Ethernet and Profibus in a potassium mine May 2003 It is believed that the potassium deposits in Germany were formed more than 200 million years ago. Today, these deposits, lying deep under the surface, provide an important natural product: mineral salt. ...
IP connectivity offers flexible and efficient data access May 2003 Trinity Telecomms is offering Wavecom's IP wireless solution for connectivity to the Internet. This allows efficient solutions for data retrieval, update and monitoring. Data transfer can be performed ...
Rationality in machine automation April 2003 Gefran offers the machine manufacturer and OEM a complete range - MMI, intelligent control via modular PLCs, intelligent switching devices in the panel and a line-up of sensors, which include load cells, pressure transmitters, potentiometric devices and temperature sensing all working as one high-performance system
Flow loops behaving badly: case history 70 April 2003, Michael Brown Control Engineering I have lost count of the number of times I have been told that flow loops are very simple things, that they are easy to tune, that you do not need a tuning package to tune them, that they can be tuned ...
Profibus fibre-optic transceiver March 2003 The ERbic Profibus fibre-optic transceiver converts the electrical signals of the Profibus interface into optical signals. Data transmission is effected bi-directionally, with data transparency in half-duplex ...
Filters - the great deceivers March 2003, Michael Brown Control Engineering Noise on the PV signal was discussed in the previous loop signature article, and it was mentioned that it is generally better to live with the noise rather than filtering it out; provided it does not ...
The impact on installation on network performance February 2003, Rockwell Automation Industry studies show that installation and media related problems account for 70-90% of the downtime occurrences in operating networks
Speeding up system implementation at Western Platinum Refinery February 2003 ProDef, an application that provides a common development environment for the design, configuring, programming and documentation of control systems, has helped system integrator DW Controls to implement ...
Some unusual integrating processes February 2003, Michael Brown Control Engineering As mentioned in previous articles, all industrial processes fall into one of two classes of dynamics, known as self-regulating and integrating. In particular refer to Loop Signature No. 2 for a full description ...
New system intregrator is formed January 2003 The birth of Motiontronix was on the cards for quite a while, the process was accelerated by the fact that Control Techniques SA had needed to streamline the company for some time, in particular the sales ...
Control loop case history 68: control mayhem on a mine December 2002, Michael Brown Control Engineering I have often written about the dearth of understanding of practical control, which is largely due to the generally purely theoretical teaching of process control at educational institutions. I have also ...
SA system integrator expands into Botswana November 2002 Gauteng-based water engineering experts Thuthuka Project Managers has expanded into Botswana with the registration of Thuthuka Project Managers Botswana.
Thuthuka Project Managers' project engineer ...
Internet protocol over Ethernet increases November 2002 The integration of automation and enterprise systems requires a change in the architecture of open control systems. From Advantech's point of view, the level of integration between automation and enterprise ...
Load cell technology in practice - Conclusion October 2002, Instrotech A lightning strike within a 300 m radius of the geometrical centre of the site will definitely have a detrimental effect on the weighbridge
Problems encountered in level controls October 2002, Michael Brown Control Engineering This month's article deals with a few of the more difficult problems encountered in level controls. Before going into them it would be appropriate to summarise a few important points on integrating processes ...