Updated Quality Control by IoT－Developed Testing Method at Lab and On-Line Measurement at Production site

This paper discusses the advantages of frequency modulated transmission of information in plants, and how this philosophy is adapted in practice in the form of two instruments for on-line measurement of liquid and gas densities. The importance of measuring density is well appreciated for on-line blending and various forms of quality control applications, but special attention is drawn to its necessity in gas flow metering.

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Finally: A Reliable, On-Line Carbon-in-Ash Analyzer

ASME 2004 Power Conference ◽

10.1115/power2004-52066 ◽

2004 ◽

Author(s):

J. J. Letcavits ◽

Hans Conrads ◽

Ed Shelton ◽

Todd Sommer

Keyword(s):

Quality Control ◽

Fly Ash ◽

Reliable Data ◽

Unburned Carbon ◽

Loss On Ignition ◽

Representative Sampling ◽

Line Measurement ◽

On Line ◽

Line Technology ◽

Control Regime

The paper describes the principle features necessary for reliable and representative on-line unburned carbon-in-ash (UBC) measurement. The paper shows how modern on-line technology has been applied to obtain truly representative and reliable data for the evaluation of fly ash quality and boiler performance. To assure accurate UBC data from which to make operating decisions, one must achieve representative sampling in the ash stream, comparability of unburned carbon to loss-on-ignition (LOI) with various fuel types, a quality control regime to ensure the accuracy of the on-line measurement system in comparison with laboratory standards and auditing of the QC process.

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Thickness Measurement in the AEM by Macintosh-Based Analysis of Two-Beam Convergent Beam Patterns

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010013612x ◽

1990 ◽

Vol 48 (2) ◽

pp. 504-505

Author(s):

John F. Mansfield ◽

Douglas C. Crawford

Keyword(s):

Electron Microscope ◽

Video Camera ◽

Thickness Measurement ◽

Specimen Thickness ◽

Crystalline Materials ◽

Beam Dynamic ◽

Line Measurement ◽

On Line ◽

Image Position ◽

Convergent Beam

A method has been developed that allows on-line measurement of the thickness of crystalline materials in the analytical electron microscope. Two-beam convergent beam electron diffraction (CBED) patterns are digitized from a JEOL 2000FX electron microscope into an Apple Macintosh II microcomputer via a Gatan #673 CCD Video Camera and an Imaging Systems Technology Video 1000 frame-capture board. It is necessary to know the lattice parameters of the sample since measurements are made of the spacing of the diffraction discs in order to calibrate the pattern. The sample thickness is calculated from measurements of the spacings of the fringes that are seen in the diffraction discs. This technique was pioneered by Kelly et al, who used the two-beam dynamic theory of MacGillavry relate the deviation parameter (Si) of the ith fringe from the exact Bragg condition to the specimen thickness (t) with the equation:Where ξg, is the extinction distance for that reflection and ni is an integer.

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A Simulation Study for Effect of Particle Size on On-line Measurement Sampling System of Traditional Chinese Medicine Extraction Process

CHINESE JOURNAL OF ANALYTICAL CHEMISTRY (CHINESE VERSION) ◽

10.3724/sp.j.1096.2013.30113 ◽

2013 ◽

Vol 41 (12) ◽

pp. 1899

Author(s):

Cheng-Lin SUI ◽

Zhao-Zhou LIN ◽

Zhi-Sheng WU ◽

Bing XU ◽

Yang LI ◽

...

Keyword(s):

Particle Size ◽

Chinese Medicine ◽

Traditional Chinese Medicine ◽

Simulation Study ◽

Extraction Process ◽

Sampling System ◽

Line Measurement ◽

On Line ◽

Effect Of Particle Size

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Control Strategies for a Highly Loaded Biological Ammonia Elimination Process

Water Science & Technology ◽

10.2166/wst.1993.0693 ◽

1993 ◽

Vol 28 (11-12) ◽

pp. 531-538 ◽

Cited By ~ 1

Author(s):

B. Teichgräber

Keyword(s):

Closed Loop ◽

Control Strategies ◽

Level Control ◽

Sludge Dewatering ◽

Loop Control ◽

Reject Water ◽

Line Measurement ◽

Control Pattern ◽

On Line ◽

Treatment Facilities

A nitrification/denitrification process was applied to reject water treatment from sludge dewatering at Bottrop central sludge treatment facilities of the Emschergenossenschaft. On-line monitoring of influent and effluent turbidity, closed loop control of DO and pH, and on-line monitoring of nitrogen compounds were combined to a three level control pattern. Though on-line measurement of substrate and product showed substantial response time it could be used to operate nitrification/denitrification within process boundaries.

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