“Hard” water contains minerals, usually Calcium and Magnesium, that form scale and soap scum. In most cases, soft water is preferred to hard water in industrial cleaning. In some cases it can mean the difference between success and disaster. Since its been a while since we last talked about water, you may want to review a …
Preceding blogs on metrology have introduced some basic concepts which can serve as food for thought. Today, I would like to give you a couple of examples of the practical application of the concepts discussed so far in industrial cleaning applications. Monitoring Contaminant Removal – Everyone wants to know how long it takes for a …
No matter what is being measured, it is critical that the measuring instrument chosen be capable of providing an accurate and repeatable measurement of whatever needs measuring. It sounds simple – – but isn’t. In general, the larger the scale the less accurate an instrument becomes. Let’s use weight as an example. Weighing devices come …
At first it may sound like a “no-brainer,” but deciding what to measure can be a challenge. The first part of that challenge is determining what measurements are required to establish that a particular criteria has been met. The next is to determine if the tools required to perform the required measurements are available and, …
Metrology, simply, is the science of measuring things. Metrology is used extensively in the world of industrial cleaning to both control and quantify cleaning processes. Finding the right equipment and procedures to produce accurate and meaningful results is often a challenge for those without extensive knowledge of the science. The upcoming blogs on metrology are …
Deep in a file drawer in my office on a couple of pieces of paper yellowed by time is an article that, written and published in 1954, is a literal snapshot of the notion and perceived traits of an engineer over 50 years ago – when I was only 9 years old. Every once in a …
Sweep in ultrasonic lingo simply means varying the ultrasonic frequency up and down. A sound clip in an earlier post demonstrated the sound of sweeping the ultrasonic frequency. Single Frequency Sweep In an earlier post we also learned that ultrasonic transducers have a property called “resonance.” Very simply, this means that they will make a …
As some of you may have noticed, the illustrations in Monday’s (30 April, 2012) were incorrect. For those of you who didn’t notice, that’s OK – because I didn’t either. It is interesting how much more thoroughly you understand something once you’ve tried to convey it to someone else. Regular readers will know that I, …
In today’s blog we once again bring ultrasonic sounds into the range of human audibility and listen to the sound of frequency sweep. Previous blogs have revealed the sound of amplitude modulation and pulse modulation. Frequency sweep is all about frequency – ideally there is no change in amplitude as frequency is varied. In some …
The preceding blog described the benefit of part agitation in a cleaning process. But, it is not always possible to provide adequate part agitation with a simple agitation of the part parallel to its central axis. With a little creativity, it is possible to provide effective agitation of even very long parts. In fact, there …
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