April 2009Analytical Instrumentation & Environmental Monitoring
ISEmax ion-selective measuring system.
Endress+Hauser’s new ISEmax CAS40 system for measuring ammonium and nitrate is based on potentiometric measurement with ion-selective electrodes.
Potentiometric measurement uses ion-selective electrodes similar to pH measurement. As a result of charged ions migrating, a potential difference occurs between the measuring electrode and the reference electrode. This difference in potential is measured and is proportional to the ion concentration. It makes the processes of nitrification and de-nitrification transparent particularly in the area of wastewater treatment.
The sensor consists of ion-selective electrodes and a reference electrode
ISEmax measures the concentration of ammonium and nitrate quickly and continuously in municipal wastewater treatment plants. The robust in-situ measurement allows measuring several parameters simultaneously with one sensor. A distinguishing feature of ISEmax is its short response time. Since ISEmax is immersed directly into the measuring solution, the measuring system responds very quickly to changes in the concentration. The rapid trend display supports the early control and regulation of the processes.
Typical applications in municipal wastewater treatment plants include measuring the concentration of ammonium and nitrate directly during sludge activation, measuring the ammonium (pH-compensated) load in the inlet to sludge activation, and load-dependent aeration control.
The compact measuring system contains a sensor and a transmitter. The sensor consists of ion-selective electrodes, a reference electrode, potential matching, a temperature sensor as well as automatic compressed-air cleaning nozzle and a pre-amplifier. The sensor is mounted directly on the basin rim with a suitable retaining unit and is immersed directly into the process with the electrodes. Up to three ion-selective electrodes simultaneously measure ammonium, nitrate and with potassium or chloride compensation, if required by the customer.
The ISEmax membrane caps which are selective for the ions to be measured are easily replaceable. A membrane kit with easy-to-use replacement caps is also available as an accessory. The membranes are robust and can be used for up to six months. Due to the integrated compressed-air cleaning system, they are kept free from fouling and contamination and are thus always operational.
ISEmax encompasses a large measuring range:
* Ammonium-nitrogen: 0,1-1000 mg/l NH4-N.
* Nitrate-nitrogen: 0,1-1000 mg/l NO3-N.
The unit is easy to use: the measuring system does not use any chemicals, is low-maintenance and does not require external sampling. Furthermore, integrated automatic compressed-air cleaning prevents the membranes from fouling. Thus reducing the costs for power used in the aeration systems.
This new technology extends Endress+Hauser’s liquid analysis portfolio. It strengthens the company’s position as a complete provider and offers potential for other parameters and industries.
Inspiration for times of change Endress+Hauser South Africa
News
More than 2000 customers, partners and experts gathered in Basel, Switzerland, for the Endress+Hauser Global Forum in April 2026. Under the theme of driving sustainable transformation together, the event combined keynote sessions on strategy, technology and the future of work with practical case studies from across the process industry.
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...Optimise sludge treatment and reduce operational costs Endress+Hauser South Africa
Sensors & Transducers
Endress+Hauser’s inline measuring devices, the Proline Teqwave MW 300 and the Proline Teqwave MW 500, determine the total solids content of wastewater directly through microwave transmission.
Read more...Fully integrated standalone thunderstorm warning system Senseca
Sensors & Transducers Analytical Instrumentation & Environmental Monitoring
Senseca South Africa has introduced its BTD-1 fully integrated, standalone thunderstorm warning system, which detects lightning by monitoring the background quasi-electrostatic field. The system can generate alerts before the first lightning strike, with a detection raterange of up to 83 km.
Read more...Environmental monitoring with testo Saveris 1
Analytical Instrumentation & Environmental Monitoring
The testo Saveris 1 environmental monitoring system has been in continuous use since 2010 at Jungbunzlauer, a biotechnology company in Germany, providing seamless temperature and humidity data for audit-ready, GxP-compliant processes across laboratories, warehouses and production areas.
Read more...Reliability restored through systemic vibration analysis Wearcheck
Analytical Instrumentation & Environmental Monitoring
Condition monitoring specialist, WearCheck uses a variety of testing techniques to enhance reliability in machinery components and prevent failures.
Read more...Level measurement for hygienic applications Endress+Hauser South Africa
Level Measurement & Control
Endress+Hauser’s Liquiphant is considered to be the most reliable and safe point level detector in industrial plants. The latest generation of devices is ready for Industry 4.0 and, with the Liquiphant FTL63, is ideally suited for applications with hygienic requirements.
Read more...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...Yokogawa’s free chlorine analyser is gold standard for water treatment utilities Yokogawa South Africa
Analytical Instrumentation & Environmental Monitoring
One of the key factors in ensuring safe drinking water is the accurate monitoring of free chlorine residuals. This is where advanced online analysers, such as Yokogawa’s FC800 free chlorine analyser, are becoming increasingly valuable for water treatment operators and municipal utilities.
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.
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