thus setting new standards in terms of range and integration options. Thanks to IO-Link 1.1 and NFC interface, the sensor offers flexible setting options and data storage. Combining two successful products and installing these technologies in an established sensor housing design results in this new generation of U1RT ultrasonic reflex sensors. In through beam mode, it operates reliably up to 2,000 mm, in reflex operation up to 1,200 mm. In addition to the application range at temperatures between –30 and +60 °C, it is also possible to use the sensors in synchronous mode. Two independent switching outputs enable the measurement of minimum and maximum levels. All-round visible LED indicators and high IP67/IP68 degree of protection are just two of the many reasons why this format is so successful. Flexibility and Smart Communication The high flexibility in use is made possible not only by the low installation depth, but also by the availability of PNP and NPN variants. “But the new U1RT series sensors can do much more”, explains wenglor product manager Maria Boos. “The integrated IO-Link 1.1 interface with COM3 standard enables fast and secure communication with controllers. Thanks to the Smart Sensor Profile, the product can be easily integrated into IO-Link in a standardized way and regularly sends status messages.” The integrated NFC interface even allows the sensors to be configured without power and wirelessly via the wenglorApp – which is ideal for applications with high quantities and saves a lot of time. Speaking of saving time: The sensor can be adjusted directly via the teach-in key with just a few buttons. Product manager Maria Boos is certain: “The long ranges combined with the tried-and-tested R format and smart integration options make the U1RT series a real all-rounder for the industry.” Versatile Portfolio for Every Application In addition to extremely compact formats such as the U1KT housing (32 × 16 × 12 mm) and the R format (56.5 × 26 × 24 mm), the ultrasonic sensors product category also includes the metric designs in M18 and M30 format (UMD and UMF) made of stainless steel as well as the cuboidal UMS sensors (81 × 55 × 30/47 mm) for large working distances of up to 6,000 mm and the special U1H format as a fork sensor. Almost any application can be achieved with a sensor in this category. Ultrasonic Technology Ultrasonic sensors are ideal for contactless detection of transparent, glossy and dark objects, reflective surfaces and materials of all kinds – whether solid or liquid, rough or smooth, porous or translucent. Environmental conditions such as dust, steam, dirt or the influence of ambient light do not disturb them. “By emitting and receiving pulsed ultrasonic waves, the sensors, like bats, use the time it takes for the sound to be reflected by the object to determine its distance”, Boos continues. “Level measurement, stack height checks, checking slack in roller material or even checking for the presence of e.g. cans or PET bottles in automatic return machines are just a few applications that can be solved with this technology.” The Highlights at a Glance Long range up to 1,200 mm in reflex mode Long range up to 2,000 mm in through beam mode Two independent switching outputs with programmable error output Compact R format (56.5 × 26 × 24 mm) IO-Link 1.1 interface with COM3 standard NFC interface Reflex, through beam or synchronous mode possible PNP/NPN variants Temperature range –30 °C to +60 °C IP67/IP68 degree of protection

P1PM Reflex Light Barrier Expands PNG//smart Portfolio
The wenglor sensoric group is expanding its PNG//smart portfolio in the field of optoelectronics with the P1PM reflex light barrier. The P1PM reflex light barriers work based on an innovative detection method that records back-scattered light intensity and distance. The sensors use red LED light to detect objects contactlessly, regardless of color, surface finish and shape. They are taught to any reference background via teach-in. Reliable detection of glossy, uneven and even semi-transparent objects is therefore achieved – without an additional reflector.  The P1PM reflex light barriers, which are available in a total of four variants, are particularly impressive due to their versatile applications. Thanks to their combined detection principle, the reflex light barriers determine the intensity of the backscattered light as well as the distance of the light spot to a previously taught-in reference background. As a result, distances and surface finishes are reliably detected up to one meter, regardless of color, shape and surface finish. Detection without a reflector offers further advantages: The sensor can be mounted in places where there is no space for a reflector. Reflector-free installation also enables considerable time and cost savings. This avoids system downtimes due to dirty or defective reflectors.  High Process Reliability in Different Working Environments The P1PM reflex light barriers impress with two separate teach-in modes: They can be taught on both a static and a moving reference background. Parameterization via IO-Link allows both operating modes of the PNG//smart reflex light barriers to be set. This means that the sensor can be adapted easily and individually to the respective application. The reflex light barriers detect objects even if they are located directly in front of the sensor optics, as they work without a blind spot. The P1PM reflex light barriers easily master challenging circumstances such as a dirty background or strong vibrations. This is because the built-in dynamic readjustment also compensates for gradual changes in the background without the need for a new teach-in.  The Highlights at a Glance: Non-contact object detection using LED red light, regardless of the color, shape and surface finish of the object without an additional reflector Reliable detection of glossy, uneven and even semi-transparent objects  Innovative detection method combines distance and intensity detection Four variants with two separate operating modes: Teach-in on static and moving reference background  Dynamic readjustment for reliable detection  IO-Link 1.1 for simple parameterization and integration No blind spot

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Operational Principle and Technology of an Ultrasonic Sensor
Ultrasonic sensors measure distances in a contactless manner by using ultrasonic wave reflection. They detect transparent, dark, glossy or complex objects as well as liquids. They can detect, position, test for presence and perform distance measurements regardless of contamination such as dust, mist, vapor or ambient light.

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