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Energy Efficiency

Energy Efficiency December 1, 1998

Power Management Helps Your Plant ‘Live Long and Prosper’

Management of industrial power means many things to many people. Available technology ranges from increasingly sophisticated devices that meter power consumption, monitor quality, or provide emergency backup, to full systems able to do all that plus overview usage of power for efficient production and diagnose and possibly prevent outage problems.

By Frank J. Bartos, CONTROL ENGINEERING
Energy Efficiency December 1, 1998

Users Need to Learn More about Power Management

A recent survey of Control Engineering readers about power management indicates most respondents underestimate the extent and cost of poor quality power in their plants. Of the survey respondents, 67% place the source of problems on their utility, although industry experts say two-thirds of all power problems actually originate from within a plant.

By Staff
Energy Efficiency November 1, 1998

Valve Survey Says, ‘Cost Less Important than Support’

Contestants on the show Family Feud won points and eventually prize money for correctly matching their answer to audience survey responses. The valve survey recently conducted by Control Engineering is less animated, but financial rewards for properly selecting, applying, using, and maintaining valves can be much greater than won on Family Feud.

By Staff
Energy Efficiency November 1, 1998

Inverter breaks $150 barrier

Harwinton, Conn. —Nova AC, BBVF adjustable frequency drive is available in 1/2 or 1 hp. This PWM drive provides full torque over a 30:1 speed range and has adjustable linear acceleration and deceleration. Power input is either 115 or 230 V ac single phase. It drives standard 208-230 V ac 3-phase motors.

By Staff
Energy Efficiency October 1, 1998

Micro inverter

Fort Smith, Ark. —Series 5 open chassis micro inverter is a compact, low cost ac inverter for variable torque, constant torque, or constant horsepower applications. Series 5 is available in 1/2 and one horsepower ratings for 115 or 230 V ac output. Features include microprocessor-controlled PWM output, accel/decel rate adjustment, reversing, adjustable current limit, and adjustable slip ...

By Staff
Energy Efficiency October 1, 1998

Motors and Drives Offer a Variety Of Technology Solutions

Variety in electric motors and their controls continue to add spice to the selection process for users of these products. Control Engineering's new research survey of 1,500 readers verifies the diversity of motor and drive products being applied in many industries. In the following results, 358 usable responses represent the survey's base (North America).

By Staff
Energy Efficiency September 1, 1998

Designing and Applying Remote Field Instruments

A remote field instrument is a device used to sense a physical parameter such as pressure or temperature. This measurement is translated to a signal current in the range of 4-20 mA which is proportional to the measured variable. The 4-20 mA standard has provided an excellent platform for the development of process instrumentation.

By Albert O' Grady and Jim Ryan, Analog Devices B.V.
Energy Efficiency September 1, 1998

Inverters withstand washdown

York, Penn. —BCX Series washdown-duty ac inverters are available in 1/6 to 5 hp, 230/460 V ac models. The units feature an integral speed potentiometer and run/stop switch. Three internal potentiometers for adjustments and a 0-5 V dc follower are offered. ACE-KL washdown-duty inverters are available in 1/2 to 5 hp, 230/460 V ac models.

By Staff
Energy Efficiency August 1, 1998

Electronic Motion Control Reaches for the Sky

Electronic motion control has become a complex combination of diverse elements—motors, drives, amplifiers, motion controllers, embedded chips, feedback devices, software tools, and more. This vast mosaic of solutions is supplied by hundreds of companies with new entrants expanding the list.

By Frank J. Bartos, CONTROL ENGINEERING
Energy Efficiency May 1, 1998

HP Vantera Helps Companies with Deregulation

As electric utilities become deregulated or privatized, they will have a much greater need for fast and efficient access to information about their operations and how customers use their services.At the same time, deregulation will increase user awareness of the need to review and understand consumption histories, usage characteristics, and the ability to manage load curves.

By Dave Harrold, CONTROL ENGINEERING