Yeast propagation is performed when non-commercial yeast is used. Propagation is made in three consecutive steps during several days.
During propagation, temperature is maintained at a set level and the propagating yeast is aerated according to the particular strains requirement, so defined temperature control is needed.
A good solution is using a sanitary temperature sensor with a PR 5331A temperature transmitter mounted in the sensor head. The output from the 5331 needs to be split into a 0…10 VDC signal for the PLC and a 0…20 mA signal for a data-logger. A great solution is the PR 3109 isolated converter / splitter. The 3109 powers the 5331 transmitter and outputs the two isolated analog signals with super-fast response time.
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