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.
Ensuring occupational health and safety in mining
Analytical Instrumentation & Environmental Monitoring
Probe Integrated Mining Technologies (Probe IMT) has partnered with M3SH Technology to offer state-of-the-art environmental monitoring solutions that address these dual requirements.
Read more...Sustainability of surface water Endress+Hauser South Africa
Analytical Instrumentation & Environmental Monitoring
The sustainability of surface water is critical for South Africa’s economic development, social well-being and environmental health. Endress+Hauser has a full range of liquid analysis sensors and transmitters to measure important parameters and has an excellent global track record in water and wastewater process plants and various surface and industrial water monitoring sites.
Read more...Keeping an eye on invisible radiation Omniflex Remote Monitoring Specialists
Analytical Instrumentation & Environmental Monitoring
At its peak in 1994, the energy generation capacity of the UK’s nuclear power stations was 12,7 GW across 16 plants. In 2024, the capacity has fallen to around 5 GW, and the number of stations is down to nine. However, this is far from the end of the story as spent nuclear fuel remains radioactive for centuries, and requires rigorous safety processes to safeguard against leaks.
Read more...Effective dust control in sugar processing
Analytical Instrumentation & Environmental Monitoring
BLT WORLD specialists work in conjunction with the global ScrapeTec team to offer dependable solutions for specific problems at the transfer points of conveyor systems in many industries where dust and material spillage are concerns, including the sugar sector.
Read more...A benchmark for lubricant reliability in mining
Analytical Instrumentation & Environmental Monitoring
According to Craig FitzGerald from ISO-Reliability Partners, mines can save R500 000 or more on their yearly mill cleaning costs, while electricity consumption can be reduced by up to 12%, and lubricant consumption lowered up by up to 60% when using Bel-Ray Clear Gear lubricant.
Read more...Safeguarding precision in industrial radiometric measurements Mecosa
Analytical Instrumentation & Environmental Monitoring
In the complex landscape of industrial plant operations, precision is paramount, especially when it comes to weld inspections to test for structural integrity of pipes. Berthold has the ideal answer to this challenge – X-Ray Interference Protection.
Read more...New indoor air quality monitor RS South Africa
Analytical Instrumentation & Environmental Monitoring
RS South Africa has available a new indoor air quality (IAQ) monitor that provides continuous, easy-to-read, and accurate real-time monitoring of air quality in indoor environments.
Read more...A quick guide to disinfection Endress+Hauser South Africa
Analytical Instrumentation & Environmental Monitoring
The distribution system in a drinking water network provides a reliable supply of high-quality water to consumers. Endress+Hauser’s range of robust, low-maintenance sensors are ideal for monitoring disinfectant levels in the water.
Read more...Optimising energy consumption in the chemical industry Anton Paar
Analytical Instrumentation & Environmental Monitoring
To optimise energy consumption and save valuable resources on chemical process plants, operators have to continuously measure parameters such as concentration, raw density, sound velocity and refractive index. With Anton Paar’s wide product range, the process application team has many options for cutting-edge laboratory measurement technologies, and can develop tailor-made mathematical models for every application.