Results 11 to 20 of about 3,645,724 (286)

Modular Analytical Multicomponent Analysis in Gas Sensor Aarrays [PDF]

open access: yesSensors, 2006
A multi-sensor system is a chemical sensor system which quantitatively andqualitatively records gases with a combination of cross-sensitive gas sensor arrays andpattern recognition software.
Theodor Doll   +5 more
doaj   +2 more sources

Gas sensor design using a Fabry-Perot interferometer with long cavity length as a modulator [PDF]

open access: yes, 2006
A gas sensor based on correlation spectroscopy using a FPI with long cavity length (>500 µm) as a modulator is presented.
Rutt, Harvey N.   +1 more
core   +3 more sources

Wireless communication networks for gas turbine engine testing [PDF]

open access: yes, 2011
A new trend in the field of Aeronautical Engine Health Monitoring is the implementation of wireless sensor networks (WSNs) for data acquisition and condition monitoring to partially replace heavy and complex wiring harnesses, which limit the versatility ...
Atkinson, Robert   +32 more
core   +4 more sources

Non-injective gas sensor arrays: identifying undetectable composition changes [PDF]

open access: yes, 2021
A gravimetric, MOF-based (MOF = metal-organic framework) sensor array functions by measuring the mass of gas adsorbed in an array of MOFs. Changes in the gas composition are expected to produce detectable changes in the mass of gas adsorbed in the MOFs.
Nickolas, Gantzler   +4 more
core   +1 more source

Gas identification with tin oxide sensor array and self-organizing maps: adaptive correction of sensor drifts [PDF]

open access: yes, 1998
Low-cost tin oxide gas sensors are inherently nonspecific. In addition, they have several undesirable characteristics such as slow response, nonlinearities, and long-term drifts.
Antonio Pardo   +7 more
core   +1 more source

Optical Gas Sensor Fabrication Based on Porphyrin-Anchored Electrostatic Self-Assembly onto Tapered Optical Fibers [PDF]

open access: yes, 2012
Tapered optical fibers with nano-assembled coatings of thicknesses of order tens of nanometres were used for the detection of ammonia gas. The film coating was composed of alternate layers of tetrakis-(4-sulfophenyl) porphine (TSPP) and poly(allylamine ...
Lee, Seung-Woo   +5 more
core   +1 more source

Low-Cost Calibration MOS Gas Sensor for Measuring SO2 Pollutants in Ambient Air [PDF]

open access: yesNature Environment and Pollution Technology, 2022
Air pollution has evolved into a global issue that necessitates immediate and accurate pollution control. The usage of the Metal Oxide Semiconductor (MOS) sensor as a monitoring system for air pollution levels is one possible answer to this challenge ...
R. Purbakawaca, A.S. Yuwono, I.D.M. Subrata and H. Alatas
doaj   +1 more source

Inkjet printed LED based pH chemical sensor for gas sensing [PDF]

open access: yes, 2009
Predictable behaviour is a critical factor when developing a sensor for potential deployment within a wireless sensor network (WSN). The work presented here details the fabrication and performance of an optical chemical sensor for gaseous acetic acid ...
O'Toole, Martina   +8 more
core   +2 more sources

Sub-Nanoliter Spectroscopic Gas Sensor

open access: yesSensors, 2006
In this work, a new type of optical fiber based chemical sensor, the sub-nanolitersample cell (SNSC) based gas sensor, is described and compared to existing sensors designsin the literature.
Anbo Wang, Gary Pickrell, Bassam Alfeeli
doaj   +1 more source

Non-dispersive infra-red (NDIR) measurement of carbon dioxide at 4.2μm in a compact and optically efficient sensor [PDF]

open access: yes, 2013
Non-dispersive infra-red (NDIR) gas detection has enjoyed widespread uptake as a result of development of devices in the standard miniature format for gas sensors, consisting of a cylinder with external dimensions of 20mm diameter x 16.5mm height.
Hodgkinson, Jane   +4 more
core   +1 more source

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