Saturday, September 27, 2014

Custom Electric Heaters for Unique Thermal Systems Require the Right Thermal System Partner

Thermal System PartnerOEMs in the analytical, semiconductor, biomedical, life-science, food service and environmental industries continually design new pieces of equipment offering their customers greater efficiencies, smaller foot prints and greater production rates. When the piece of OEM equipment requires precise heating, consultation with an experienced thermal systems engineer will provide significant time savings and budget control.

More specifically, working with an experienced thermal system consultant provides these important benefits: front-end, practical design review to optimize manufacturability; timely prototype development; partnerships and alliances with platers, brazers, casters and heating element manufacturers; single source responsibility; testing and calibration; inventory management; value-added assembly; and cleaning and packaging.

Friday, September 26, 2014

Flow Measurement for Industrial and Municipal Water Treatment Systems

Accurate and reliable liquid flow measurement for municipal and industrial water and wastewater treatment systems present interesting challenges. A cost effective, and very accurate flow meter is essential to assure proper flow measurement of water resources and wastewater effluent.

In water and wastewater treatment, accurate flow measurement is critical to the following to applications:

Water Treatment
  • UV Dosing 
  • Filter Balancing and Backwash
  • Effluent
  • Distribution 
  • Wells & Booster Stations 
  • Potable Water
Wastewater Treatment
  • Effluent 
  • Recycle / Reclaim
Accurate flow measurement is a critical control variable for the following industries: chemical & petrochemical plants, metals & mining, power plants (and cogeneration), paper mills, food & beverage.

Industrial Applications include:
  • Fire Water 
  • Raw Water 
  • Inlet to Surge Basin 
  • Cooling Water
  • Feed Water
  • Effluent
One particularly well suited flow meter for these applications is the FPI Mag Flow Meter from McCrometer. It provides simple installation, lower costs, unmatched accuracy, a very robust construction, and the versatility to solve many flow metering applications.

Check out this video to learn more:



Tuesday, September 16, 2014

Safety Showers and Eyewash Stations - The Unsung Heros of the Plant Floor

Safety showers
Hughes Safety Shower
Safety showers and eyewash stations might just be the most forgotten, but most important piece of equipment on the factory floor. They can save someone's life, or greatly reduce the amount of injury resulting from a spill or splash of hazardous material.  Plant managers and safety officers must comply with OSHA (Occupational Safety and Health Administration) mandates for safety showers and wash stations with the help of ANSI (American National Standards Institute) standard Z358.1-2009.

This standard requires that all flushing equipment must be in easy to find areas, and accessible in 10 seconds (The Ten Second Rule). This equipment must be installed in well-lit areas and have an established flow rate of 0.4 gallons per minute at 30 PSI for eyewash stations and 20 gallons per minute at 30 PSI for drenching showers.

Wednesday, September 10, 2014

Aluminum Nitride Ceramic Heaters Open Doors to Better Machine Design

Aluminum Ceramic Heaters
Aluminum Ceramic Heaters
(Courtesy of Durex)
Aluminum Nitride (AlN) Ceramic heaters are a relatively new entry in the very high watt density heater market and are an attractive alternative to traditional metal sheathed heaters. Capable of achieving up to 2000 watts per square inch, and operating temperatures of up to 1000 deg. C, these heaters show great promise for semiconductor processing applications such as crucible heating, fluid and gas handling and chemical vapor deposition. 

The heaters are made by "tracing" a resistance material (Tungsten) on a the ceramic base at various thicknesses, corresponding to the performance requirements of the heater. The Tungsten and AIN expand and contract at very similar rates, which greatly reduces the mechanical concerns of delamination. Binders and trace additives are added to the ceramic and Tungsten for additional strength. The resulting construction allows for some pretty impressive thermal cycling - one example is an application with a 200 deg. C temperature swing every 30 seconds.

AIN ceramic heaters offer significant advantages over metal sheathed heaters and their inherent performance limitations. Material compatibility, fatigue, outgassing and thermal lag must be considered when applying metal sheath heaters. Ceramic heaters combine excellent thermal conductivity with outstanding chemical resistance, strength, inertness and design flexibility. Additionally, RTD sensors can be deposited right on the ceramic heater itself for optimum control. 

Capable of forming virtually any shape, along with their excellent mechanical, thermal, dielectric, chemical resistant and embedded sensors, Aluminum Nitride Ceramic heaters open the doors for engineers to design equipment to new levels of performance.

Saturday, September 6, 2014

Thermal Mass Flow Controller Choices

Here is a video, originally produced by AZoTV for Brooks Instrument. The video, through the various Brooks Instrument models of mass flow controllers,  gives a quick overview of the selection criteria for thermal mass flow controllers.