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The Quick-And-Dirty Guide To Troubleshooting Photoelectric Sensors

You have a photoelectric sensor of some type. It’s not working. What’s the quickest way to fix it? Start right here.

Identify the Sensor Type
There are three basic kinds of photoelectric sensor:

  • Through-beam sensors have an emitter and a receiver, and trigger whenever the beam between the two is interrupted. They offer the longest operational range.
  • Retro-reflective sensors have an emitter and receiver in a single unit, and require a reflector to be placed in such a way that the beam is bounced back into the unit. They’re the most common type of photoelectric sensor.
  • Diffuse sensors rely on the small percentage of light that reflects back into the sensor from a nearby object to trigger; they have the shortest detection range of all, but are also the least expensive and the easiest to install.

Identify the Problem
There are a few basic kinds of problem you can be troubleshooting. In short, is the sensor going off when there’s nothing to sense, or is it not going off when there is something to detect?

Clean the Apparatus
If it’s the first case, and the sensor is registering false positives, start by cleaning the entire sensor. Clean the beam output, the receiver, and if present, the reflector. A soft clean dry cloth and, if the sensor is visibly dirty, a non-abrasive, non-corrosive cleanser are the best tools. After cleaning the sensor parts thoroughly, test the sensor to see if it’s working.

Re-align the Parts
If they’re still not working, carefully re-align the entire system. This requires a string and two people (exception: a diffuse scanner works at such a small range that it should be visually obvious of it’s misaligned.) Have one person stand at one end of the arrangement and another stand at the reflector/receiver, and pull a string taut between the two. If the photo eyes are misaligned, line them up with the string, first in the left-right dimension and then in the up-down dimension. Once they are roughly aligned, proceed to make minor adjustments to the emitter only until the sensor is functioning properly.

Check the Inputs
The inputs for a photoelectric detector are electrical. Check the sensors’ data sheets and ensure that they are receiving the correct voltage, amperage, and AC or DC current. You will need a multimeter or other measuring tool to ensure that the correct amounts are making it all the way through the circuit to the emitter and receiver.

Contact the Dealer
If all else fails, contact the dealer who sold you the sensors — they can talk you through other more complex procedures that you can attempt including altering the gain adjustment and narrowing the beam.

Important Facts About Conveyor Belt Cleaners

There have been so many tools and machines invented to make people’s lives easier and so much better. The hydraulic pump and vacuum pump are a few examples. Another brilliant invention has also been achieved in conveyor belt cleaners. Cleaning and sanitizing conveyor belts can be complicated. However, a good conveyor belt cleaner can anitizes, cleans and dries conveyor belts without the use of chemicals. It uses a breakthrough industrial solution system that involves a portable sanitizing system and deep steam cleaning for conveyors even during production. It leaves conveyor belts free from contaminants and microorganisms. It is a 100 % organic, completely green technology.  


Conveyor Belt Cleaning System Features

This conveyor belt cleaner is easier to use and much faster than the traditional conveyor belt cleaning systems. It also works efficiently on most conveyor styles and sizes. And, since it’s easy to install, the cleaning process is quick and easy.  It is designed to give 24/7 sanitizing and cleaning power and cut water use by producing 94% of dry stream, which requires only 15 liters of water per hour. The heat it produces is enough to release soils and kill germs instantly. The Conveyor Belt Cleaning System uses a electronic control box to regulate the steam, and it can be mounted on the steam generator or the conveyor.
How It Works

Who would have thought that sanitizing can be possible in a responsible and environmentally friendly way?  With only 15 liters or water per hour, heated under pressure to maximum temperature until it turns to dry steam vapor, the conveyor belt cleaner becomes a very powerful cleaning machine. In fact, this is the only technology out there, that can powerfully penetrate a stainless steel’s micropores. Dry steam vapor particles penetrate all cracks and crevices to remove stubborn dirt, grease, and kill bacteria and microorganisms at once. This cleaning system leaves belt conveyors clean, sanitized and dry while they are operating or not. What’s more is that, it is a patented technology that cleans meshes, metals, plastics, or flat industrial conveyor belts, such as pharmaceuticals and food processing.

Conveyor belts used for these purposes require hygienic cleaning. In conclusion, the Conveyor Belt Cleaning System has several major advantages. It cleans and sanitizes in an organic way, without using harmful chemicals. It also saves costs on water usage and prevents loss of profit from labor shutdown since it can clean the conveyor belt even while it’s running.