By creating a special vacuum control function for its established Model 2704 controller, Eurotherm has demonstrated that complex processes like those found in vacuum heat treatment furnaces may use a single combined function controller to save cost and space. This multifunction facility will also be useful for similar vacuum related processes such as freeze dryers, autoclaves, semiconductor furnaces and CVD furnaces.
Complex heat, pressure and vacuum cycles, such as those found in advanced heat treatment furnaces, usually require the use of high specification programmers or PLCs. In such cases, the temperature control function alone may be handled using one or more temperature controllers, either in cascade or single loop mode. Sometimes where vacuum bags are used the same controller can also regulate pressure.
In addition to separate temperature and pressure control facilities, systems of this type will usually have a dedicated vacuum control unit, designed and built to traditional standards, adding considerable cost and bulk to the equipment.
The introduction of the 2704 vacuum option has enabled Eurotherm to integrate both the temperature and vacuum control functions into one unit, providing both OEMs and heat treatment specialists with a more economic and compact control solution than they have available at present. Removing the need to buy separate expensive vacuum controllers can reduce the size of a system control PLC, or in some cases remove it completely. Eurotherm claims that the 2704 is the first DIN format temperature controller to offer this feature.
The use of a single 2704 in this type of application can offer clear advantages in processing efficiency. The unit provides a more informative display than most traditional vacuum control units, and in addition, it provides a smooth switchover function between high and low vacuum levels. This function is not generally available with traditional designs of vacuum controllers, a weakness that has been known to cause problems within some heat treatment processes.
Temperature measurement solution for foundry
Temperature Measurement
AMETEK Land, a world-leading manufacturer of infrared pyrometers, scanners and thermal imagers, is helping an Indian foundry to support metal quality and reduce ongoing costs.
Read more...How wet steam undermines boiler efficiency Endress+Hauser South Africa
Temperature Measurement
Endress+Hauser understands the daily challenges and demands placed on energy and utility managers across the spectrum of steam generation, distribution and consumption activities. Its global team is committed to working with its partners to overcome these complexities, and particularly those that aim for a safe, economic and sustainable sitsce of steam energy production and delivery.
Read more...Dramatically reducing greenhouse emissions
Temperature Measurement
Online teaser: There is considerable potential for reducing CO2 emissions in the mill process by optimising the heat source for drying. The most promising approach to achieving a carbon neutral process in a hot gas generator is the combustion of green hydrogen.
Read more...Infrared camera for condition monitoring and early fire detection Instrotech
Temperature Measurement
The Optris PI 640i thermal imager is the smallest measuring VGA infrared camera, with a body-sized volume of 45 x 56 x 90 mm, and weighing only 269 to 340 g, depending on the lens. It counts among the most compact thermal imaging cameras on the market.
Read more...Paint curing applications in the automotive industry R&C Instrumentation
Temperature Measurement
For successful paint cure, irrespective of the paint chemistry being used, there is a critical need to measure and control the temperature of the car body as it travels through the oven. Today, paint ovens are controlled in a sophisticated fashion via thermocouples located in each zone to give constant feedback on the ambient temperature.
Read more...Universal temperature transmitter with drift detection WIKA Instruments
Temperature Measurement
The new model T38 digital temperature transmitter from WIKA enables extremely flexible and stable temperature measurement. The instrument offers a maximum of sensor connection combinations, and a new type of drift detection.
Read more...Temperature monitoring in the metal casting process Instrotech
Temperature Measurement
During metal casting, the liquid material is poured into a mould, and after solidification becomes a solid body. Both too-high and too-low casting temperatures can lead to quality defects. The compact Optris PI 05M infrared thermal imaging camera from Instrotech can monitor the casting process.
Read more...Pyrometer range with enhanced features
Temperature Measurement
AMETEK Land has relaunched its market-leading SPOT pyrometer range with enhanced features and benefits for a wide range of industrial applications. The new SPOT+ family offers a wide range of temperature measurement from 50 to 3500°C, and a choice of different wavelengths for applications including metals, glass, cement and lime kilns, and foundries.
printer friendly version