optical monitoring equipment Articles

  • A Remote Automated Optical Field Sampling System based on the UniSpec-DC equipped with a Wireless System

    For remote locations, a reliable and repeatable field sampling method is needed for monitoring ecosystem processes for various scientific reasons (e.g. ground truthing, link vegetation indices to ecophysiological variables) (Claudio et al., in press; Fuentes et al., in press, Cheng et al., in press). To ensure that the data are collected continuously, and to collect the data during severe weather ...


    By PP Systems

  • Assessment of detection limits of fiber-optic distributed temperature sensing for detection of illicit connections

    Distributed temperature sensing (DTS) with fiber-optic cables is a powerful tool to detect illicit connections in storm sewer systems. High-frequency temperature measurements along the in-sewer cable create a detailed representation of temperature anomalies due to illicit discharges. The detection limits of the monitoring equipment itself are well-known, but there is little information available ...


    By IWA Publishing

  • Ping-Ping, What’s That Sound? Acoustic Fiber Optic Technology Helps Identify Problematic Water Mains

    With the deteriorating state of many aging water mains found in cities across North America, urbanites are frequently witnessing unexpected plumes of water erupt as man-made geysers in their own metropolitan backyards. While natural geysers are awe inspiring, urban geysers are much less so, due to their destruction to property, roads and the environment. Because an uninterrupted water flow is the ...


    By Pure Technologies

  • DNAPL Source Zone Green & Sustainable Remediation Optics Manufacturing Facility Lebanon, New Hampshire case study

    Project Highlights ERDENHANCED Remediated >99% cVOC source zone [TCE] 100,000 to < 1 μg/L ERDENHANCED Realized Complete Biotransformation with no evidence of rebound ERDENHANCED Provides Multi- Year Sustainability after single deployment event. ERDENHANCED Minimizes Site, Monitoring, and Overall Remediation Costs, saving Client dollars. ...

  • Monitoring of soil fertility

    Background In agriculture and forestry soil fertility is a decisive factor for the economic use of fields and forests. Various factors, considered as a whole are the indicators which characterize the soil fertility. Important parameters are e.g.: Intensity of precipitation, air temperature, air humidity, soil humidity, suction power and soil temperature in various depths. ...

  • Innovative emissions monitoring uptake soars

    Firms in the UK’s waste and power sectors are proactively seeking Best Available Techniques for emissions monitoring, according to Enviro Technology. Over recent months there has been a surge in demand for sophisticated equipment, such as monitors of total gaseous mercury. The air quality and emissions monitoring specialist believes that a combination of factors, such as the recast ...

  • Sediment Spill Monitoring from Dredging, using the SediMeter

    Strategies for sediment spill monitoring and siltation measurements. The SediMeter allows a gradual increase in the equipment investment as conditions merit, from a single stand-alone logger, to a real-time monitoring network in which all previously purchased equipment can be included. Sediment spill causing siltation gives rise to two separate environmental problems: A suspended sediment plume ...


    By Lindorm, Inc.

  • New laser-based dust emission monitoring system

    Abstract A new generation of continuous particulate matter concentration monitoring instruments is presented, covering a measuring range of 0 to 1000 mg/m3. The laser-based scattered light instrument gives an improved stability as well as excellent resolution in the low range. This enables high concentration measurement as well as especially low emission monitoring down to 0.01 mg/m3 with a ...


    By Sigrist-Photometer AG

  • In-situ quality monitoring station in Lower Saxony

    Background 'Duemmer' is a shallow lake in the south-west of Lower Saxony; through the lake flows the river 'Hunte'. The catchment area spans 426 km2. With a surface of 12.4 km2 and an average depth of 1.1 m there is a water volume of approx. 14 million m3. Large parts of the lakeside are a nature reserve and the lake is a popular local recreation area. The lake suffers from strong nutrient ...

  • Final effluent monitors protect wastewater treatment efficiency

    Southern Water operates 370 wastewater treatment plants (WWTP), many of which are unmanned for most of the time and most have numeric environmental permits, so a network of online monitors has been established to improve treatment and protect discharge compliance. This has involved the installation of final effluent monitors at over 300 sites in a programme that has lasted for more than ten ...


