Thyristors for furnace control
June 2003
Temperature Measurement
Eurotherm has consolidated its previously extensive range of thyristors into a more dedicated offering. Protea Automation Solutions, which represent Eurotherm in this country, now markets this range specifically for the furnace industry. Whether the load is constant or variable resistance, inductive or transformer coupled, single or three-phase, Eurotherm can provide thyristors to meet exact requirements. The standard range caters for currents up to 1000 A but by using separate driver and power units, this range can be extended.
The Eurotherm thyristors can be provided for single phase, 3-phase 3-wire (2 leg switching) or 3-phase 3 or 4-wire (3 leg switching). Single-phase units are also available.
The single-phase thyristors are available in 11 sizes with current ratings of 75 A through to 150 A. The 3-phase thyristors are available in eight sizes, with ratings from 63 A through to 1000 A.
The compact size of the Eurotherm 3 phase power units make them economical to install. Auto sensing of phase rotation makes them simple to connect up. Built-in diagnostics on some models make setting up and fault finding easy. Since the operating mode is set by internal links and switches on the TE and TC 3-phase ranges it is possible to customise power control to exact requirements.
Protea Automation Solutions provide a free comprehensive Thyristor Selection Guide that enables the correct thyristor unit to be chosen to match requirements for specific types of load. The formula required to calculate the thyristor currents for resistive loads is also included.
For more information contact, Jerry Smits, Protea Automation Solutions, 011 719 5700, [email protected], www.protea.co.za
Further reading:
New temperature transmitters with Profibus connectivity
Temperature Measurement
Siemens is enhancing its temperature measuring device portfolio with the transmitter duo, Sitrans TH420 PA and Sitrans TF420 PA. Both devices feature Profibus connectivity, advanced safety functions and expedited commissioning all in one unit.
Read more...
Enhancing industrial efficiency through advanced temperature control
Iritron
Temperature Measurement
Iritron has been offering modular smart thyristor drives to the local and international mining, minerals and metals market, including the latest new leading innovations in temperature control technology. These drives combined with advanced proportional-integral-derivative (PID) control will change the way large industries manage their heating processes, reducing costs and extending equipment lifespan.
Read more...
Non-contact infrared thermometer
Temperature Measurement
AMETEK LAND has developed a new non-contact infrared thermometer for precise measurement and control during deposition processes in optical fibre manufacturing.
Read more...
High-precision fill quantity control in food supplement production
Temperature Measurement
Vital Products was looking for a precise and efficient solution to check the weight and ensure the completeness of its products. Minebea Intec, a specialist in industrial weighing and inspection technologies, was able to provide a solution.
Read more...
The critical role of temperature measurement in flame hardening
Instrotech
Temperature Measurement
Flame hardening is a heat treatment process widely used on parts made from mild steels, alloy steels, medium carbon steels and cast iron. Accurate temperature measurement is not just important, but critical for the success of flame hardening.
Read more...
Noncontact infrared temperature control in aluminium rolling process
Instrotech
Temperature Measurement
The aluminium rolling process is critical to the aluminium manufacturing industry, where precise temperature measurement is essential for ensuring high-quality product output and protecting equipment. The Optris long-wavelength camera can accurately measure strip temperatures in cold rolling and coiling applications.
Read more...
Where simplicity meets reliability
Endress+Hauser South Africa
Temperature Measurement
The new iTEMP TMT31 temperature transmitter from Endress+Hauser combines simplified selection, ordering, installation and operation with the highest reliability and long-term stability in one product.
Read more...
Automating car window defrosters
Temperature Measurement
Window defrosters are vital features in vehicles, particularly in colder climates. The automotive manufacturer seeks an efficient solution to quickly and precisely measure the temperature of the windows, ensuring that the connections, installed cables and wires work correctly and have no defects before the vehicle’s final release.
Read more...
The impact of thermal imaging in steam methane reformers
Temperature Measurement
As global demand for hydrogen, ammonia and fertilisers increases, LAND is empowering steam methane reformer operators to unlock efficiency gains at existing plants to meet ambitious production targets while also safely decarbonising.
Read more...
Proven indicators monitored in three dimensions
ifm - South Africa
Temperature Measurement
The VVB30x continuously detects vibrations in three measurement axes and uses them to calculate proven indicators for evaluating machine condition.
Read more...
printer friendly version