AN1154 precision RTD instrumentation for temperature sensing

... develop a controller for temperature control inside a room within a desired band of temperatures for comfort The details of the geometry of the room and the HVAC system based on displacement ventilation ... disadvantages of the DMC controller First, the DMC controller is a local controller which can only guarantee the stability of the...

Ngày tải lên: 05/09/2013, 16:11

... on overall control loop Selection tables Future technologies 20 5 6.1 6 .2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 6.10 6.11 Control Valves 20 5 20 6 22 0 22 5 22 8 23 4 23 7 24 1 24 2 24 3 24 4 Principles of control valves ... 1131-3;OPC) Practical SCADA Systems for Industry Practical Boiler Control and Instrumentation for Engineers and Technicians Practical Process...

Ngày tải lên: 01/01/2014, 21:15

... analyte solution and silicon nanowires 2.2 Surface modification The silicon wire FET sensor is modified with urease following procedure below Before modification, the Al2 O3 surface was treated with ... plasma [14] (50 mW power, 30 sccm flow rate for min) for two purposes One is for cleaning the sample surface, and the other one is for generating a hydrophilic surface The wires...

Ngày tải lên: 16/03/2014, 15:25

... the electrical and gas sensing behavior of ZnO nanowires Fig Characteristics of In3 O2 nanowires: (a) SEM image of In3 O2 nanowires, (b) TEM image of nanowire 70 nm in width, and (c) ED pattern ... image of a nanowire, and (e) linescan of the HAADF signal (solid line) and numerical fit of the shape of the nanowire (dashed line) As both composition and phase ca...

Ngày tải lên: 16/03/2014, 15:25

... candidate of gas-sensing applications [15–17] For the gas-sensing materials, there are various approaches using CNTs as the solution such as CNTs for dispersion, CNTs for composite, CNTs for filling, ... indicate SnO2 rutile peaks and dash lines indicate TiO2 rutile peaks Table The interplanar spacing values of SnO2 TiO2 mixed oxide calculated by Vegard’s law are close to t...

Ngày tải lên: 20/03/2014, 13:04

... the mother phase of the nanosize dimension derivatives applied for sensing layers is shown This morphology seems to be promising as a precursor for sensing layers with nanosize dimension grains ... A K., Pfeifer, J., T´ th, A L and Gouma, P I., a o Wet chemical synthesis of nanosize tungsten oxide for sensing applications In Proceedings of the First International Works...

Ngày tải lên: 20/03/2014, 13:05

... focus on suspended Porous Silicon microhotplates Results Characterization of the gas sensors was performed at isothermal mode of operation, by keeping constant the power supplied to the heater For ... micro-hotplates were used for low power consumption Characterization of gas sensors was performed for various NH3 concentrations and operating temperatures, using isothermal mode...

Ngày tải lên: 20/03/2014, 13:05

... employed The system allows for sample rotation (360◦ ) and sample inclination (90◦ ) 2.4 Gas sensing measurements The gas sensing properties of the different hybrid active materials produced were ... higher amount of SnO2 than WO3 is present in the hybrid materials 3.2 Gas response analysis The gas sensing properties of the different hybrid materials produced were...

Ngày tải lên: 20/03/2014, 13:05

... sensitive to TMA at 50–85◦ C, but not sensitive to NH3 , gasoline, C2 H5 OH, CH4 and CO and water vapor These results indicate that the WO3 thin film sensor prepared by a sol–gel Fig X-ray photoelectron ... lie at 37.1 and 35.20 eV, respectively and are contributed to lattice tungsten in the WO3 crystal 3.2 Gas sensing properties of the thin film sensors Result...

Ngày tải lên: 20/03/2014, 13:12

... the optimal locations for sensors In addition, processing algorithms for extraction of patterns from gathered data are required, as well as wearable and wireless hardware to allow the data to be ... University of Bath, England, showed that the stress-strain profile of the unadulterated PU foam sample and that of the PPy-coated PU foams sample were similar showing regions of...

Ngày tải lên: 19/06/2014, 10:20

... Regazzoni, and C Armani, “A comparison among cooperative spectrum sensing approaches for cognitive radios,” in Proceedings of the 2nd International Workshop on Cognitive Information Processing (CIP ... cannot exploit them [6, 14], while performing spectrum sensing Architectures for Spectrum Sensing In this section, the main classes of spectrum sensing architectures wil...

Ngày tải lên: 21/06/2014, 05:20

... 19 Holland L: Vacuum Deposition of Thin Films Wiley, New York; 1956 doi:10.1007/s11671-010-9744-5 Cite this article as: Zhang et al.: Design and Fabrication of Fiber-Optic Nanoprobes for Optical ... nanoprobe fabrication A thin film of an optically opaque metal such as aluminum, silver, or gold is coated along the outside walls of the tapered optical fiber tip to for...

Ngày tải lên: 21/06/2014, 08:20

... for optimizing the projection matrix, supposing the sparsifying matrix is known (1) Initialize: the projection matrix Φ, sparsifying matrix Ψ, and equivalent dictionary D, iterative steps l For ... samples for recovery and improve the recovery performance Then, the performance of recovery algorithm in CS is evaluated before and after projection matrix optimization In orde...

Ngày tải lên: 21/06/2014, 16:20