All aggregates and bulk solids contain an amount of water. In addition to the quality of the final product, moisture also determines the weight and the price. The IMKO probe portfolio from Endress+Hauser presents a new generation of moisture sensors, suitable for use in a variety of industries.
The guided radar wave (in green in the image) propagates at approximately the speed of light. The sensor measures the material layer by layer discoidally and transverse to the sensor surface, as is familiar from a computer tomograph, for example.
This method results in a sensor with an exactly defined measurement field, which can measure without errors even in the event of fluctuating fine grains or varying grain size. By measuring transverse to the sensor surface, the mechanical condition of the sensor surface does not represent a disturbance variable, i.e., the recurring and unavoidable wear of the sensor surface does not falsify the measured value.
The defined measurement field also enables accurate measurement for applications in which the material coverage is too low or fluctuates. This results in a high degree of flexibility in terms of mechanical integration in the application.
Drying bulk solids in belt dryers
When drying bulk solids with belt dryers, an air-permeable belt is filled with the product to be dried. The height of the bulk solids on the belt and the dwell time in the dryer are defined based on the product type and properties, and the water volume to be removed. By adjusting the dwell time to the mean value, it is possible to compensate for varying moisture content. This is necessary in the production of wood pellets, for example, because the quality is no longer guaranteed if the material is excessively dry, and operating times are put at risk if the material is too moist.
Drying of bulk solids in vertical dryers
When grain is harvested, it usually contains excess water. If the grain is stored in a silo, this excess water would cause mould to form immediately, resulting in the total loss of the product. Therefore, all common grain types are dried before being stored in a silo, usually using a vertical dryer with product passing through it once (continuous dryer). The input moisture is measured to determine the water quantity to be removed, and the dwell time or throughput rate is controlled based on the known dryer performance. This not only ensures that the product does not go mouldy later in the silo, but also that energy is not wasted by over-drying the product.
The IMKO portfolio allows users to choose a suitable moisture sensor design for any application, always taking into account the framework conditions, such as moisture range, electrical conductivity, wear and mechanical installation.
Read more...PDS implementation on mines
Sensors & Transducers
Level 9 vehicle intervention for collision avoidance has been mandatory on South African mines since 2022, yet the effective roll-out of proximity detection systems remains slower than expected. This is not due to the technical limitations of integration but to operational readiness on site.
Read more...Monitoring analogue process values ifm - South Africa
Sensors & Transducers
Everywhere in industry, electronic sensors are used to detect process values such as temperature, pressure or flow. Process value monitoring often takes place directly in the sensor.
Read more...Ensuring clean and safe water Endress+Hauser South Africa
Editor's Choice Analytical Instrumentation & Environmental Monitoring
Endress+Hauser’s comprehensive range of disinfection sensors is designed to monitor and control disinfectant levels in water treatment processes.
Read more...Protecting buildings’ embodied carbon with retrofitted systems Schneider Electric South Africa
Sensors & Transducers
The World Economic Forum has said that around 80% of the buildings in existence will still be around in 2050; it is therefore essential that in order to combat climate change we retrofit them for energy efficiency.
Read more...Listening for damage to wind turbines
Sensors & Transducers
The Fraunhofer Institute for Integrated Circuits, working in concert with the Fraunhofer Institute for Wind Energy Systems, has developed a solution that can be used to identify cracks and breakage inside wind turbine blades remotely at an early stage.
Read more...Enhancing gold leaching efficiency Endress+Hauser South Africa
Sensors & Transducers
Endress+Hauser offers a range of advanced technologies designed to enhance the stability and accuracy of pH and dissolved oxygen measurements on gold processing plants.
Read more...Powering safer mining with PDS
Sensors & Transducers
With the mining industry under increasing pressure to prioritise safety without compromising productivity, Booyco Electronics is pushing the boundaries of Proximity Detection System and Collision Avoidance System technology across both underground and surface operations.
Read more...Elevating mining separation processes through precision instrumentation Endress+Hauser South Africa
Analytical Instrumentation & Environmental Monitoring
In mining operations, the quest for efficiency and productivity is key. There is an urgent need for innovative solutions to enhance the performance of extraction processes while balancing operational costs and environmental impact.
Read more...New uncompromisingly simple flowmeter line for processes Endress+Hauser South Africa
Flow Measurement & Control
The demand for simplicity in commissioning, operation and maintenance in industrial process plants has increased significantly in recent years. The new Proline 10 range of flowmeters from Endress+Hauser meets this requirement without compromise, because simplicity is the top priority.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version