Refrigerant Testing. Cheap Commercial Freezers. Boat Refrigerator.

Refrigerant Testing

refrigerant testing
  • Causing cooling or refrigeration
  • any substance used to provide cooling (as in a refrigerator)
  • causing cooling or freezing; "a refrigerant substance such as ice or solid carbon dioxide"
  • (refrigeration) the process of cooling or freezing (e.g., food) for preservative purposes
  • Reveal the strengths or capabilities of (someone or something) by putting them under strain
  • examination: the act of giving students or candidates a test (as by questions) to determine what they know or have learned
  • an examination of the characteristics of something; "there are laboratories for commercial testing"; "it involved testing thousands of children for smallpox"
  • Take measures to check the quality, performance, or reliability of (something), esp. before putting it into widespread use or practice
  • Give (someone) a short written or oral examination of their proficiency or knowledge
  • the act of subjecting to experimental test in order to determine how well something works; "they agreed to end the testing of atomic weapons"
refrigerant testing - Wey-TEK Refrigerant
Wey-TEK Refrigerant Charging Scale by Inficon
Wey-TEK Refrigerant Charging Scale by Inficon
Wey-Tek Recovery Scale # Compatible with all refrigerants # 220 lbs. or 100 kg capacity, ±0.25 oz. accuracy # Manual zeroing button # Includes one 9V battery and hard plastic storage case # One-year over-the-counter exchange warranty Wey-Tek Charging Module # Adds charging function to Wey-Tek recovery scale # Charge/hold key allows interruption of the charging process # Displays target charge and total refrigerant transferred # Provides 110V power to the recovery scale # Programmable in 1/4 oz. increments # 1/4" inlet and outlet flare fitting # Includes communication cable, AC/DC power adapter and hard plastic storage case # One-year over-the-counter exchange warranty

84% (11)
Periodic Table in Art Deco - Carbon
Periodic Table in Art Deco - Carbon
6 protons and (most often) 6 neutrons in its nucleus. 6 electrons. Self loving, Infinitely variable, life or death, strong or delicate, easily manipulated Formed in super giant stars from the fusion of 3 helium nuclei, or the decay of lithium-5 and berylium-8. Carbon is flung around the universe during supernovae. Carbon is a remarkably versatile element. It is not surprising that life is based exclusively carbon and not any other elements. Carbon's electronic configuration - 2 partially filled P-orbitals - and the close energy between the 2S and 2P orbitals leads to a situation where 4 SP3 hybrid orbitals form and orient themselves at the points of a tetrahedron. Carbon forms strong, flexible bonds with itself and with other elements concatenates into long. Life can only arise from such variable and complex molecules. Carbon provides the flexibility to create molecules that alone or in concert, encode information, carry out and control reactions, create environments and structures that contain the enormous number of reactions needed to make a creature live. A nearly infinite variety of molecules can be made from carbon. from straight hydrocarbon chains that power our cars to sugars that power our bodies. Carbon forms deadly poisons and life saving drugs - the difference often being a small displacement of 1 bond. High strength carbon fibers and carbon steel cables, spider webs and silk, nylon and cotton all are based on carbon and function because of its arrangement in in their core molecules. Carbon also displays several amorphous forms. Diamond and graphite and coal are all the same thing. Diamond, one of the hardest, clearest substances is the same element as graphite - named so because for its softness and usefulness in writing. Diamonds and their softer best friend are both based on carbon which also forms the backbones of the molecules that control emotion, arousal, physiological responses, and the recreation of life itself. Pretty amazing for a single element. Carbon's chemical properties have made it the element of the 20th century. Petroleum and and chemical knowledge lead to the creation of compounds never before seen on earth and likely ever in the universe. Plastics, fire retardants, lubricants, coolants, refrigerants cleaners, insulators, etc... critical elements of many materials and processes that define life in the 20th century. These materials have lead to amazing things - computers, aircraft, vehicles, prostheses, fibers, insecticides, etc... things that have made our lives better than any others in the history of civilization. Many of these compounds have high costs as well. Environmentally and with respect to human health in the rush to create and utilize these new compounds we got ahead of ourselves and created them faster than we could test or dispose of them properly. As a result much of America's old industrial infrastructure is contaminated with industrial waste products and compounds that seemed harmless at the time. among the infamous compounds are benzene, polychlorinated biphenyls (PCB), dioxin, tetrachloroethylene (TCE), sodium triphosphate, and polyaromatic hydrocarbons (PAH). There was clearly a misguided belief that the earth would infinitely absorb and detoxify these compounds. We know that isn't true and clearly changes must be made. I believe they are happening and we are adjusting our relationship with these compounds to utilize them where they are needed, recycle them when possible and eliminate them where they are simply wasteful.
Airedale Training School - Airflow Rig
Airedale Training School - Airflow Rig
Various training rigs improve knowledge by using different refrigerants and low temperature refrigerant equipment and the very latest in measurement and testing technology – including air ducting measurement and chilled water systems

refrigerant testing
refrigerant testing
Testing Computer Software, 2nd Edition
This book will teach you how to test computer software under real-world conditions. The authors have all been test managers and software development managers at well-known Silicon Valley software companies. Successful consumer software companies have learned how to produce high-quality products under tight time and budget constraints. The book explains the testing side of that success.

Who this book is for:
* Testers and Test Managers
* Project Managers-Understand the timeline, depth of investigation, and quality of communication to hold testers accountable for.
* Programmers-Gain insight into the sources of errors in your code, understand what tests your work will have to pass, and why testers do the things they do.
* Students-Train for an entry-level position in software development.

What you will learn:
* How to find important bugs quickly
* How to describe software errors clearly
* How to create a testing plan with a minimum of paperwork
* How to design and use a bug-tracking system
* Where testing fits in the product development process
* How to test products that will be translated into other languages
* How to test for compatibility with devices, such as printers
* What laws apply to software quality

The original printing of Testing Computer Software set the standard for the emerging field of test engineering with a full tour of the state of the art in managing the testing process. The reissued text makes this classic out-of-print text available once again. Though it relies heavily on older examples (including MS-DOS) and has not been updated, this text is still a worthwhile resource for practical-minded advice on the realities of testing.
The best thing about Testing Computer Software is its practical point-by-point guide to everyday software testing, from creating a test plan, to writing effective bug reports, to working with programming staff and management to fix bugs.
That said, this book's early frame of reference shows how far we've come. (The book relies heavily on MS-DOS examples and features some truly embarrassing anachronisms, including the mention of testing dot-matrix printers and even EGA/VGA video modes.) The bibliography stops at sources from 1992 and features many references from the 1980s. Nowadays, automated software testing tools are the staple of any testing strategy. This book even advocates a wait-and-see approach to the "new" Microsoft Test.
These limitations aside, there is still a good deal to mine here. Much of the approach to testing is still very valid for any aspiring or working test engineer. Clearly, readers of the first edition will have little reason to upgrade to this second edition, but for anyone who appreciates a "classic" (and indeed a pioneering) text in the field of software testing, it's good to have Testing Computer Software in print again. --Richard Dragan
Topics covered: test case design, test planning, project lifecycle overview, software errors, boundary conditions, bug reports, regression testing, black box testing, software quality and reliability, managing test teams, printer testing, internationalization, and managing legal risk.