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Presence Check of Steel Coils with Ultrasonic Distance Sensors
Presence Check of Steel Coils with Ultrasonic Distance Sensors
In the metalworking industry, steel coils are unwound and processed continuously. To ensure a continuous material and process flow, an ultrasonic distance sensor is mounted above the rollers. This reliably measures the distance between the sensor and the material and thus determines the coil size and the remaining quantity on the roll. Adverse ambient conditions such as dust or oil mist, ambient light and dark or shiny surfaces do not affect the measurement data accuracy.
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Fill Level Monitoring of Waste Containers via Ultrasonic Distance Sensors
Fill Level Monitoring of Waste Containers via Ultrasonic Distance Sensors
Recycling plants collect various waste materials, such as paper, plastic, glass and metal, in large containers. These containers must be emptied quickly once full, as failing to do so quickly enough can lead to a stoppage of production. Ultrasonic distance sensors are mounted above the tanks for continuous level monitoring. Their large working range and robust housing make them ideal for use in difficult conditions such as high dust levels, large temperature differences or changing material types.
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Distance Check on Vehicle Test Bench with Ultrasonic Distance Sensor
Distance Check on Vehicle Test Bench with Ultrasonic Distance Sensor
In vehicle test benches, it is important that cars driving into the bench stand securely in the acceleration roller holder. For this purpose, an ultrasonic distance sensor is installed at the front of the car bumper which measures the distance. The control system knows the vehicle type and, in combination with the measured distance value, can determine the required position of the car between the rollers. The ultrasonic sensor reliably detects every car regardless of color, paint quality or shape.
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Fill-level Measurement of Potato Chip Rejects with Ultrasonic Distance Sensor
Fill-level Measurement of Potato Chip Rejects with Ultrasonic Distance Sensor
Leftovers are created during the production of potato chips. These rejects are transported to a waste container along a feed screw. There are four flaps to ensure that the container is filled evenly. Ultrasonic distance sensors with analog output are installed next to the flaps and are used to check the fill level of the container. When the mound of rejected potato chip reaches the maximum height, the sensor switches and the flap is closed. The next flap then opens. Dust and damp surfaces have no impact on the switching behavior of the sensors in the M30 housing.
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Film Tear and Fill Level Monitoring in Packaging Systems with Ultrasonic Distance Sensor
Film Tear and Fill Level Monitoring in Packaging Systems with Ultrasonic Distance Sensor
Colorful, glossy or transparent films are used in packaging plants to ensure that products are airtight and securely packed. These are conveyed by rolls and attached around the objects. Ultrasonic distance sensors monitor the roll diameter to ensure continuous material flow. Two independent switching outputs signal when there is little film left on the roll and when the roll is empty and needs to be replaced. In addition, the sensor checks whether the film is open or torn.
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Stack Height Monitoring on Packaging Magazines with Ultrasonic Distance Sensor
Stack Height Monitoring on Packaging Magazines with Ultrasonic Distance Sensor
Different colored cartons in packaging systems are stacked on top of each other in magazines before being unfolded and filled in downstream processes. In order to ensure a continuous material supply, the stacking height of the magazine is checked by an ultrasonic distance sensor. This sensor records the measured values either continuously via IO-Link or with two switching points so that the magazine can be refilled in good time. Thanks to the wide sonic cone, recesses, gaps or punches have no influence on object sensing.
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Level Control of Cream in a Mixer with Ultrasonic Distance Sensor
Level Control of Cream in a Mixer with Ultrasonic Distance Sensor
In the pharmaceutical and cosmetics industries, ingredients of ointments or creams are mixed together in fully automated mixers. In order to perform the mixing process correctly and to achieve the correct consistency, the minimum and maximum fill levels must be continuously monitored. For this purpose, an ultrasonic distance sensor is installed above the mixer, which reliably detects the material regardless of color, condition or transparency. The fill level can be checked either via an analog measured value or by defining individual switching thresholds via IO-Link.
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Presence Check of Wooden Panels in Furniture Production with Ultrasonic Distance Sensors
Presence Check of Wooden Panels in Furniture Production with Ultrasonic Distance Sensors
In the furniture industry, wooden panels with different colors, shapes, degrees of gloss and surfaces are conveyed on roller conveyor belts to the next process step. In order to monitor the transport fully automatically, the presence of the panels must be recorded at all times. The slim metric design allows installation beneath the conveyor technology in order to be able to carry out a precise presence check of the wooden panels. Even dust and chips do not influence the results of the ultrasonic sensors.
