Asphalt, which is manufactured in asphalt mixing plants for the construction and road building industry, consists mainly of bitumen and gravel of different grain sizes. Other materials, such as binders, sand, stone chips and special additives are also mixed in.
Depending on the temperature and the mixing ratio, the final product is either a tar-like liquid or a relatively solid material. Composition and properties vary depending on what the asphalt is used for.
The mixture is prepared in an electronically controlled process in which the individual components are brought together in a specific order and mixed. Temperatures up to 180°C, steam, intense filling noise, different repose angles as well as the extremely sticky and abrasive product place heavy demands on the level measuring system.
In order to maintain the quality of the asphalt mixture for an extended period, the asphalt is stored in temperature controlled containers. Vega’s radar sensor VegaPuls 68 monitors the level continuously without touching the medium and unaffected by the difficult conditions, ensuring a smooth production process.
VegaPuls also monitors the level during filling and emptying. The level data is forwarded to the downstream VegaMet 381 signal conditioning instrument and displayed there. This unit also provides a switching contact as dry-run alarm to prevent the feed unit from running empty. By using these systems in conjunction with one another, optimal utilisation of the costly container volume is ensured.
VEGA handles the pressures of water treatment systems VEGA Controls SA
Pressure Measurement & Control
A water treatment system for a major metropolitan area in the Midwestern United States demands careful monitoring and management of processes across its sprawling network. Choosing VEGA for its process automation needs meant more than just obtaining precise and reliable pressure sensors.
Read more...Smart alternative for float switches ifm - South Africa
Sensors & Transducers
With the LI level sensor, you can reliably detect leakages and point levels on a permanent basis. The capacitive measuring system has no moving parts. Malfunction or maintenance issues due to deposits on the mechanical parts are therefore eliminated.
Read more...VEGA takes the pressure out of water pressure measurement VEGA Controls SA
Editor's Choice
Water treatment systems in metropolitan areas require careful monitoring and management processes across widespread networks. However, process plants choosing VEGA for their process automation know that the company offers more than just precise and reliable pressure sensors and instrumentation.
Read more...Telco sensors in the pulp and paper industry Gail Norton Instrumentation
Sensors & Transducers
The pulp and paper industry poses a major problem for most photoelectric sensors. The high level of contamination in these dusty, dirty and grimy environments makes it impossible for most competing sensors to operate and sense reliably and efficiently.
Read more...Precision acoustic imagers Comtest
Sensors & Transducers
To help users identify and localise ‘mechanical areas of interest’ within short timeframes, Comtest has added a unique new feature to Fluke’s ii910 precision acoustic imagers.
Read more...Efficiency and precision with IO-Link sensors RS South Africa
Sensors & Transducers
RS South Africa has its own brand known as RS PRO, which offers a choice of over 88 000 products across all industries and technologies. The guaranteed quality and breadth of this range make RS PRO the smart choice for your business.
Read more...Smart alternative for float switches ifm - South Africa
Sensors & Transducers
With the LI level sensor, you can reliably detect leakages and point levels on a permanent basis. The capacitive measuring system has no moving parts. Malfunction or maintenance issues due to deposits on the mechanical parts are therefore eliminated.
Read more...Sensor technology for cartonboard machine for paper and packaging VEGA Controls SA
Pressure Measurement & Control
Paper and packaging specialist, LEIPA undertook a comprehensive modernisation project, combining three stock preparation lines into one, and making investments in new plant components and extensive automation technology. Because of the good experiences the company had already had with VEGA sensors, those responsible for planning and maintenance decided in favour of the VEGABAR 82 pressure transmitter as the standard instrument for level and pressure measurement in the new stock preparation system.
Read more...Optical fork sensor series Gail Norton Instrumentation
Sensors & Transducers
The OFS series consists of self-contained optical fork sensors that are housed in a durable, U-shaped aluminum housing, which operates in through-beam mode.
Read more...In-line process transmitter to optimise sterile processes WIKA Instruments
Sensors & Transducers
The new model DMSU22SA in-line process transmitter from WIKA helps to optimise sterile processes in the pharmaceutical and food industries, with less energy consumption, less cleaning effort ,and more safety.