User Manual

Controller user's manual INDU-50 v1.95(86)EN
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7. Pasterisation
Due to frequent application of INDU50 controller as a unit controlling the process of thermal food processing, its properties
were widened by the possibility of counting the pasterisation number according to the aritmetric variant of the general
method.
The following sterilisation coefficients were applied: (z = 4.8K; z = 7.78K; z = 10K; z = 15K; z = 25K; z = 33,34K — set in Setup;
cell SF80) for the process temperature Tr also set in Setup SF77. There is a possibility of performing the process either on
the bases of the set value of the pasterisation number only (Setup SF76), or on the bases of the set value of pasterisation
number and the process time. In the second case the parametrisation of maximum process time can constitute additional
protection of the production process correctness. Setting of the adequate integration time, which means the time between
consecutive moments of counting pasterisation number (setup cell SF79), was also taken into account in INDU50 controller.
The possibility of determining the temperature, from which the controller should start counting the pasterisation number
(Setup SF81) was also added. In order to utilise INDU50 controller for counting the pasterisation number the Setup cell SF45
– condition of ending START mode - should be set on 19 or 20. The pasterisation number is determined in Setup SF76.