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Fill-Level Measurement in a Storage Container with Ultrasonic Distance Sensor
Fill-Level Measurement in a Storage Container with Ultrasonic Distance Sensor
In the automotive industry, primer liquids are used as a primer for plastic parts in storage containers at production plants. From these storage containers, the material is automatically supplied to the machines. To ensure the minimum fill level, the level in the containers must be monitored. For this purpose, an ultrasonic distance sensor with stainless steel housing is inside the container, which detects surfaces regardless of structure, color or gloss level. If the fill level falls below a defined level, the sensor switches and the ball valve must be opened for filling.
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Slack Monitoring on Sheet Metal Belts with Ultrasonic Distance Sensor
Slack Monitoring on Sheet Metal Belts with Ultrasonic Distance Sensor
Continuous material supply must be ensured in punching machines. As a material buffer, the supplied metal sheets are guided through the system in the form of a hanging loop. This compensates for the time delay between replenishment and the production processes. To monitor this process, an ultrasonic distance sensor is installed above the loop. It checks whether the sag falls below the minimum value or touches the ground. Ultrasonic measurement is not affected by even very shiny plates and dirt such as oil mist or dust.
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Position Detection of Crates in Spin Dryers via Ultrasonic Sensors
Position Detection of Crates in Spin Dryers via Ultrasonic Sensors
In the food industry, crates are dried in spin dryers after cleaning. In order for the water to drain completely out of the crates, they must be oriented with the bottom facing upwards. The ultrasonic distance sensor mounted above the conveyor line detects the passing boxes regardless of their color, shape or mesh size. If the sensor detects a box that is on the conveyor with the bottom facing downwards, it is rejected in the next step.
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Detection of Baked Goods in Crates via Ultrasonic Sensor
Detection of Baked Goods in Crates via Ultrasonic Sensor
In the food industry, baked goods are transported in boxes through the various process steps. Before cleaning the boxes, it has to be ensured that there is no product left in the boxes. For this purpose, two ultrasonic distance sensors are installed next to each other above the conveyor belt, which emit ultrasonic waves and thus check the contents of the boxes. If baked goods are in a box, it is automatically ejected. The robust sensors in metric stainless steel housing with IP67 degree of protection reliably detect objects regardless of shape and color.
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Websites
Sensors
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Washdown Sensors
The cleaning-resistant sensors are ideal for use in spraying applications in the food, beverage and packaging industries. Neither spraying water nor significant temperature changes impair the function of the robust wenglor sensors.
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weCat3D Sensor Technology
The 2D/3D profile sensors in the weCat3D series deliver millions of measuring points per second with micrometer-accurate resolution in Z. Available in two performance classes, measuring ranges from a few millimeters to over one meter are possible and output rates of several thousand hertz are achieved.
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PNG//smart | Reflex Sensors
Reflex sensors are well suited for applications in which objects must be detected without a background. Note that: Bright objects reflect more light than dark objects, and can thus be recognized from greater distances. This means that presence or stack height checks can be conducted or quantities detected.
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PNG//smart | Retro-Reflex Sensors
Retro-reflex sensors work reliably at high switching frequencies and at great distances. This makes them the perfect solution for feed and presence checks on wide feed belts. Objects with reflective or glossy surfaces are reliably detected.  
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PNG//smart – Photoelectronic Sensors
… stands for a new age of smart photoelectronic sensors. Intelligent, networked and learning sensory organs in automated industries are the key component of the future production sector all over the world.
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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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PNG//smart | Retro-Reflex Sensors for Transparent Objects
Where conventional retro-reflex sensors reach their limits, the retro-reflex sensors for transparent objects ensure that extremely shiny objects like glass, PET bottles, trays or film can be detected. By using single-lens optics without a blind spot, retro-reflex sensors can detect objects through small openings like holes or gaps.
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Ultrasonic Sensors for Process Monitoring
Ultrasonic sensors from the UMF product family are characterized by their reliable performance and robust design, making them ideal for use in automation technology, conveyor technology and the packaging industry.
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Luminescence Sensor Technology
Luminescence sensors detect luminescent markings by shining UV light on an object – regardless of patterns, colors or surface properties. The luminophores contained in the material are activated by the UV light and reflect visible light. If the sensor detects the light that has been previously taught in, it switches the output.
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Luminescence Sensors Portfolio
Luminescence sensors detect luminescent markings on packaging and objects and illuminate them by shining UV light on them. This ensures that luminescence marks are detected even with a minor color and contrast difference. 
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Inductive Sensor Technology
Inductive sensors are ideal for contactless detection and position monitoring of metallic objects. They detect metallic parts despite contamination such as dust and moisture and are insensitive to vibrations.
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Downloads
New Products: Retro-Reflex Sensors with Light Band
New Products: Retro-Reflex Sensors with Light Band (450 KB)
We have summarized the most important new product features and highlights of the retro-reflex sensor with light band for a clearer overview.
