Vectors and 3D Models
Local Search - Business
Weather Information
Get the App for Smartphones and Tablets

Go Back


WhmSoft Free Articles Directory
Free Articles for Reprint
Free Articles to Publish
Free Articles for Newsletters
Videos to Watch


Page Generation Date and Time:
03/29/2024 11:20:47

 
Free the Animation VR / AR
Play to reveal 3D images and 3D models!
Demonstration A-Frame / Multiplayer
Android app on Google Play
 
vlrPhone / vlrFilter / vlrMemos
Project of very low consumption, radiation and bitrate softphones / Multifunction Audio Filter with Remote Control / App to measure the quality of the voice!



 
 
Alexa Data
 

Go To Articles Directory Home Page

To get the current article, - See Below (at the bottom of the page) -.
For top news titles, see below.
Web sites and videos listed in this page are frequently updated.
If you find that this page is useful (quality of web sites, images and videos, ...), you can add it to your favorites.
Bookmark Page !

Tell a Friend:



With your mobile phone (WAP / I-Mode / iPhone / PDA), for free:
The Top News - http://www.whmsoft.net/services/wap/news.php
The Daily Files - http://www.whmsoft.net/services/wap/get.php
All the Directory Files - http://www.whmsoft.net/services/wap/choose.php

Web version of feeds:
Podcast Music - http://www.whmsoft.net/services/web/wpodcast.php
Daily Files - http://www.whmsoft.net/services/web/wget.php

You can play the Guitar Drum Revolution game (flash game) by following the link below:
Play Guitar Drum Revolution Game


You can play free online games (flash games) by following the link below:
Free Online Games

Play the samples below:
Super FighterDefenderZelda Valentine QuesPoker Toon8Arctic Quest
Super FighterDefenderZelda Valentine QuesPoker Toon8Arctic Quest

You can view the people (celebrities) news and the front page news (with videos, images and constant updates) by following the link below:
View Recent News
or by visiting the WhmSoft Service blog:
News Photos Slideshows


Article Keyword Videos to Watch
Business
Click on the image to start the video.



Related Topics
Images - Links - Articles

Franckfort


Related Images



Article Category Videos to Watch
Business
Go to the Videos Pages


What if there's no power - how do I control my pneumatic circuit?

With the advent of the small PLC's (programmable logic controllers), the Logo or the Pico to name just a couple, controlling pneumatic circuits can be achieved with high reliability, low complexity, and at a relatively low cost with one of the currently available, easy to program controllers.

That's all well and good for the vast majority of applications that occur in a plant environment that offers electricity. But what if yours doesn't? Or, what if you would prefer to have a non-electrical compressed air circuit, one that is, perhaps, located in an explosive or fire hazard location?

Years ago, there were no options but using air logic to control compressed air applications. For more modern applications that may need to operate without electricity, air logic still offers a viable alternative.

There are commercially and readily available air logic elements that will help you design the air-only pneumatic circuit.

OR Gate

This device will allow an output control signal when either of two incoming air signals are present. The output air signal is continuous as long as there is an incoming air signal. This is useful when you wish to sequence a pneumatic operation, but don't want it to occur until another operation is complete.

AND Gate

This device will allow an output signal only when there are two input air signals received. The output air signal is continuous as long as there are two incoming air signals. This is useful when you wish to sequence a pneumatic operation, but don't want it to occur until other operations are complete.

NOT Gate

Sends an output air signal continuously when the incoming air signal is absent. This type of device is often used to ensure that a sequence cannot take place until another action is complete.

PULSE

This device will allow a momentary output signal to trigger a sequence operation, and the output signal will drop after it "times out". This is useful for simplifying control circuitry eliminating the potential for conflicting control air if the pneumatic circuit hasn't been designed properly.

TIMER

These devices can either generate an outgoing signal for a specific period of time or, delay an outgoing signal for a specific period of time when either receives in input air signal.

INDICATOR

These devices are used when there is a need to have a visual indicator that there is compressed air present. Some might change colour, others might have an indicator pin that pops up to show air is there. Of course, a pressure gauge would do the same thing, but perhaps it might be beneficial to be able to see that there is air present from a distance?

POSITION SENSORS

By having an object interrupt an air flow, or have the air flow within the sensor uninterrupted, will produce an outgoing air signal.


These are just a few of the many other air logic components and devices commerically available. With these items, air logic can be used to build quite complex air control circuits.

Caution: the compressing of air generates a great deal of water, and air / water borne contamination in the air lines to the plant which can be a real problem for downstream air components.

Air logic devices are just such downstream air components. It is critical for their reliable operation to have the air supply to these sensitive control elements clean and dry. Failure to provide air of sufficient quality will ensure that the air logic control circuit will not function to design or expectation.


About the Author: Bill Wade is a former President, Marketing Manager and Sales Manager of a number of companies that use and sell compressed air related equipment and supplies. He currently represents a select group of companies and writes about air at http://www.about-air-compressors.com .




Recommended Web Site(s):

Free the Animation Game

Recommended WhmSoft Web Sites, Feeds and WAP Address:

WhmSoft Software Home Page - Software
WhmSoft Services Login Page - Music and Images
WhmSoft Moblog Home Page - Blog - Photo Gallery
WhmSoft Free Online Games Home Page - Flash Games
WhmSoft Services RSS Feed - Daily Music, Image and 3D Flash Animation
Classical Music with Drum RSS Feed - MIDI and MP3 Files
Classical Music with Drum Podcast Feed - MP3 and MP3 Files
WAP / I-Mode / PDAs - Daily Music, Image and Flash Animation

Home Pages:

WhmSoft Free Articles for Reprint Home Page
WhmSoft Services Home Page - Music and Images
Copyright (C) 2006-2024 WhmSoft - All Rights Reserved.