In aggregate, quarry and mining applications, the conditions are often extremely noisy and dusty. Robust sensors are crucial - whether for mobile plastering machines, mixing systems with heavy vibrating conditions, volume measurements within dosing tanks, stone crushers, conveyors or cement storage silos.
In order to define the correct level measurement technology it is essential to analyze the different process parameters of the single application such as material properties, process temperatures, pressure and connections as well as the process atmosphere. The selection of the right level measurement technologies, their correct configuration and smart positioning will save substantial costs and add up to a significant improvement in the plants’ economic efficiency over its lifecycle.
Concerning precise interface measurement of different solids in liquids there are popular project planning options for continuous level monitoring with lot systems and point level detection with vibrating forks. A company in England who manufactures stone recovery plants for the quarrying industry implements the electromechanical plumb bob NivoBob® for the detection of interface levels with the right feeling for the separating layer. The operator was looking after a principle that is sensitive and simple.
Guided wave radar in narrow storage silo for overfill protection and empty message
Every year, over 40 million cubic meters of ready-mixed concrete is processed in Germany. Already 85% of all concrete and fresh mortar required on construction sites are mixed in ready-mixed concrete plants. In aggregate, quarry and mining applications, the conditions are often harsh, noisy and dusty. The TDR level measurement devices with their high compatibility are used for consistently accurate continuous level detection under difficult varying process conditions, such as high pull-off forces, caking or condensate formation.
Lot solutions as quick and easy measurement device, rotating paddles for extreme temperatures & capacitance RF probes for specialities
Plant operators are busy keeping pace of the wide range of challenges presented by raw materials of the building sector, the changing operating conditions in silos or pipelines or the need for ex-certificates. Such requirements call for measurement solutions that are versatile, whilst representing a cost-effective investment and offering versions fully equipped to meet a wide variety of these requirements. Due to the fast development of the building and quarry industry in the MENA countries during the past years, the demand for more solution approaches for applications of cement plants there has increased. Solutions of appropriate sensor technology for content and point level measurement have to be found in order to support the process flow of the cement production in the most reliable way.
In one of Saudi Arabia’s largest cement plants UWT was confronted with especially harsh working conditions. For his cement silos the plant operator was looking after reliable contents measurement technology as well as after a flexible sensor system for level limit detection. The combination of a very high dust generation and an extremely high process temperature was a challenge for the right choice of instruments.
Thus the selection of measurement technology included first of all for the storage silos an electromechanical plumb bob that fits also perfect with the connection to a visualization system. Further for limit detection during several process steps rotating paddle switch and capacitive rod probe were installed. Here respectively the high temperature version was demanded.