Transducers - The Remarkable Changers Complex control systems all make use of signals that can be easily measured and altered remotely. Automatically operated machines or actuators need to be powered either by electrical motors, pneumatic or hydraulic cylinders. The most common signals sent out from a transducer are electrical current or voltage and pneumatic pressure. These signals are easily translated by controllers. Visual...... Source : Technology Change
Controls - The Building Blocks To Automation As man learns to make machines that no longer rely on animal or human power, he finds that he has to develop some means to manage and control them. Powerful machines let loosed by themselves will create havoc and destruction.Control systems have been developed for machines or processes so as to reduce the chances of failure and to provide the required results.Basically, there are open loop control...... Similar Editorial : Who Controls YOUR Happiness by Dr. David Thomas. | Source : Technology Change
Just The Right Timing How does the engine know when to spray fuel, let in air, compressthe air, and exhaust the spent combustion product?Obviously, there must be a certain timing for these processes tofollow in order for the diesel engine to work.If the fuel were to be injected when the air inside the cylindersis not sufficiently compressed, it will not ignite. Furthermore,if the timing is not correct, some of the...... Similar Editorial : Weight Loss Timing by . | Source : Technology Change
Vital Chemicals For Cooling Towers Cooling towers are used to cool down hot condenser water taken from chillers of air conditioning systems. The cooling effect of cooling towers are attributed to the evaporation of the water when it is blown through by air from the fans.After some time of circulating through the cooling towers, the water becomes more and more concentrated with the dissolved salts in the water. The concentrated...... Similar Editorial : Acne Chemicals Peels by dpoon. | Source : Technology Change
Easy Way To Troubleshoot Pump Problems In any problem analysis, we have to specify the problem, check whether there is any deviation from the normal condition, identify the possible causes, evaluate the possible causes and then confirm the true cause.Pumps or other machinery will give tell tale signs when they are not working properly. An observant pump user will be able to avoid major breakdowns or damage if the problem is corrected...... Similar Editorial : Troubleshoot Before Microwave Repairs by Low Jeremy. | Source : Technology Change
Oil Or Grease Lubrication? A lubricating grease is usually a mixture of 85 to 90 percent mineral oil or synthetic oil together with a thickener. In a majority of all greases, the thickener is a metallic soap. One example is lithium stearate for lithium soap.The function of the thickener, the metallic soap, is to hold the lubricating oil in a semi-liquid state for easier handling.When there is rise in temperature, the oil...... Source : Technology Change
Greasing Bearings - How Much Is Enough? Previously, we have talked about using suitable greases for different applications. Basically, we want to use low temperature greases for low temperature applications and high temperature greases for high temperature applications. The reason is quite simple - we want the grease to form a thin film of lubricating oil between the rubbing surfaces. If we use high temperature grease for normal...... Similar Editorial : Ball Bearings Are Flat by David Leonhardt. | Source : Technology Change
Vacation Break For Electrical Machines Are you overloaded? Have you become a part of the highly stressed modern working environment? You may need a break - a vacation, a change in environment, a change of pace...Similarly, machines can be overloaded too. Those that were designed for a particular system are often pushed to their limits when new requirements emerge.Just like the final straw that breaks the camel's back, electrical...... Similar Editorial : Electrical Vs Hybrid Automobiles by Mervyn Rees. | Source : Technology Strategy
Destruction For Good Destruction! Blow Up! Eliminate! These are not pleasant words!Unfortunately, when it comes to safety we have no other choices. In the electrical industry, fuses are destroyed in order to protect lives or property.Whenever there is a big fault in the power lines, possibly caused by short-circuiting, fuses are very helpful to stop the flow of current.Unlike circuit breakers, fuses have no mechanical...... Similar Editorial : The Good by Sam Vaknin, Ph.D.. | Source : Technology Strategy
Successful Motor Protection Formulae However, with proper heater selection and careful attention to the factors that affect heater performance, the overload relay can work extremely well to protect the motors.Some of these factors that need close attention are: Motor full load currentMotor temperature rise ratingService factorAmbient temperature at the motor and at the protectorMotor locked rotor current ratioStarting timeDuty...... Similar Editorial : Buy Motor Accessories by rhdjapan@yahoo.com. | Source : Technology Strategy
Fire Evacuation Drill With A Difference As ridiculous as it may seem, there was a very good reason for doing this. Firstly, this is a high technology manufacturing facility that manufactures products under extremely clean and dust-free conditions. With clean room facilities standard that goes down to class 10, it is very, very clean indeed. As such it is very important that dust do not enter into the clean room under manufacturing...... Similar Editorial : Fire the CEO by John Jantsch. | Source : Study Technology
Crankcase Explosion In order to understand the phenomenon of crankcase explosion, we have to understand the nature of fire, because, after all, an explosion is a very rapid propagation of fire.A fire will only start whenever three conditions are met: fuel, oxygen, and heat. A fire can very well start inside the crankcase of a diesel engine when the conditions are just right. For all the recorded occurrences of...... Source : Study Technology
Whats So Special About Air-Conditioning Compressors? What's the difference between an air-conditioning compressor and an air compressor?Obvious question? Or is there more to it than the different kind of gas that the compressor handles?Of course the refrigerant gas has something to do with the design of the air-conditioning compressor. For one thing, the refrigerant gas has a unique property of being a liquid at normal room temperatures, and it can...... Similar Editorial : So Special by Kevin Dark. | Source : Advanced Technologies Llc
Burning Smells - Indication Of Trouble What's that Burning Smell?If you are running machinery, you will be asked this sooner or later. Machines produce heat. And heat produces burning smells. It's as simple as that! I am sure many of us can sense that something is not right when we smell burning. After all burning means overheating. Machines are not meant to overheat. But sometimes they do.Questions…questions…How to tackle this?Is it...... Similar Editorial : Burning Bridges is Bad by Heather Wallace. | Source : Advanced Technologies Llc
Simple But Powerful Centrifugal Chillers Centrifugal chillers are used for cooling large buildings in a centralized air conditioning system. There are other types of chillers using screw compressors and reciprocating compressors. These are usually smaller in size. Today's topic is about centrifugal chillers - the ultimate choice for any air conditioning installations higher than 500 RT (refrigeration tons)Basically, centrifugal chillers...... Similar Editorial : Powerful Communication by Connie Butler. | Source : Advanced Technologies Llc
