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Humidity Measurement in Cleanrooms

Choosing the right type of measurement instrument is important in order to reach the best humidity measurement results. Calibration should also be carried out regularly, and to traceable standards. Products manufactured in cleanrooms cover a wide range, including pharmaceuticals and semiconductors. Humidity, temperature, particles and pressure are often controlled, as these parameters can have serious effects on product quality and production efficiency.

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Alternative to Globe Valves in Your Pharmaceutical Plant

A biopharmaceutical plant in the U. S. was operating a cold/chilled glycol (CG) system to cool approximately 50 process vessels, mainly jacketed tanks (250 – 3500 L), and several heat exchangers to produce its products. The plant was approximately 18 years old and circulated propylene glycol (40%) and water (60%) as the heat transfer medium. Chillers in the basement generated 28°F (-2°C)cold glycol which was then circulated by three constant-speed centrifugal pumps to the distribution network. System differential pressure control was achieved with a bypass valve that short-circuited the CG supply to the return side during periods of low demand.

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Achieve Optimal Chiller Performance

Proper seasonal startup and shutdown procedures, along with a regular maintenance program, help to ensure that a chiller operates dependably and efficiently.  This results in reduced operating costs and improved occupant comfort throughout its life cycle.   SEASONAL STARTUP A seasonal startup ensures that a chiller will operate reliably and efficiently throughout the upcoming cooling…

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Achieve Optimal Chiller Performance in Your Healthcare Facility

Proper seasonal startup and shutdown procedures, along with a regular maintenance program, help to ensure that a chiller operates dependably and efficiently.  This results in reduced operating costs and improved occupant comfort throughout its life cycle.   SEASONAL STARTUP A seasonal startup ensures that a chiller will operate reliably and efficiently throughout the upcoming cooling…

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Achieve Optimal Chiller Performance in Schools

Proper seasonal startup and shutdown procedures, along with a regular maintenance program, help to ensure that a chiller operates dependably and efficiently.  This results in reduced operating costs and improved occupant comfort throughout its life cycle.   SEASONAL STARTUP A seasonal startup ensures that a chiller will operate reliably and efficiently throughout the upcoming cooling…

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Advantages of Electronic vs. Pneumatic Actuation in Your Pharmaceutical Plant

Recognition of the cost/benefit ratio of high quality electric actuation in the U.S. is on the rise.  Pneumatic actuators were cost-effective at one time, but they are no longer well-suited for modern electronic controllers.  They require interfaces which add expense and degrade the signal from the high quality control outputs now available. In an effort…

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Dew Point in Compressed Air – Frequently Asked Questions

Vaisala has put together some FAQs into an application note that will help you understand what dew point is all about and how important it is to measure dew point in compressed air applications.The complete document can be downloaded on Vaisala’s website: Dew Point in Compressed Air FAQ’s Ever wonder what dew point is exactly…

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Commercial Boilers: Essential Tips for a Long and Happy Life

Even trade professionals who are very attentive to HVAC maintenance can be willing to “let the boiler slide” for months or even years without a proper checkup. Why? In many cases – especially with early generations of atmospheric gas boilers – this happened because the equipment was designed to go a long time without maintenance….

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Hospital Energy Efficiency Case Study: Improvements for a Large, Long-Standing Hospital

Location: The Ottawa Hospital (TOH), Ottawa, Ontario Problem:  Lack of visibility into building systems compromises hospital’s ability to manage energy consumption. With three campuses totaling approximately four million square feet and buildings ranging from 30 to 90 years old, The Ottawa Hospital found it extremely difficult to reevaluate their automation strategies. Years of deferred maintenance…

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