February 2000
Banner's new Camera-based sensor is inexpensive and easy to program. The PresencePLUS Pixel-counting sensor captures a 256-level greyscale image of a specified area, converts the image to black and white pixels, counts the pixels and compares the count to use-programmed threshold values to determine a pass or fail judgement. The complete system consists of the sensor (camera) connection cable and a hand-held programming device. The programming device can be removed during normal operation of the sensor and can be used to program a number of sensors. Up to four different sets of parameters can be stored in the programmer, allowing a fast changeover for different products. PresencePLUS inspection systems are a solution tomany inspection applications where a defect can occur anywhere within the sensors field of view.
Rodney Topham - RET AUTOMATION CONTROLS
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Control Systems and Automation
An open system architecture for control and instrumentation on natural gas to power plants
Michael Bell (Alpret Control Specialists) ,
This article overviews the first application of the PlantWeb architecture using FOUNDATION fieldbus on a major offshore gas production platform
Energy Efficiency, Supply and Management
Future-proofing your building
Dennis Goldman (Smartronics) ,
We examine the benefits of integrating all building services into one holistic package
Engineering Projects and Plant
Jwaneng aquarium project
The Aquarium features the latest technology in hands-free diamond sorting and will bring about significant improvements in overall plant efficiency
Plant Maintenance and Refurbishment
Ultra high frequency diagnostics for gas insulated substations at 400 and 765kV
Jan Reynders (University of the Witwatersrand) ,Luke van der Zel (Eskom Technology Services International),
The UHF technique is the latest in a handful of techniques for detecting partial discharges in GIS
Thermography for electrical applications
Pieter Myburgh (Thermal Imaging Systems) ,
Plant maintenance increasingly makes use of sophisticated techniques to better plan the use of available time and other resources
Sensors, Switches and Transducers
Soft sensors for data integrity in the process industry
Retief de Villiers (Crusader Systems) ,
For modern process tools to perform optimally in the integration of information and knowledge about the enterprise, they depend strongly on the integrity of the various data sources
Reverse-acting radar level transmitter - tackling the most difficult level applications
John Oliver (Krohne, France) ,
Tackling the inverted interface application - where the heavier product has the lower dielectric constant - has become a major issue in industry
