Automatic Control of Food Manufacturing Processes by I. McFarlane

By I. McFarlane

In the 10 years because the first variation of this ebook seemed there were major advancements in foodstuff approach engineering, particularly in biotechnology and membrane software. Advances were made within the use of sensors for strategy keep watch over, and the expansion of knowledge expertise and online machine purposes keeps apace. additionally, plant funding judgements are more and more made up our minds via caliber insurance concerns and feature to include a better emphasis on well-being and questions of safety. The content material of this version has been rearranged to incorporate descriptions of contemporary advancements and to mirror the impression of latest expertise at the regulate and operations of automatic plant. unique examples were retained the place proper and those, including many new illustrations, supply a complete consultant to sturdy practice.

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4 Software for batch control Computer-based control systems offer various forms of dialogue between the system and the operator. The APV Computer Control System (ACCOS) is one of several software packages well established in food process control. In a description of the development of ACCOS, Lloyd (1976) identifies two categories of task to be performed by the control system: those with which the plant manager has no concern and those the plant manager may need to change. In the first group are modules necessary for the operation of various items of computer equipment and peripherals.

It was found that feeding the two grades simultaneously out of two bins into a common blowing line to a third bin gave much better mixing than applying intermittent recycling from discharge to inlet ofthe collecting bin while transferring the two powders from their holding bins one after the other. In the automatic system for make-up of dry sausage mix installed in 1979 at the Armour Processed Meat Co. plant at Mason City, Iowa, USA, fresh and frozen beef and pork were weighed into a blender using weigh cells on the blender, and then given a first stage of mixing in the blender until the mix was homogeneous enough for a sample to be taken for a lean/fat ratio test.

This test, though far from perfect, was effective enough to concentrate 50-60% of the unwholesome fruit into a stream containing less than 15% of the total. The IN-LINE SENSORS 31 concentration of unwholesome fruit in that stream was 5-15 times that in the original load. Worker efficiency in the mechanically assisted process was almost double that of conventional grading. This illustration demonstrates that automatic grading systems can assist productivity even when their efficiency is poor. 1 Sorting by colour The efficiency of removal of discoloured coffee beans by monochromatic and bichromatic colour sorting is reported by Fox et al.

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