Last edited by Neshakar
Friday, October 9, 2020 | History

3 edition of Remote fiber-optic methane monitor found in the catalog.

Remote fiber-optic methane monitor

T. H. Dubaniewicz

Remote fiber-optic methane monitor

by T. H. Dubaniewicz

  • 361 Want to read
  • 40 Currently reading

Published by U.S. Dept. of the Interior, Bureau of Mines in Washington, D.C .
Written in English

    Subjects:
  • Firedamp -- Measurement,
  • Optical detectors -- Testing,
  • Fiber optics

  • Edition Notes

    Statementby T.H. Dubaniewicz, Jr., and J.E. Chilton
    SeriesReport of investigations -- 9407, Report of investigations (United States. Bureau of Mines) -- 9407
    ContributionsChilton, J. E
    The Physical Object
    FormatMicroform
    Pagination8 p.
    ID Numbers
    Open LibraryOL16098129M

    22 km System. Diaz et al. demonstrated in references [57,58] some networks based on bus topology for wavelength division multiplexing of optical sensors using distributed fiber Raman amplification in order to compensate for the inherent losses of the transmission channel, the optical fiber, and the passive devices.. The bus consisted of a spine section that connects a series of. Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

    Optical Techniques for Sensing and Measurement in Hostile - SPIE. Fiber Optic thermometers for highly accurate measurement of power transformer temperatures.

    KEYWORDS: Optical fibers, Light sources, Methane, Sensors, Laser applications, Fiber lasers, Fiber optics sensors, Sensing systems, Time division multiplexing, Absorption Read Abstract + The coal industry plays an important role in the economic development of China.   It is sensitive to parts-per-billion methane levels and runs on little power, Rongere says, and monitoring remote pipelines with a drone would be far cheaper than driving around looking for leaks. A small drone carries a miniaturized methane gas sensor, originally made by NASA, to detect natural gas leaks from equipment and pipelines.


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Remote fiber-optic methane monitor by T. H. Dubaniewicz Download PDF EPUB FB2

The U.S. Bureau of Mines is investigating the use of fiber-optic technology to monitor mine atmospheres. This report describes a methane monitor based on differential absorption of infrared light. The monitor can detect methane concentrations as low as Vol pct as far away as 2 km via fiber-optic cable.

The upper range is vol pct methane. Additional Physical Format: Dubaniewicz, T.H. (Thomas H.). Remote fiber-optic methane monitor 8 p. (DLC) (OCoLC) Material Type: Document, Government.

RI REPORT OF INVESTIGATIONS/ Remote Fiber-Optic Methane Monitor By T. Dubaniewicz, Jr., and J. Chilton UNITED STATES DEPARTMENT OF THE INTERIOR. Remote fiber-optic methane monitor [electronic resource] / by T.H.

Dubaniewicz, Jr., and J.E. Chilton U.S. Dept. of the Interior, Bureau of Mines [Pittsburgh, Pa.?] Wikipedia Citation Please see Wikipedia's template documentation for further citation fields that may be required.

An all optical fiber multipoint methane sensing system based on a new pseudo differential detection technique, operating at the near-infrared wavelength of nm, is developed for continuous remote monitoring of methane gas concentration.

A novel all fiber optic sensing monitoring technique is researched for remotely detecting the concentration of methane gas. The triangular signal is used to modulate the light wavelength of the DFB laser. The narrow absorption line of the laser eliminates the cross sensitivity to moisture, ethane or other gases.

With the use of the optical fiber links between monitor and sensor header, the. [Show full abstract] ventilation air methane oxidizer system, and Meet requirements for accurate measurements to the oxidizer exhaust emissions, A Fiber optic methane monitor.

Fiber optic sensing for methane has been found to be a successful candidate for transfer to underground use. Fiber optic sensing has a range of % full spectra of methane detection and its power "box" can be housed in a fresh air base or on the surface up to 20km from the sensor head.

Hybrid Fiber-Optic Electrochemical Carbon Monoxide Monitor. Other ID. RI NTIS Number. PB Optically Powered Remote Gas Monitor. Other ID. RI Remote Fiber-Optic Methane Monitor. Other ID. RI NTIS Number. PB Nova SkyRAN - fronthaul remote access and monitoring. Modular and scalable solution for real-time, on-demand testing and 24/7 monitoring of the radio frequency (RF) spectrum and optical fiber networks.

A prototype remote fiber optic methane monitor was challenged with combustion smoke from three representative coal mine materials—namely douglas-fir wood, SBR belt, and Pittsburgh seam coal. A protective screen covering the fiber optic sensor effectively prevented smoke from obscuring the optical beam under specified test conditions.

A novel all fiber optic multipoint methane monitoring system is researched for remotely detecting the concentration of methane gas in coal mines. A nm distributed feedback (DFB) laser is used as the light source, by taking the triangular signal to modulate the light frequency of the DFB laser.

Methane detecting is very important for outburst prediction. Optical fiber methane sensor is a new technique and is safer especially in coal mine. Optical fiber methane gas sensors based on absorption have attracted considerable attention in recent years because of their remote.

A novel all fiber optic sensing monitoring technique is researched for remotely detecting the concentration of methane gas. The triangular signal is used to modulate the light wavelength of the. better limits of detection.

An in situ multiplexing long-path fiber-optic remote sensing system for methane that uses a single laser source was described (B9). It can measure the spatial distribution of methane via frequency modulation spectroscopy and harmonic detection. Using a fiber-optic splitter, the remote monitoring.

Highlights Optical fiber NH 3 sensors have been developed. The feasibility of using the sensors for air quality monitoring has been investigated. The sensors are reversible, can be used for continuous monitoring NH 3 in air. The sensors are highly sensitive, can detect NH 3 in ppbv level.

Cross responses of the sensors to moisture, CO 2 and temperature change have been investigated. @article{osti_, title = {Optically powered remote gas monitor}, author = {Dubaniewicz, Jr, T H and Chilton, J E}, abstractNote = {Many mines rely on toxic gas sensors to help maintain a safe and healthy work environment.

This report describes a prototype monitoring system developed by the US Bureau of Mines (USBM) that uses light to power and communicate with several remote toxic gas. Download Citation | Fiber optic sensors: Fundamentals and applications: Fourth edition | This fourth edition of Fiber Optic Sensors is revised and updated to include the new sensing technologies.

ARPA-E’s $60 million MONITOR (Methane Observations Networks with Innovative Technology to Obtain Reductions) program is funding a dozen technologies for monitoring well pads.

The goal is to accurately detect small leaks for an annual cost of $3, as well as estimate the leaks’ locations and flow rates. MONITOR’s Methane Detection, Localization and Quantification Challenge Monitor = M ethane O Fiber optic sensor is broadly applicable localization, quantification, continuous monitoring, remote communication - at low-cost and high sensitivity – Result: leak prioritization, non-.

Summary. The major types of fiber optic sensors for environmental monitoring are presented. Two categories of sensors are described: those for monitoring pollutants (hydrocarbons, herbicides, ammonia) and those for monitoring environmental conditions (humidity, pH, and carbon dioxide partial pressure of sea-and ocean water).The relative Raman cross sections of methane and other organic compounds relative to nitrogen are documented.

The benefit of using a capillary waveguide with the dual fiber optic probe is.Underground Sensing Monitoring and Hazard Detection for Environment and Infrastructure Posted by: dadal Posted on: Underground Sensing Monitoring and Hazard Detection for.