  • The challenges and benefits of local air quality monitoring

    A new generation of air quality monitors is now being offered to provide localised, real-time air quality readings – but the potential benefit is only just starting to be realised. It is generally accepted that whilst measurements from air quality reference stations are highly accurate, they are not sufficiently location-specific. Key pollutants – such as NO2 and PM2.5 ...


    By AQMesh

  • ELITe InGenius a new Molecular Diagnostics Sample-to-Result solution and first fully automated sample-to-result solution introduced with transplant monitoring menu

    ELITe InGenius is an integrated sample to-result solution dedicated to Molecular Diagnostics which automatically performs extraction, amplification and result interpretation with an unprecedented flexibility and assay menu possibility. The system combines a universal extraction process in unitary cartridge with individual and independently controlled RT PCR in cassette based format enabling the ...


    By ELITech Group

  • Ocean outfall plume characterization using an autonomous underwater vehicle

    A monitoring mission to map and characterize the Point Loma Ocean Outfall (PLOO) wastewater plume using an Autonomous Underwater Vehicle (AUV) was performed on 3 March 2011. The mobility of an AUV provides a significant advantage in surveying discharge plumes over traditional cast-based methods, and when combined with optical and oceanographic sensors, provides a capability for both detecting ...


    By IWA Publishing

  • Distributed Thermal-Acoustic Data Integration

    Silixa has developed a technique called Distributed Thermal Acoustics (DTA) to monitor simultaneously the thermal and acoustic profile along a hybrid optical fibre cable in submarine environments. Using its world leading distributed fibre optic technology (ULTIMATM DTS and iDASTM) Silixa deployed an optical fibre cable along the seabed and across the water column in an active gas seepage ...


    By Silixa Ltd

  • Smart LDAR — more cost-effective?

    On December 19, 2008, EPA issued a final rule establishing a voluntary Alternative Work Practice (AWP) to detect leaks of volatile organic compounds (VOC) and hazardous air pollutants (HAP) from process equipment (FR Vol. 73, Number 246), thereby providing the regulated community additional flexibility in complying with leak detection and repair (LDAR) requirements. The AWP allows owners or ...


    By Trinity Consultants

  • IR Gas Detector Provides Rapid Response

    The advanced Model IR400 Point IR Combustible Gas Detector from General Monitors features an industry-leading three-second T90 response time to the presence of combustible hydrocarbon-based gases, which allows plant operators to respond quickly to gas leaks and ...


    By General Monitors

  • On-Line Nitrate/Nitrite Probes for BNR Process Control

    ABSTRACTReal time nitrogen monitoring plays an increasingly important role for the successful biological nutrient removal at wastewater treatment plants. Though traditionally dissolved oxygen has been the main process control parameter a greater understanding of the biological mechanisms and process conditions like nitrite/nitrate concentrations to achieve lower effluent values becomes necessary, ...

  • Ensuring safe drinking water case study

    Challenge: A state environmental agency contracted with Antea Group to assist in the execution of a state-wide clean drinking water program. Program objectives included the development of an efficient and standardized program to monitor for chemical and biological contaminants across more than 6,500 public water systems. ...


    By Antea Group - USA

  • Advanced Water Quality Techniques Course

    Abstract:The development of a strategic water quality monitoring program is based on prioritizing risks to public safety and economic reality. The development of global standardized methods and protocols for automated water quality monitoring would facilitate international communication of water quality information and comparison of standardized methods and protocols. The three primary methods ...


  • Case study - Baltimore City public works intervenes on pipe section about to fail

    Service: SoundPrint AFO Client: Baltimore City Project Date: 2012 Location: Baltimore, MD Type of Pipeline: Water Transmission Main Diameter: 54-inch (1350mm) Pipe Material: PCCP Baltimore City features 130 miles of Prestressed Concrete Cylinder Pipe (PCCP), 15 percent of which is Class IV PCCP installed in the 1970s. This particular class of pipe has been prone to early ...


    By Pure Technologies

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