August 2017Analytical Instrumentation & Environmental Monitoring
In order to measure conductivity across a wide measuring range using a single sensor, it is safe to say that that ‘four wins’. Only sensors with four electrodes deliver reliable measurement results spanning from low to high conductivity values.
In layman’s terms, sensors with four electrodes have two electrodes opposite one another to which an alternating voltage is applied. This ensures that positively and negatively charged ions are attracted to ions of the opposite charge, causing them to move toward each other. If the charge of the electrodes switches, the ions move back to where they started. A higher number of ions moving in a liquid results in higher conductivity.
But, if there are too many ions, they repel each other, thereby inhibiting movement to some extent, which distorts the conductivity measurement: the actual value would be higher than the measured value. This is called the polarisation effect. This is where the four-electrode measurement comes into its own. In such measurements, the two additional electrodes act as observers. These two conductivity measurement watchmen keep a close eye on the polarisation and report the deviation between the measured and actual values to the transmitter. Then, the corrected measured value is output from the transmitter, which thus compensates for the polarisation effect.
Biofilm monitoring system Instek Control
Analytical Instrumentation & Environmental Monitoring
Alvim, through Instek Controls, provides innovative, high-tech solutions for biofilm and biofouling monitoring in industrial plants.
Read more...WearCheck Water earns AdBlue/DEF analysis accreditation Wearcheck
Analytical Instrumentation & Environmental Monitoring
WearCheck Water recently became the first laboratory in Africa to be officially ISO17025 accredited to test AdBlue diesel exhaust fluid by the South African National Accreditation System.
Read more...Streamlining strain gauge load cell integration Vepac Electronics
Analytical Instrumentation & Environmental Monitoring
Vepac’s data acquisition hardware provides an efficient and effective all-in-one solution for customers looking to simplify, enhance and optimise their strain gauge load cell systems.
Read more...Oxygen measurement in beverages Anton Paar
Analytical Instrumentation & Environmental Monitoring
[Sponsored] Anton Paar offers a complete range of oxygen measurement instruments for total package oxygen (TPO) measurements, at-line quality control (QC), and in-process monitoring. These instruments help beverage manufacturers achieve accurate, reliable oxygen control at every stage of production.
Read more...Sensors and controls for food, beverage and pharmaceutical Instek Control
Analytical Instrumentation & Environmental Monitoring
Included in Instek Control’s range is Anderson-Negele, which has adopted ‘Hygienic By Design’ as its guiding principle, with a particular focus on meeting the stringent regulatory requirements found in industries such as dairy, brewery or pharmaceutical.
Read more...Vertical labelling of test tubes in clinical laboratories Omron Electronics
Analytical Instrumentation & Environmental Monitoring
Werfen has implemented a new automated machine for the supply of reagents to drug toxicology laboratories, built by MACCO in collaboration with OMRON and Marini Pandolfi. It uses OMRON SCARA robots and advanced vision systems to ensure reagent quality through vertical handling and labelling process of test tubes.
Read more...Keeping a close eye on product quality and purity Endress+Hauser South Africa
Analytical Instrumentation & Environmental Monitoring
Colour measurements are necessary in many processes to avoid product losses and ensure safe production and batching.
Read more...The importance of environmental monitoring and visibility at data centres Legrand
Analytical Instrumentation & Environmental Monitoring
Data centres are one of the most energy-intensive building types, consuming up to 50 times the energy per floor space compared to a typical commercial office building. With organisations embracing advanced technologies, data centres powering these technologies are under increasing pressure around the globe to increase capacities and improve efficiencies.
Read more...Analysers for use in high ambient temperature environments
Analytical Instrumentation & Environmental Monitoring
The 993X series of analysers from Ametek Process Industries are now IECEx Zone 2 certified for use in locations with up to 60°C ambient temperature. Built with IP66-rated enclosures and using an integrated cooling system, they can be installed outdoors or in minimally temperature-controlled enclosures, reducing complexity while lowering capital and operating costs.
Read more...WirelessHART solutions Endress+Hauser South Africa
Industrial Wireless
By combining its innovative product portfolio with a deep application and industry knowledge, Endress+Hauser enables its customers to optimise their processes, boost productivity, and ensure their safety and environmental compliance.