With its high turndown and direct mass flow, our immersible thermal meters are the instrument of choice for measuring aeration basin air flow and monitoring digester gas. Our multivariable vortex meters are used to measure steam in the cogeneration processes, while our ultrasonic flowmetersare used for influent and effluent measurement.
The environmental field requires robust, high-sensitivity analysis capable of complying with regulations in order to always meet the stringent target values that have been established to assure the safety of the water supply and protect the environment. Moreover, in laboratories where more than 100 samples are processed per day, increasing the throughput and saving energy are issues of concern.
For over 40 years Sierra has advanced our flow technology to offer customers around the globe the most cutting-edge thermal technology on the market. From heavy industrial to research and analytical applications, Sierra has a wide range of digital air flow meters and controllers with digital output protocols for easy network integration. Sierra offers digital gas flow meters and mass flow meters across two core technologies: Capillary Thermal, and Immersible Thermal. Buy a large selection our air flow meter...
Where the pyrheliometer is most suitable to quantify the total DNI of the solar spectrum. The spectroradiometer gives details about the energy distribution which is important for PV or CPV cell research. The solar spectrum wil change with the angle of incidence and its path through the atmosphere. Photons wil be reflected, scattered or absorbed. Big absorbers of infrared irradiance are water vapor, carbon dioxide, and ozon.
Surface water monitoring as an application covers many different environments and can require different equipment depending on the monitoring requirements. Possible environments include lakes, rivers and coastal waters where the monitoring may be focused on water quality or water level measurement. Aquaread offer instruments suitable for each of these environments and have a wide range of possibilities depending on the kind of data you wish to collect.
Solar Direct Normal Irradiance (DNI) represents the direct solar component and contains about 80% of the total solar energy budget on earth. Outside the atmosphere (AM0) the solar irradiance is considdered as a constant (1367 W/m2) that slightly fluctuates with a 11 year cycle. The DNI at the earth surface is highly variable due to the atmospheric conditions (clouds, aerosols, water vapor and molecules).
Nitric acid HNO3 is an important intermediate reagent for production of several important end products, such as fertilizers, explosives, dyestuffs/pigments, pesticides, pharmaceuticals, photographic materials, plastics, and synthetic fibers. At nitric acid manufacturing plants, the Gasmet™ FTIR Gas Analyzer can be used to measure several gaseous components from the process stream for purposes of process control. A single system can be used to measure the high levels of nitrogen monoxide NO and nitrogen...
Water resource management refers to the conservation, custody and transport monitoring of water as a natural resource. Measurements are made to quantify water for the purpose of protection, forecasting, management, lawmaking, enforcement, policymaking, resource allocation and public reporting. Stevens has been providing quality products for water management for over 100 years.
Increase your efficiency and ensure compliance with an experienced and trusted partner. Legal demands, shrinking budgets and increasing process complexity: the challenges faced by the water & wastewater industry have never been greater. To master these challenges you need a partner who combines extensive industry knowledge and experience with an entire portfolio of measuring instruments, solutions and services.
Process water is one of the most challenging for analysis instrumentation. Mostly this water is characterized by a certain purity, fluctuating loads, as well as very high salt concentrations. Since any disturbance in water-circuits can lead to an entire plant shutdown, resulting in huge costs, reliable and fast online water analyzers are an essential. Due to the diverse demands of various measurement challenges, application-specific analyzers provide huge advantages against standard analyzers that are used for...
Waste water, especially industrial waste water, is the most challenging water for instrumentation. Mostly, this water is characterized by highly fluctuating loads, very high salt concentrations as well as a high particle density. Hence, the accurancy and speed of measurements depends on the measurement system itself and the oxidation technique used. Obviously, application-specific analyzers provide huge advantages against standard analyzers that are used for all applications.
An Ontario municipality deploys Portable flowmeters to solve flow rate discrepancies between sewage pump station effluent and lagoon influent flowmeters. Faced with suspension of construction permits due to flow rate uncertainty, the Township of North Glengarry called on Greyline Instruments to help troubleshoot two permanently installed flow meters.
Measurement of water quality in coastal regions and estuaries is critical in the characterization of hypoxic ‘dead zones’ as a result of nutrient loading and algal blooms in the water bodies. Sediment loading analysis through turbidity measurement is also important for coastal trend identification and modeling. Hydrolab and Sea-bird Coastal offer a variety of multiparameter water quality instrumentation and nutrient sensors for long-term coastal applications.
In accordance with WHO’s Guidelines for Drinking Water Quality there is no health-based guideline value of zinc in water concentration. Concentration of zinc in tap water can increase as a result of its dissolution from pipes. Also, elevated levels of zinc may be an indicator of increased concentrations of other toxic metals; thereby zinc in water analysis is an essential analytical task.
Lumex Instruments provides sensitive and selective fluorimetric method for the measurement of mass concentration of zinc in...
Aluminium is the most abundant metallic element and its salts are widely used as a coagulation treatment agent. At the same time increased levels of aluminium may lead to renal diseases and cause undesirable color and turbidity of distributed water.
There are practicable levels of aluminium in water based on optimization of the coagulation process at drinking-water plants: 0.1 mg/L or less for large water-treatment facilities and 0.2 mg/L or less for small.
Lumex Instruments provides accurate and selective...
Anionic surfactants (A-SAS) represent, by volume, the most important group of surfactants used in cleaning products and the oldest and the largest volume anionic surfactant is soap. In concentrations 0.1 ~ 1.0 mg/L A-SAS become toxic for aquatic environment.
Lumex Instruments provides sensitive and selective fluorimetric method for the measurement of mass concentration of anionic surfactants in water samples using the FLUORAT-02 analyzer.
The method became the Interstate standard for anionic surfactant in water...
Accurate and traceable measurements of atmospheric gases are essential for understanding our changing environment, and the formulation, implementation, and evaluation of climate change mitigation strategies in response to rising concentrations of greenhouse gases and resulting global warming. In addition to concentration measurements for background measurements, and source monitoring and quantification, isotopic measurements allow the attribution of emissions sources, as well as tracing the natural cycles of...
Groundwater hydrology is an interpretive science: we can’t observe the aquifers directly so we must interpolate and extrapolate our understanding from water-level measurements taken from observation wells. Stevens has expertise for measuring both water quantity and water quality.
Measurement of greenhouse gases released from soil and water surface forms an important part of climate change study. Microbial activity in the soil or for instance the melting of permafrost releases greenhouse gases such as Methane and nitrous oxide N2O into the atmosphere. Measurement of the concentration for these gases inside an open-bottom soil chamber placed on the soil over time tells the emission rate (flux) per chamber footprint area.