The National Electrical Manufacturers Association (NEMA) recently published NEMA WD 7 Occupancy Motion Sensors Standard. The standard was previously published as a guide to the common use of occupancy motion sensors. It covers the definition and measurement of field of view and characteristics for all manner of vacancy and occupancy sensors using passive infrared, ultrasonic, or microwave technology, either in standalone or combination.
The latest edition of NEMA's Electroindustry Business Confidence Index (EBCI) for current conditions in North America shows a sharp jump in February, rising more than 18 points to 72.5, its highest level in more than six years. The survey's measure of the degree of change in current North American conditions also rose to its highest mark in almost 2 years, soaring to +0.7 in February from +0.1 in January.
— Robert Repas, Assoc. Editor
Articles
Students at Brigham Young University have had a good year when it comes to electric vehicles. Two of the engineering school’s class projects recently set speed records, one at the Bonneville Salt Flats, the other on a drag strip at the Mason Dixon Dragway in Hagerstown, Md.
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 'Top 10' Flat Cable Benefits
Here they are: the Top 10 benefits of using flat cables. Count them down with us. Here's a preview: #4- Flexibility; #5- Greater Strength; #6- Consistent Electrical Characteristics; #7- Greater Current Carrying Capacity; #8- Reduced Skewing Effects. See the details on these and learn about all 10 Benefits at Cicoil.com. Then head over to the Cicoil Online Configurator to see just how easy it is to build a custom flat cable and receive an instant quote! www.Cicoil.com
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Platinum e Motors from Leeson Electric Corp., Grafton, Wis., use a range of advanced features that increase their efficiency and power density, letting customers get more power out of smaller motors. The permanent-magnet ac motors are also built to CI Severe Duty standards, making them suitable for use in harsh environments.
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 Solid-State Pressure Switches for Demanding Applications
Built from Gems proven CVD and ASIC design, the PS98 solid-state pressure switch offers greater accuracy in rough environments such as off-highway and other mobile applications. This switch is an ideal alternative to electromechanical types when cycles exceed 50 cycles/minute and broad frequency response is needed. In addition to a modular design, a host of pressure ports and electrical connections are available. Switch and switch-back points are factory set per customer specification. 0 to 6000 psi (0 to 414 bar) www.gemssensors.com
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Ethernet, once thought to be the sole province of computer networks, has found itself linked to applications and devices far beyond its original scope. Aside from the normal computer to computer communications, Ethernet today links many diverse devices, including cameras, motor controls, VoIP phones, intercom paging and public-address systems, industrial devices for sensing, monitoring, and control, and wall clocks synchronized to network time protocols, to name just a few.
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 Specifying High-Performance Cables: The Devil is in the Details
Many of the problems that surround cable failure, especially in extreme and harsh operating environments, could have been avoided by selecting the correct cable from the outset. In today's world of sophisticated electronics, cable failure is not an option. This whitepaper discusses several criteria to consider when specifying high-performance cables, and helpful tips to reduce downtime and avoid failure. Download Now
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A chemical engineer at Stanford University has developed a pressure sensor based on a pair of transparent films of single-walled carbon nanotubes. The nanotubes act as springs, letting the sensor accurately measure forces on it as it is being pulled like taffy or squeezed like a sponge.
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Featured Video
Eric Andersen from Cognex Corporation demonstrates the operation of a liquid lens that lets a code reader autofocus on small to large 1D and 2D bar codes. Length: 2:02
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New Products
The slim and compact SG1 stringpot comes with a 10K-Ω potentiometer that provides a voltage divider output signal proportional to the position of the spring-loaded measuring cable. It has a stroke range of 80 in. (a 120-in. version is coming), and operates at 0 to 160°F.
Celesco Transducer Products
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Keypad versions of the AKI Series HMI panels help maintain screen clarity and provide tactile feedback for gloved users or those with soiled hands. The panels are available in 5.7 and 10.4-in. screens and have LED status indicators.
Kollmorgen
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Posital optocode absolute rotary encoders are programmable in compliance with Common Industrial Protocol specifications. Signal and power connections are via M12 micro-style connectors for reliability in harsh environments.
Fraba Inc.
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The U8030 Series is the only triple-output power supply in its class with front-panel programming, which saves time and reduces complexity by letting users set and control key output parameters without extensive programming knowledge. The dc supplies are suitable for margin tests, burn-in or reliability tests, and general electronics manufacturing.
Agilent Technologies Inc.
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Featured Links
Trans-Tek is a leading manufacturer of Linear and Angular Displacement and Linear Velocity Transducers. The company also develops customized transducers for specific application requirements. www.lvdt-transducer.com
Electric Heaters for Medical Equipment
Hotwatt has maintained leadership in manufacturing resistance heating elements for the past 60 years. Applications include Fluid heating, Sterilization, Incubation, Humidifiers, Pharmaceuticals and Portable Heated Trays. www.hotwatt.com
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