Gas Sensors Applications

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  • Category: Monitoring & Testing ×

  • Subcategory: Gas Sensors ×

Large pipes & ducts, hot tapping, purging flow solutions

by Sierra Instruments, Inc.     based in Monterey, CALIFORNIA (USA)

The measurement of gas flow in large ducts or pipes offers its own set of challenges. Large ducts and pipes often have swirls or turbulence in them which makes measurement of true gas flow difficult. Sierra has developed a number of solutions to this vexing problem, including stand-alone flow conditioning elements and multiple arrays of thermal sensors. By including hot taps and purging systems, such arrays can be very flexible.

Choose high accuracy gas flowmeter for increased precision and profitability

by Sierra Instruments, Inc.     based in Monterey, CALIFORNIA (USA)

Sierra designs and manufactures a wide range of today’s most advanced analog and digital gas flowmeters and controllers, including a high-pressure gas flowmeter. For gas mixing and blending applications, accuracy and precision control and measurement are always a central requirement. Sierra’s precise flow meters and controls provide end-users with high performance in gas mixing and blending applications like creating artificial atmospheres, gas mixing in manufacturing, inerting and gas chromatography.

Perimeter Monitoring and Area Monitoring

by Boreal Laser Inc.     based in Edmonton, ALBERTA (CANADA)

GasFinder2 can be permanently installed to monitor chemical and petroleum plants for both combustible and toxic gases. GasFinder2 can be used to replace arrays of point sensors for perimeter monitoring. A single light path will replace many point sensors. With GasFinder2 perimeter monitoring, all gas dispersed from a facility is detected and logged.

Methane Sensing for Coal Mining

by Edinburgh Instruments Ltd     based in Livingston, UNITED KINGDOM

Application: The majority (around 60%) of the coal seams currently being extracted worldwide are so far underground that open cast mining cannot take place and, therefore, underground mining techniques need to be used. Consequently, workers have to enter and work in confined spaces. One of the major problems that this creates is the dangers from Methane (CH4) gas which occurs in Mine gas.

Gas Detection Solutions for GHG Monitoring

by Boreal Laser Inc.     based in Edmonton, ALBERTA (CANADA)

Most sources of fugitive emissions are from multiple points rather than single point sources. So, open path area or perimeter monitoring provides more meaningful fugitive emissions data than an array of point sensors or a program of grab sampling. Point measurements may underestimate emissions because of missing locations with high gas concentrations, or conversely overestimate because they are located in areas of high concentrations. Grab sampling programs typically check only a small percentage of potential leak locations and extrapolate results to an entire facility. Wide margins of uncertainty are associated with such extrapolations. Open path monitoring provides continuously updated, real-time, integrated emissions across a facility boundary.This provides a complete picture of the fugitive emissions across that boundary,enabling identification of specific operations and times that give rise to higher emissions, and so enabling these emissions to be properly managed and controlled.

Oil & Gas Exploration and Pipeline Imaging

by GeoVantage     based in Peabody, MASSACHUSETTS (USA)

Exploration and Pipeline Imaging

GeoVantage specializes in custom imaging of basins for oil & gas exploration for up to date assessment of drilling activity and logistics. Large tracks of land, at 6 inch or 1 foot resolution, ensure that exploration companies know exactly what is happening in key regions of their lease holds and even those surrounding.

For pipelines, GeoVantage offers quick, efficient capture of intricate pipeline layouts across all of North America and other countries. To ensure timely service, both large and small captures can be collected by a large group of sensors deployed in multiple places.

Oil and Gas Pipeline Imaging and Class Analysis

GeoVantage works closely with firms that specialize in Oil and Gas Pipeline imaging and class analysis. GIS Data Specialists (GDS) is one of those firms. GDS is able to take the GeoVantage high resolution imagery and output the information needed to comply with regulatory or company requirements for reporting.



Wet gas monitoring for refineries

by Kurz Instruments, Inc.     based in Monterey, CALIFORNIA (USA)

Thermal mass flow meters provide excellent measurement capabilities in dry gas flows. They have proven durability, accuracy, and repeatability. However, thermal flow meters are sensitive to liquid droplets in a wet gas stream. For a thermal flow meter to work accurately in a condensing gas environment, the probe must be placed far enough downstream so that the entrained water has condensed onto the pipe wall. In a very wet environment, any condensing liquid (commonly referred to as mist or fog) contacting the sensor probes causes a high reading due to the liquid vaporizing on the heated portion of the sensor. As a result of this deficiency, measurements with conventional thermal meters are largely ignored when moisture levels rise because there is no confidence that the measurements are true.

