20 Water / Wastewater


A simple and effective solution to chlorine generation Chlorine (Cl2


) has always been a diffi cult gas to handle when using traditional gas cylinders. It is very reactive and problematic in terms of accuracy and its erratic shelf life. This has made life diffi cult for personnel working across a wide range of industries, such as in the water treatment sector.


With this in mind, Euro-Gas designed and developed their GazCal Gas Generator, which is now an indispensable tool for people working with chlorine gas. Engineers within the water industry fi nd this rugged, portable and battery-operated tool ideal for testing and calibration, both in the lab and in the plant. The GazCal comes in a robust and compact carrying case and enables rapid testing and calibration with negligible warm-up time. This simple to use device can be operated by anyone! Simply set the necessary PPM level via the unit’s dial-up digital display and it is ready for action. The Gazcal generates Cl2 a surrogate for the cross-calibration of O3


levels ranging from 0.5 – 20 ppm and is also suited to act as , Cl O2 , COCl2 , HF and F2 .


Euro-Gas have designed the GazCal to overcome the usual problems of a low shelf life. Cell life is only used up when the unit is in operation, whilst traditional cylinders can simply die out after up to 6 months. The generator can therefore last for up to a decade, often without the necessity to change the cell and needing only a yearly recertifi cation of calibration, which can be carried out by Euro-Gas or qualifi ed technicians at the site.


The GazCal cell has a lifetime of 500ppm hours, equating to 100 hours of constant use at a 5ppm concentration level, which enables a minimum of 400 individual calibrations. Operators can see the life span of the generating cell on the unit’s cell life indicator. Once the cell is used up, a new generating cell can be installed easily. Depending on the level of experience that the engineer has with gas detection calibration, regular small gas cylinders will usually only perform around 5 – 10 calibrations per cylinder. The GazCal may initially be more costly than a small cylinder but in the longer term, the generator will be far more economical.


Moreover, gas cylinders only attain one specifi c concentration per cylinder purchased, say for instance 5ppm of Cl2


levels, whereas it is extremely problematic to achieve cylinder stability at low concentration levels. More information online: ilmt.co/PL/3vOB


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51266pr@reply-direct.com More than just custom solutions for pressure measurement


The Keller standard product catalogue covers most areas of application for pressure measurement technology. However, there are often great benefi ts to optimising pressure sensors specifi cally for use and integration into higher-level complete systems. Keller’s modular product design offers great fl exibility and allows customer-specifi c adaptations to be made without causing soaring costs – even for small production runs.


sales@lovibond.com • www.lovibond.com


Keller has been carrying out countless challenging projects in the fi eld of piezoresistive pressure measurement technology for almost 50 years. Even applications that may appear trivial at fi rst glance can prove highly complex upon closer analysis. By taking the actual usage conditions of the sensor into consideration right from the outset, one can achieve major improvements in effectiveness and durability. A mutual exchange of expertise with their customers is therefore central to Keller’s success. Sharing knowledge is what enables Keller to fi nd the best sensor solution. Keller work on a six-stage plan to create the ideal customer specifi c solution. The initial stage is to defi ne basic sensor specifi cations in order to select the appropriate components and then to assess the environmental conditions to determine the appropriate design for the intended location. Having covered the groundwork Keller then design the requested customer-specifi c solution taking all standards and laws into account, assemble the electronic modules, taking into account application- specifi c customer requests and confi gure electrical interfaces and connections. Finally, Keller will customise the product’s labelling using laser engraving or labels The «Custom Solutions» product category on the Keller website now features everything you need to know about the possibilities and requirements for customer-specifi c product solutions involving pressure measurement technology.


UV-VIS Spectrophotometer for water analysis


Simplify your work! Save time & money!


More information online: ilmt.co/PL/AoDZ For More Info, email:


Monitoring dissolved oxygen


QUALITY Made in GERMANY


XD7500 & XD7000 Integrated economic solution


Premium optical system with reference beam


Automatic test recognition with internal barcode reader


Automatic cuvette type detection Lovibond®Water Testing xd_hoch_155x210_en_0222.indd 1 IET MARCH / APRIL 2022 Available in 10 languages! 01.02.22 10:52


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More than 150 analytical methods implemented


Bright colour display Interfaces: Ethernet, USB


in high-pressure boiler systems Dissolved Oxygen (DO), the primary corrosive agent of steam-generating systems, is one of the most important water quality parameters to control in a boiler system. Improper water quality management can thus result in ineffi ciency, costly repairs, and downtime. Operators of high-pressure boilers try to eliminate DO entirely from feedwater through the rather economical technique of mechanical deaeration, a process that may be supplemented with chemical treatment using oxygen scavengers. DO levels are monitored routinely to confi rm suffi cient removal of DO within the system.


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Probes and online analyzers offer continuous DO measurement but require routine calibration of sensors. Portable colorimetric test kits such as those offered by CHEMetrics are also routinely used in boiler applications. CHEMetrics kits feature the convenience of “snap and read” self-fi lling ampoules and offer plant operators a rapid, reliable, maintenance-free means of determining ppb levels of DO within one minute. Over the course of 50+ years, CHEMetrics has earned a reputation for providing quality DO tests to this marketplace.


More information online: ilmt.co/PL/y9nB For More Info, email:


0.1ppm steps. Therefore, the Gazcal produces many different concentration levels from one device. In addition, low concentrations of Cl2


, whereas the GazCal is totally adjustable between the 0.5ppm to 20.0ppm range and in are effi ciently produced with the GazCal, even 1ppm and 2ppm


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