Tag Archives: photoelectric sensor

Basic Color Sensor Overview

In the past, color sensors emitted light using red, green and blue LEDs’. The sensors were then able to distinguish colors using the RGB components of the reflected light back to the sensor’s receiver. As technology has progressed true color … Continue reading

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Level Detection Basics – Where to begin?

Initially I started to write this blog to compare photoelectric sensors to ultrasonic sensors for level detection. This came to mind after traveling around and visiting customers that had some very interesting applications. However, as I started to shed some … Continue reading

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Photoelectric Basics – Distance Measuring

Some photoelectric applications require not only knowing if the object is present or not but exactly where the object is while providing a continuous or dynamic value representative of the objects location.  For instance, if a robot is stacking a … Continue reading

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Photoelectric Output Operate Modes and Output Types

Photoelectric sensors are used in a wide variety of applications that you encounter every day. They are offered in numerous housing styles that provide long distance non-contact detection of many different types of objects or targets. Being used in such … Continue reading

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Detecting Small Bubbles? Consider These Factors First

Bubble or air-in-line detection is a common lab automation application. In these types of applications it’s important to know whether or not liquid is flowing through a line to ensure safe and proper function in liquid-handling processes.  As these processes … Continue reading

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Precision Optical Measurement and Detection

In applications that require precise measurement and detection of one or more objects, what type of sensor should one use? If objects that are very small and far apart need to be detected, what type of sensor provides high resolution over … Continue reading

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The Other Retro-Reflective Sensors

Most of the time when we think of Retro-Reflective sensors the first thing that comes to mind is a photoelectric sensor. Photoelectric offerings use a reflector to reflect light from the internally mounted emitter and receiver. Retro photoelectric sensors come … Continue reading

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Back to the Basics – Which light is the right light?

The emitters in photoelectric sensors give off a light that is received by a separate receiver, reflected back to a receiver by a reflector, or reflected back by the object itself. Back in the good ‘ol days, the light source was … Continue reading

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I’ve got the Feeder Bowl Blues (not to be confused with “Feed Bag Blues”)

Honestly, every day we run into one of the most commonly seen and vital categories of automation equipment imaginable on the factory floor – the good old automation stalwart servant, the feeder bowl. These devices are imperative to successful automated assembly … Continue reading

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Choose The Flavor Of Photo Eye: Light-On Or Dark-On?

Sometimes the things that always seem the simplest can really be the most confusing. In the world of the Photo sensor, the principle of “light-on” vs. “dark-on” is won of those things. So what am I talking about you may say? Well let’s look at both and see if I can help define these concepts.
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