oxygen sensors Articles

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What is added value?

by Analox Sensor Technology  (Mar. 3, 2015)

We’ve probably all heard people referring to their “value added” service or product. Some of us have probably said it to our customers but what exactly does it mean? The UK supermarket Kwik Save launched a budget brand in the 1990s called “No Frills”. I believe they were the first to do this on a large scale and it ...

Effect of sensor location on controller performance in a wastewater treatment plant

by IWA Publishing  (Mar. 16, 2015)

Complete mixing is hard to achieve in large bioreactors in wastewater treatment plants. This often leads to a non-uniform distribution of components such as dissolved oxygen and, hence, the process rates depend on them. Furthermore, when these components are used as input for a controller, the location of the sensor can potentially affect the ...

Long Lasting Safety with PureAire Monitoring Systems’ 10+ year sensors

by PureAire Monitoring Systems, Inc  (Jul. 21, 2014)

When it comes to oxygen deficiency monitors, PureAire makes the longest lasting units on the market. They believe your safety should not be taken lightly, and have created a reliable and affordable monitor that will outlast all of their competitors. PureAire Monitoring Systems has broken away from the norm of using disposable sensor cells, and has ...

Factors affecting the performance of a single-chamber microbial fuel cell-type biological oxygen demand sensor

by IWA Publishing  (Nov. 13, 2013)

Microbial fuel cells (MFCs) are devices that exploit microorganisms as biocatalysts to degrade organic matter or sludge present in wastewater (WW), and thereby generate electricity. We developed a simple, low-cost single-chamber microbial fuel cell (SCMFC)-type biochemical oxygen demand (BOD) sensor using carbon felt (anode) and activated ...

PureAire Combines Oxygen and CO2 Sensors to provide a Dual Gas Monitor to the Marketplace

by PureAire Monitoring Systems, Inc  (Apr. 30, 2013)

As a recognized leader in O2 safety monitoring, PureAire recently explored the need for an O2 monitor where carbon dioxide is used. There are four key cryogenic gases; nitrogen, helium, argon, and carbon dioxide (CO2), which can create an oxygen deficient atmosphere. Material Safety Data Sheets (MSDS) covering cryogenic gases cite that a cryogenic ...

Application of nanocrystalline metal oxide gas sensors for air quality monitoring

by Inderscience Publishers  (Apr. 21, 2014)

Increasing concern regarding health effects caused by air pollution, together with the limited spatial resolution achievable with conventional monitoring stations, have driven efforts to develop inexpensive metal oxide gas sensors for air quality measurements. The sensing mechanism is dependent on physicochemical reactions between adsorbed gas ...

Accuracy of different sensors for the estimation of pollutant concentrations (total suspended solids, total and dissolved chemical oxygen demand) in wastewater and stormwater

by IWA Publishing  (Jul. 19, 2013)

Many field investigations have used continuous sensors (turbidimeters and/or ultraviolet (UV)-visible spectrophotometers) to estimate with a short time step pollutant concentrations in sewer systems. Few, if any, publications compare the performance of various sensors for the same set of samples. Different surrogate sensors (turbidity sensors, ...

Oxygen Monitors for the New Millennium

by PureAire Monitoring Systems, Inc  (Mar. 8, 2013)

Oxygen monitors have become a required piece of safety equipment for many industrial and laboratory environments, where the release of certain toxics can create an area unsafe for living beings (human or animal).  When making a purchasing decision on any oxygen detection monitor, one need look no further than the sensor cell found at the ...

Electrochemical Sensors for Specific Gas PPM Monitoring

by Control Instruments Corporation  (Oct. 5, 2013)

Echem sensors are able to read a specific gas even when it is mixed in a background of other gases. Echem sensors are typically used to read very low PPM concentrations of toxic gases. The Echem sensor consists of a small cell holding an electrolytic solution. This solution needs a specific gas in order to produce an electrical signal. When the ...

Dissolved Oxygen – the discussion moves on

by Partech (Electronics) Ltd.  (Apr. 27, 2012)

Do Dissolved Oxygen Sensors need Cleaning? The re-emergence of Optical Dissolved Oxygen Sensors around 6-7 years ago generated a lively and interesting discussion which revolved around the relative merits of Optical and Galvanic Dissolved Oxygen sensors. We understand that opinions will differ, so in order to accommodate our customers preferences ...

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