Fermentation monitoring and control by on-line flow injection and liquid chromatography

1991 ◽  
Vol 249 (1) ◽  
pp. 87-100 ◽  
Author(s):  
K Schügerl ◽  
L Brandes ◽  
T Dullau ◽  
K Holzhauer-Rieger ◽  
S Hotop ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Flow Injection ◽  
Monitoring And Control ◽  
Line Flow ◽  
On Line ◽  
Fermentation Monitoring ◽  
And Control

On-line monitoring and control of fermentation processes by flow-injection analysis

1991 ◽  
Vol 249 (1) ◽  
pp. 101-111 ◽  
Author(s):  
Lawrence W Forman ◽  
Benjamin D Thomas ◽  
Fredric S Jacobson
Keyword(s):  
Flow Injection ◽  
Flow Injection Analysis ◽  
Monitoring And Control ◽  
Fermentation Processes ◽  
On Line ◽  
And Control

Infrared Sensing for On-Line Weld Geometry Monitoring and Control

1995 ◽  
Vol 117 (3) ◽  
pp. 323-330 ◽  
Author(s):  
P. Banerjee ◽  
S. Govardhan ◽  
H. C. Wikle ◽  
J. Y. Liu ◽  
B. A. Chin
Keyword(s):  
Plate Thickness ◽  
Welding Process ◽  
Temperature Gradients ◽  
Monitoring And Control ◽  
Depth Of Penetration ◽  
Bead Width ◽  
Weld Geometry ◽  
On Line ◽  
And Control ◽  
Welding Processes

This paper describes a method for on-line weld geometry monitoring and control using a single front-side infrared sensor. Variations in plate thickness, shielding gas composition and minor element content are known to cause weld geometry changes. These changes in the weld geometry can be distinctly detected from an analysis of temperature gradients computed from infrared data. Deviations in temperature gradients were used to control the bead width and depth of penetration during the welding process. The analytical techniques described in this paper have been used to control gas tungsten arc and gas metal arc welding processes.

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