Temperature compensated conductivity measurement from Foxboro
December 2018Analytical Instrumentation & Environmental Monitoring
Measuring the conductivity of a liquid can reveal the concentration of salts dissolved in the solution. In fact, conductivity is often the method of choice for measuring the amount of salts dissolved in water – the salinity of natural water. When seawater mixes with fresh water the conductivity measurement can tell how much of each is present, referred to this as the percentage or concentration of seawater.
Thousands of process control applications involve solutions of an electrolyte in water or other solvent. From a conductivity measurement it is possible to monitor and control such solutions. It is a fairly simple, fast and accurate method. When measuring conductivity and converting this into a percentage concentration, the instrument will have programmed into it a predetermined conductivity vs concentration curve.
Temperature dependence
However, the temperature of the sample liquid also needs to be taken into account. This is essential because the conductivity reading changes with temperature, so it is important to know if it is the temperature or conductivity of the process that is varying.
To solve this problem, Foxboro has introduced its new 876EC conductivity transmitter, in which a temperature compensated conductivity measurement is performed and the concentration calculated in accordance to the chemical periodic table against a range of specific chemicals with predetermined curves.
The displayed value is referred to as the compensated percentage of the chemical concentration range. Using the Foxboro 876EC, this is determined by simply measuring the conductivity value.
Supporting fast, safe helicopter service across Sweden ATEQ South Africa
Analytical Instrumentation & Environmental Monitoring
In an environment with high risks and fierce competition, Storm Heliworks’ fleet of eight helicopters operates on assignments throughout Scandinavia. Maintenance is critical, and the company recently invested in a battery charger analyser from ATEQ Aviation.
Read more...WearCheck introduces advanced Legionella testing to safeguard water quality Wearcheck
Analytical Instrumentation & Environmental Monitoring
WearCheck Water has expanded its expertise in water analysis with the introduction of Legionella pneumophila detection and enumeration. This positions the company at the forefront of water and surface safety monitoring, ensuring businesses, industries, and public institutions can proactively manage legionella contamination risks.
Read more...Silo weighing made easy - new mounting kit for load cells
Analytical Instrumentation & Environmental Monitoring
The PR 6003 mounting kit features fast commissioning in demanding applications in industrial silo weighing. It combines maximum accuracy with maximum safety in a compact system.
Read more...Smart weighing boosts Bayer’s automation
Analytical Instrumentation & Environmental Monitoring
he new supply centre of the agricultural chemical and pharmaceutical company Bayer in Hangzhou integrates weighing technology of Minebea Intec for precise mixing and homogenisation in Zone 2 hazardous areas.
Read more...WearCheck Water wins accreditation for microbiological testing Wearcheck
Analytical Instrumentation & Environmental Monitoring
WearCheck Water’s Johannesburg laboratory was recently awarded ISO/IEC17025 accreditation for Total Coliforms and E.coli Testing after a rigorous audit process, adding to the company’s extensive list of certifications, and reinforcing the laboratory’s adherence to national and international work quality standards.
Read more...Advancing process weighing and weighbridge automation
Analytical Instrumentation & Environmental Monitoring
Sasco Africa, a leader in industrial weighing solutions, is showcasing its latest innovations in process weighing and weighbridge automation.
Read more...Analysis solutions for total organic carbon
Analytical Instrumentation & Environmental Monitoring
Prepare for the future of water quality monitoring with Hach’s industry-leading total organic carbon (TOC) analysis solutions.
Read more...Liquid density analyser Sensoquad
Analytical Instrumentation & Environmental Monitoring
The SensoTech LiquiSonic system measures the density or concentration of a liquid by calculating using the sonic velocity to give output in real-time.
Read more...Oxygen measurement in beverages
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.
printer friendly version