20 Water / Wastewater Contactless fl ow sensor for large pipes


NIVUS is expanding its range of clamp-on sensors to include another variant that works based on the ultrasonic transit time difference. Due to the measuring frequency of 500 kHz, these sensors are suitable for large pipe diameters or for pipe wall materials such as asbestos, cement, GRP or a multi- layer structure. The new sensors also excel in pipes with wall thicknesses of up to 30 mm. Compared to the 1 MHz version also offered, the new version can detect higher fl ow velocities even better. Another advantage is the increased acoustic penetrability through the fl uid. The signal is not so strongly attenuated, e.g. in the case of solids, gas bubbles or deposits on the inner wall of the pipe.


The clamp-on sensors are mounted on the pipe from the outside and measure without contact. This eliminates the need for drilling or similar mechanical stresses on the pipe. An interruption of the process for installation or maintenance is therefore also not necessary. In addition, this technology allows compliance with the highest hygiene standards due to the lack of contact with the measured medium. The high degree of protection of the sensors


according to IP68 enables their use even under the harshest conditions. For example, the sensors can be permanently buried in the ground with the help of suitable devices. Special polymer pads ensure a permanently reliable acoustic coupling between the sensor and the pipe.


Myron L Company 900 Series™ Monitor/Controllers


The innovative new 900 Series Monitor/Controllers include everything you need to simplify water quality management in industrial, municipal, and commercial operations in one compact user-intuitive instrument. Monitor 7 critical water quality parameters simultaneously from easily confi gured inputs: 2 Conductivity/Resistivity/TDS/Salinity; 1 pre-amplifi ed pH/ORP; 1 BNC pH/ORP; 1 0/4-20 mA; 1 RTD Temperature; and 1 Flow/Pulse.


% Rejection is available as a derived value. Outputs include up to 3 relays; 2 remote alarms; 1 0/4-20 mA; 1 0-10 VDC;


and 1 RS-485 ASCII Serial Output.


Flow Switch input can disable all relay outputs when triggered by loss of fl ow.


0/4-20 mA input allows user-defi ned 0 to full scale values and units of measure for a wide array of sensor types. Relays output to any user-supplied control equipment requiring up to 250V each and can trigger on any input parameter. 0/4-20 mA output can transmit a signal for any input parameter and can be set to power any instrument receiving signal if desired. 0-10 VDC can be scaled to optimize resolution and can output to a recorder, PLC, SCADA system, etc. Sensor maintenance is super easy with electronic or wet calibrations. Autoranging capabilities enhance reading resolution. More information online: ilmt.co/PL/L56Z


For More Info, email: email:


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For the use of the sensors, the measurement technology manufacturer offers permanent transmitters for classic installation in control cabinets or indoors. NIVUS GmbH also provides robust and battery-operated transmitters for temporary or permanent use in harsh environmental conditions. In combination with the NIVUS solar solution, it enables permanent measuring operation even at measurement places where there is no power supply. All systems allow for data access via an online measurement data portal.


Typical applications for the new clamp-on sensors are: drinking water pipelines with large nominal diameters or special pipe wall materials, corroded and incrusted pipelines, monitoring of water infl ows, monitoring of pressure pipelines, recording of turbine effi ciency or recording of cooling process water demand, as well as recirculation pipelines with a high solids content.


For More Info, email: email:


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57040pr@reply-direct.com


New standard addresses PFAS concentrations in water supplies


ASTM International’s water committee (D19) has approved a new standard that will help address global concerns about the concentration of polyfl uoroalkyl substances (PFAS) in water supplies.


According to ASTM International member William Lipps, the new standard required testing of nine complex wastewater matrices, each spiked in triplicate at three concentrations spanning the analytical range of the method.


“Very good precision and recovery obtained on all matrices, along with precision and recovery obtained on spiked reagent water, were used to calculate the quality control limits included in the method,” says Lipps. “These limits establish criteria that individual laboratories must meet before running samples and criteria that will be used to demonstrate performance of labs when running samples.”


This effort directly relates to the United Nations Sustainable Development Goals #6 on clean water and sanitation, as well as #13 on climate action and #14 on life below water.


Lipps notes the new standard will help to minimize water use in laboratories and help keep water clean by providing new methods for the analysis of trace contaminants in water.


“The smaller volumes required for this test are 25- 100 times less volume than a typical EPA method, reducing shipping weight and cooler size, resulting in a smaller carbon footprint,” says Lipps. “The minimal extraction, while using plastics, minimizes their use compared to other PFAS methods; in this method, the sample is extracted in the same vial in which it was sampled.”


Lipps says that all interested parties are invited to join in the interlaboratory study now being planned for the new standard, which will soon be published as D8421.


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


AET ANNUAL BUYERS’ GUIDE 2022


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