Stability is defined as a change (or lack of change) in accuracy over a period of time.
Drift is commonly used as a specification to illustrate the stability, or change in accuracy over a period of time, commonly shown as X%/year where X = a number; i.e. 0.25%/year. In this scenario, a device with a ±1% accuracy, would be expected to have an accuracy of ±1.25% (1%+0.25%) after a period of one year. Depending on the design, brand, and range of the sensing instrument, the stability can vary widely. Continue reading “What is Stability and Why is it Important?”
Steamfitters 449 is a union training center that represents nearly 2,700 union-trained steamfitters and are affiliated with the United Association of Journeymen and Apprentices of the Plumbing and Pipefitting Industry of the United States and Canada.
According to the their website, members are highly trained craftsmen who fabricate, install, and service piping systems. Their craftsmen may be found on job sites involving single-family homes, garden and high-rise apartment buildings, supermarkets, food warehousing and processing facilities, power plants, chemical installations, factories, public buildings, and healthcare facilities.
Continue reading “Dwyer Instrumentation at Steamfitters 449 Training Center”
The United States Pharmacopeia (USP) is a non-profit organization that develops standards for human and animal drugs as well as food ingredients and dietary supplements.
For pharmaceutical compounding facilities, USP has guidelines in four general chapters:
- USP <795> Pharmaceutical Compounding – Nonsterile Preparations
- USP <797> Pharmaceutical Compounding – Sterile Preparations
- USP <800> Hazardous Drugs – Handling in Healthcare Settings
- USP <825> Radiopharmaceuticals – Preparation, Compounding, Dispensing, and Repackaging
These four chapters provide guidelines for safety considerations, personnel qualification and training, facilities and engineering controls, microbiology and surface monitoring, cleaning and disinfection, and much more. Continue reading “USP Guidelines for Compounding Facilities”
Dwyer’s Account Executive for our test equipment portfolio, Jaden Lane, recently interviewed Erik from Technical Balance to learn more about his job, company, and relationship with Dwyer. Continue reading “An Interview with Technical Balance”
Water chillers are nothing new, with nearly an estimated 100,000 units operating in North America alone. Chillers are the cooling machines of choice to condition industrial, commercial, and institutional facilities. They are used to lower the temperatures of all kinds of equipment and processes such as: robotic machinery; semiconductors; injection and blow molding machines; welding equipment; die-casting and machine tooling; paper and cement processing; power supplies; power generation stations; compressed air and gas cooling systems; medical imaging machines; chemical, drug, food and beverage production; even simply to cool potable water to desirable levels. Whether for office comfort, keeping data server centers from overheating, or specialized industrial processes, water temperature control plays a vital role in many of the behind-the-scenes activities that affect our everyday lives. Continue reading “Proving Flow Through Chillers”