Alkane (hydrocarbon) gas measurement for mudlogging in oil & gas drilling rigs

by MKS Instruments, Inc.     based in Andover, MASSACHUSETTS (USA)

The need for operator and maintainance intensive gas chromatograph (GC) analyzers was eliminated. Customer can now deploy all-optical, unattended sensor system for monitoring the composition of hydrocarbon gases (C1-C5) exiting the well bore which provides crucial information about the drilling formation that would save time and money.

Gas Detection Solutions for Hydrogen Fluoride (HF) Safety

by Boreal Laser Inc.     based in Edmonton, ALBERTA (CANADA)

Hydrogen Fluoride (HF) is a very useful chemical used in a variety of industries. However, HF is highly toxic with potential fatal consequences with exposure to humans, so facilities that make or use HF should exercise great care. Nevertheless, there is always the risk of leaks from process elements such as valves, pump seals and storage vessels. Tanker loading, transporting and unloading operations also provide opportunity for HF releases. Industrial processes that make or use HF typically have arrays of point sensors distributed throughout the unit. However, these sensors are maintenance intensive and have relatively slow response times. In addition, a point sensor will not detect an HF release unless it is located directly in the area of that release. Electrochemical HF sensors also respond to chlorine, ammonia, and sulfur dioxide, resulting in false alarms.

Gas monitoring instruments and systems for phosgene monitoring

by Gasmet Technologies Oy     based in Helsinki, FINLAND

Phosgene COCl2 is a colorless gas. While it has been used as a Chemical Weapon Agent (CWA) in the past, currently this poisonous gas is also an important reagent in synthesis in the pharmaceutical and chemical industries. The plants using phosgene are typically equipped with gas sensors to detect leaks in the indoor ambient air. The critical situations arise when equipment in contact with the gas at the manufacturing facilities are serviced and maintained. As phosgene is very poisonous, even small gas pockets in serviced equipment may be dangerous to maintenance personnel. Gasmet™ FTIR Gas Analyzers are ideal tools to monitor point sources of phosgene. The measurement technology has high specificity, may be operated continuously, and has a fast response time.

Multiparameter Monitoring for the Offshore Oil & Gas Industry

by Valeport Ltd     based in Totnes, UNITED KINGDOM

 Meeting the demands of small ROV’s to work class vehicles in the offshore oil & gas industry, Valeport have a range of sensors and probes to measure the physical parameters vital to safe operation.  From sensors to aid operation of the vehicle to probes for data input into metrology and construction operations, our “industry standard” packages are designed and built to perform.

AUV requirements can mean provision of complete housed instruments or OEM style for users own interface.  Our small, low power, accurate and robust sensors will aid AUV manufacturers and users to get the data required.

Portable Leak Detection

by Boreal Laser Inc.     based in Edmonton, ALBERTA (CANADA)

GasFinder2 can be used as a portable open path gas sensor to survey a large site relatively quickly. Areas of elevated gas concentration can be bracketed using shorter path lengths in order to locate leaking valves, flanges or fittings.

Sensor for Biogas

by Edinburgh Instruments Ltd     based in Livingston, UNITED KINGDOM

Anaerobic Digestion plants produce various gas components from a source material (or feedstock) that can be composed either solely or as a mixture of slurries, purpose-grown crops, food and organic waste material. The composition of the gas produced varies depending upon the feedstock and the Anaerobic digestion process itself. As a consequence, it is normal to measure various components of the resultant gas produced to evaluate the efficiency of the Anaerobic Digestion process. Furthermore, due to the flammable nature of Methane (CH4), and the risk of asphyxiation, most plants feature ambient air monitoring to protect personnel from any unplanned accumulation of leaked gas. CH4 is the gas component fuel, which is the intended end product of the anaerobic digestion process. In biogas plants, the concentration of CH4 in a working plant varies between 50%-75%, which is well above the Upper Explosive Limit (UEL).

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