Composite monitors

Process analyses On-line composition monitoring, closed-loop control Saltzman, 2000 ... 

A.C. Quinn, P.J. Gemperline, B. Baker, M. Zhn, D.S. Walker, Eibre-optic UV/visible composition monitoring for process control of batch reactions, Chemom. Intell. Lab. Sysl, 45, 199-214 (1999). 

Liquid and gas - transmission Composition monitoring Liquid and gas - transmission Composition monitoring. 

Plastics and polymers Monomers, homopolymers and copolymers, and formulated products Composition monitoring and physical properties, such as crystallinity, conformation, monomer units, and end groups... 

Polymer products Adhesives, adhesive tapes, sealants, latex emulsions, rubber materials, plastic fabrication, etc. Composition monitoring Rate of cure monitoring Product QC... 

Consumer products Liquids detergents and soaps Personal care products Cosmetics Polishes - waxes, etc. Blending control Composition monitoring Raw materials screening Quality control... 

Combustion gases Regulatory applications. Fire hazard assessment Composition monitoring - gas Trace gas and vapor analysis... 

Fuels Natural gas, LPG, propane/butane, distillates, gasoline, diesel, fuel oil, syn-fuels, additives Liquid and gas - transmission Composition monitoring, Octane and cetane number measurements... 

Solvents High-purity products, mixtures Composition monitoring Vapor analysis... 

Specialty gas products High-purity gases, gas mixtures Composition monitoring Impurity monitoring... 

Specialized products Water treatment products Dyes and pigments Textiles Pulp and paper Agrochemicals Production control Composition monitoring Raw materials screening QC... 

Von Alfthan [22] describes an on-stream x-ray fluorescence system that consists of two flow cells through which the slurry passes. In the classifying flow cell, the slurry flows in a straight path behind a window it then strikes an obstacle that causes slurry mixing as it enters a turbulent flow cell. X-rays excite the slurry in both cells and the resulting fluorescent radiation is a measure of particle size. The system, sold as the Courier 300, measures both x-ray scattering and x-ray fluorescence and is intended primarily as a composition monitor. The measured data can be analyzed to give chemical composition, solids content and maximum particle size. 

Dosimeter Composition Monitored species Monitoring wavelength [nm] and monitoring time Ge [m J ] Ref... 

In the 128 mode, the 40/80 DISPLAY key selects which screen mode is used as the default. This key is checked at power-on, when RUN/STOP-RESTORE is pressed, or when the RESET button (found next to the power switch) is pressed. This key has no meaning in 64 mode since 80 columns are not available, again for the sake of compatibility. In either 128 or CP/M mode, the same VIC chip used on the 64 displays 40 columns, graphics, and sprites. The 40-column screen can be seen only on a television or composite monitor, not on the RGB display. 

APRUZZESE, E., BALKE, s. T. and DiosADY, L.L. (2000) In-line colonr and composition monitoring in the extrasion cooking process. Food Research International, 33, 621-628. 

Horstad et al. (1995) described a top-down filling as the most likely case for the northern part of the Snorre reservoir. The differences in oil composition monitored for the petroleums hosted in the Statfjord and Lunde Formations respectively indicated already at that point that the Snorre reservoir was compartmentalized. 

This chapter is devoted to the description of an easy and efficient method based on the application of gas phase Flow FTIR spectroscopy analysis for determination of adsorption characteristics of volatile organic compounds. As adsorbent beds are usually operated under dynamic conditions, the adopted analytical approach is based on gas phase composition monitoring at reactor outlet during adsorption/ desorption experiments carried out under dynamic regime. This method permits further simultaneous detection of new IR bands that may originate from adsorbate dissociation during adsorption or desorption. 

In common with other analytical techniques, the best accmacy will be obtained by reference to calibrated gas mixtures whose composition is similar to that of the sample. This is straight forward if the sample composition remains fairly constant. If the gas composition varies more widely, one may need to calibrate by reference to a small number of selected gas mixtures. In a typical case, for a complete calibration, to provide accurate composition monitoring, it is necessary to use a minimum number N calibration gases where N is calculated as ... 

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