January 2020Analytical Instrumentation & Environmental Monitoring
In order to monitor the process of reverse osmosis and ensure that deposits do not clog up membranes and reduce system efficiency, Martens, a member of the GHM Group, has joined the forces with its Condix 4623 digital 4-electrode conductivity converter and the GHM-ONE multi-function HMI controller.
The conductivity device detects whether the untreated water is unsuitable for operation in the system, whilst the multi-function device provides the measurements to the superordinate PLC via a Profinet fieldbus, where it is easily integrated by means of a GSDNL device description file.
Reverse osmosis does not only produce the permeate that is the filtered raw water, it also produces retentate, a concentrate that is unable to pass the membrane. It is an effect that can reduce the efficiency of the system and result in damage if the scaling effect of dissolved contents exceeds the solubility limit and deposits accumulate. An over-saturation of calcium carbonate must also be prevented.
In order to counteract both of these effects, an antiscalent is added to reduce the precipitation level and the water to be treated is adjusted to an acidic level in order to prevent oversaturation with calcium carbonate.
Jan Grobler, managing director of GHM Messtechnik South Africa says, “The pH value at this point is the measured variable for the correct dosing. The objective is to minimise the use of additives with maximum filter effect. The development of ammonia, which is toxic for fish, must be avoided. The concentration increases and decreases analogously to the prevailing pH value, therefore, the pH value is monitored in the process input and upstream from the discharge and conditioned as necessary.
“The combination of the Condix 4263 and the GHM-ONE multi-function controller offers a superior analysis technology specifically for process water monitoring in order to prevent membrane clogging and system under performance. Accurate analysis protects the material of the system from undesired deposits that require cleaning with the benefits of reduced downtime and increased productivity.”
The relevant results are visualised by the GHM-ONE, which is connected to the measuring probes via RS-485 (Modbus RTU) and the measured values can be read at any time on its display, so that conclusions can be made about the system status throughout the entire process cycle.
Meteorological data logger with up to 32 analogue sensors Senseca
Analytical Instrumentation & Environmental Monitoring
Senseca has introduced its advanced data acquisition system for environmental monitoring, which has a universal data logger for up to 32 analogue, pulse and smart digital sensors.
Read more...Cooling tower bleed control
Analytical Instrumentation & Environmental Monitoring
Cooling towers rely on evaporation to remove heat, but this process also concentrates dissolved solids in the system. Left unmanaged, this buildup can lead to scaling, corrosion and fouling, reducing efficiency and increasing maintenance costs.
Read more...Importance of gas analysis in the petrochemical industry Elemental Analytics
Analytical Instrumentation & Environmental Monitoring
Gas analysis plays a critical role in petrochemical operations, supporting process optimisation, product quality and plant safety. As an experienced and expert gas analysis supplier, Elemental Analytics can provide the correct analyser and sample system package to meet individual plant requirements.
Read more...Filters for zero-alcohol wine Parker Hannifin - Sales Company South Africa
Analytical Instrumentation & Environmental Monitoring
The market for zero-alcohol wine is creating fresh opportunities for wine producers, but processing these products creates new contamination challenges. Technical support from an established filtration specialist, such as Parker, can help wineries in overcoming the challenges posed by the increased risk of contamination.
Read more...Effective monitoring of solar panels for dust and debris Senseca
Electrical Power & Protection
To assist in the quick monitoring of solar panels for dirt, Senseca has introduced the Dust Fall Monitoring System, which alerts control centre operators at photovoltaic solar farms utilising solar panels when their panels need to be cleaned.
Read more...Remote monitoring solution for sewage plants ifm - South Africa
Analytical Instrumentation & Environmental Monitoring
With ifm’s remote monitoring solution, you can visualise the condition of the submersible pumps in your sewage plant and diagnose issues before they become serious problems.
Read more...Precision in every drop, powered by ICP technology Wearcheck
Analytical Instrumentation & Environmental Monitoring
Elemental profiling using Inductively Coupled Plasma – Optical Emission spectroscopy provides useful information on the chemical composition of lubricants.
Read more...A trusted oxygen analyser back in action Elemental Analytics
Analytical Instrumentation & Environmental Monitoring
After a period of discontinuation, Servomex’s Oxy 1810 oxygen analyser has officially returned.
Read more...Multi-channel pH and conductivity controller for the water sector Senseca
Analytical Instrumentation & Environmental Monitoring
The measurement of pH and conductivity plays an integral role in water systems. Senseca South Africa has introduced a multi-channel controller that allows the connection of up to five digital sensors and a frequency-emitting flow sensor.
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