Fluid Sensors Brochure
Fluid Sensors Brochure (761 KB)
Flexibility, precision and easy configuration: wenglor’s portfolio offers a wide selection of high-quality fluid sensors with state-of-the-art comm...
Press Picture: Pressure Sensor weFlux²micro
Press Picture: Pressure Sensor weFlux²micro (166 KB)
New Products: Pressure Sensor weFlux²micro
New Products: Pressure Sensor weFlux²micro (465 KB)
This document summarizes the most important new products and highlights of the weFlux²micro pressure sensor for a clearer overview. 
New Products: Ultrasonic Sensors U1RT
New Products: Ultrasonic Sensors U1RT (468 KB)
We have summarized the most important new product features and highlights of the U1RT ultrasonic sensors for a clearer overview.
Color Sensors Product Flyer
Color Sensors Product Flyer (7 MB)
This document contains the product flyer for color sensors.
Retro-Reflex Sensors with Light Band Product Flyer
Retro-Reflex Sensors with Light Band Product Flyer (3 MB)
This document contains the product flyer for the retro-reflex sensors with light band.
Press Picture: Luminescence Reflex Sensor P1PA001
Press Picture: Luminescence Reflex Sensor P1PA001 (281 KB)
New Products: Luminescence Reflex Sensor P1PA001
New Products: Luminescence Reflex Sensor P1PA001 (438 KB)
New Products: U1KT Ultrasonic Sensors
New Products: U1KT Ultrasonic Sensors (283 KB)
Press Picture: P1PW Contrast Sensors
Press Picture: P1PW Contrast Sensors (239 KB)
New Products: Ultrasonic Sensors U18T
New Products: Ultrasonic Sensors U18T (344 KB)
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Technical Glossary
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See also: Code 2 of 5 Interleaved
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2-Wire Devices
At 2-wire devices, load is connected in series to supply power.
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6-Band Multispectral Sensor
In a 6-bank multispectral sensor, the spectrum of visible light is broken down into six ranges including red, orange, yellow, green, blue and violet (ROYGBV color space). This makes it possible to detect extremely fine color nuances thanks to spectral measurement.
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AC Sensor
An AC sensor can be operated with alternating current.
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Air Pressure Sensors
Air pressure sensors convert the mechanical pressure applied to the sensor membrane into an electrical signal. This signal can be output via a switching output or analog output.
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Code 2/5 3 Bar Matrix
Code 2/5 3 bar matrix, also called code 2/5 matrix, is a purely numeric barcode (numerals 0 through 9) which represents each individual character through the use of five elements (three bars and 2 spaces (space)). This barcode is a discrete 1D code (discrete barcode). The advantage of high information density is offset by minimal tolerance.
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Code 2/5 5 Bar Industrial
Code 2/5 5 bar industrial, also called industry barcode, is a numeric barcode (numeric characters 0 through 9) which consists of two wide bars and three narrow bars. The spaces (space) used in this 1D code do not contain any information. For this reason, the 1D code demonstrates a large printing error tolerance (15%), and can thus be printed with very simple printing technologies (tolerance). The disadvantages of this barcode include minimal information density (numeric data only) and a space requirement of approximately 4.2 mm per character (with a module width of 0.3 mm and a wide-to-narrow ratio of 1:3). Beyond this, no standard is available for the code.
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Code 2/5 Interleaved
Code 2/5 interleaved is a numeric barcode (numeric characters 0 through 9) consisting of two wide and three narrow bars and spaces (space), resulting in the designation “2/5”. The term “interleaved” refers to the overlapping representation of the characters. The code always consists of an even number of characters and can be read bidirectionally. The interleaved 2 of 5 code demonstrates high information density. The disadvantages of this barcode include a small number of usable characters and a tight tolerance, which results from the fact that the spaces also contain information.
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DC Sensor
A DC sensor can be operated with direct current.
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DIN EN 1672-2
DIN EN 1672-2 is a German standard for: “Food processing machinery – Basic concepts – Part 2: Hygiene requirements”. This standard is intended to supplement generally valid, essential health and safety requirements specified in the EC machine directive with detailed stipulations for food processing machines in order to simplify the substantiation of adherence with these basic requirements. The standard is based upon EHEDG guidelines.
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Direction Setting
The direction setting is a function for specifying and checking the order in which the muting sensors are activated and deactivated. This increases safety during muting. If an object passes through the safety field in a direction other than the one defined, the muting cycle is not initiated. This function is only available for four-sensor linear muting.
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Fiber-Optic Cable Sensor
Fiber-optic cable sensors are prepared for the application with plastic fiber-optic cables or glass fiber-optic cables. They can be run both in reflex sensor or through-beam mode.
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Product Comparison
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