Results 261 to 270 of about 849,954 (307)

NSTX high temperature sensor systems

18th IEEE/NPSS Symposium on Fusion Engineering. Symposium Proceedings (Cat. No.99CH37050), 2003
The design of the more than 300 in-vessel sensor systems for the National Spherical Torus Experiment (NSTX) has encountered several challenging fusion reactor diagnostic issues involving high temperatures and space constraints. This has resulted in unique miniature, high temperature invessel sensor systems mounted in small spaces behind plasma facing ...
H.W. Kugel, B. McCormack, R. Kaita, P. Goranson, L. Gutttadora, R. Hatcher, T. Holoman, D. Johnson, B. Nelson, C. Neumeyer, A.L. Roquemore   +10 more
openaire   +1 more source

Optical Fiber High-Temperature Sensors

Optics and Photonics News, 2009
Optical fiber sensors allow researchers and engineers to make accurate, reliable measurements under high-temperature conditions.
Anbo Wang, Yizheng Zhu, Gary Pickrell
openaire   +1 more source

High-Temperature Fibre Optical Sensor

26th International Conference on Optical Fiber Sensors, 2018
we report a sapphire Fabry-Perot cavity based fibre optical temperature sensor that is capable of operating at elevated temperatures > 1000°C for prolonged periods of time. The sensing cavity is mounted at the front end of an extended alumina tube and is illuminated by a collimated light beam, thus separating the hot zone from the optical fibre lead ...
R.D. Pechstedt, A. Sposito
openaire   +1 more source

High-temperature semiconductor gas sensors

Vacuum, 2001
Abstract In this work, the sensitivity of three sensor materials (SrTiO 3 , CeO 2 , Ga 2 O 3 ) for acetone was studied in the 25–850°C temperature range, by a Quadrupole Mass Spectrometer coupled DC sensor tester, planned and built in our laboratory.
R Bene, Z Pintér, I.V Perczel, M Fleischer, F Réti   +4 more
openaire   +1 more source

High-temperature ceramic pressure sensor

Sensors and Actuators A: Physical, 1997
Abstract A pressure microsensor for working at high temperature has been developed. The device consists of a tantalum nitride thin film, patterned on a Wheatstone bridge configuration, sputter-deposited onto thermally oxidized silicon wafers with an aluminium interconnection layer and a silicon dioxide passivation.
I Ayerdi, E Castaño, A García-Alonso, J Gracia   +3 more
openaire   +1 more source

High Resolution Balloonborne Temperature Sensor

Journal of Applied Meteorology, 1969
Error analysis of high resolution balloon-borne temperature sensor and comparison of temperature data with simultaneous rawinsonde ...
Dennis W. Camp, Frank E. Caplan
openaire   +1 more source

High-temperature optical flame sensor

1998 Fourth International High Temperature Electronics Conference. HITEC (Cat. No.98EX145), 2002
The design, fabrication and performance of hybrid high-temperature compatible optical flame sensors are discussed. The sensors are comprised of two spectrally filtered gallium phosphide photodiodes, a dual channel silicon on insulator transimpedance amplifier and a gold-metallized aluminum nitride header/printed circuit board.
P.E. Sims, J.D. Lesko, J.A. Cox, E. Chalfin, J.B. McKitterick   +4 more
openaire   +1 more source

Fiber tip high temperature sensor

2010 Photonics Global Conference, 2010
We present an alternative to fabricate ultra-small air-gap micro-cavity based Fabry-Perot interferometer (AG-MC-FPIs) for high-temperature sensing by focused ion beam (FIB) machining in tapered fiber tips (TFTs). Its size is smaller than 10μm and the sensitivity is ∼ 20 pm/°C near the wavelength of 1550 nm.
Jun-long Kou, Jing Feng, Fei Xu, Yan-qing Lu   +3 more
openaire   +1 more source

High temperature silicon Hall sensor

Sensors and Actuators A: Physical, 1993
Abstract A high temperature bulk-silicon Hall sensor is presented in which the minority carrier exclusion effect is exploited to obtain an upper operating temperature limit well exceeding 300 °C whereas regular planar silicon Hall plates suffer from a serious sensitivity decrease at these temperatures due to large leakage currents from the sensor to ...
S.R. in 't Hout, S. Middelhoek
openaire   +1 more source

High-temperature, multihole SQUID sensor

Review of Scientific Instruments, 1982
A report is given on the preparation of a high-temperature SQUID sensor by coating a niobium sensor with a Nb3Sn layer superconducting at approximately 18 K. It seems that a similar technique could make it possible for a SQUID sensor to work at even higher temperatures (e.g., 20 K for GaxNb1−x or 23 K for Nb3Ge layers).
Stefan Zarembiński, Jakub Kachniarz
openaire   +1 more source