<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Vacuum fluctuation was measured using three different vacuum control methods. Firstly, the use was made of a control valve delivered by the manufacturer; then, an additionally installed frequency converter was used. Lastly, a frequency converter fitted with the stabilisation device prototype was used. First, control sensitivity according to ISO was measured in all the three alternatives. Then, vacuum fluctuation during milking was measured. To conduct the measurements under objectively identified conditions, another measurement was conducted with air feed during milking being replaced with a precisely defined variable flow rate. The conducted measurement confirmed the fact that when the frequency converter is used, vacuum fluctuation in stabilised condition is at the same level as when the control valve is used. If there are sudden changes in flow rate and the frequency converter is used, vacuum fluctuation increases. The proposed stabilisation device prototype can reduce the fluctuation in small milking plant but it is not suitable in large milking parlours.</p></abstract>

Vacuum fluctuation was measured using three different vacuum control methods. Firstly, the use was made of a control valve delivered by the manufacturer; then, an additionally installed frequency converter was used. Lastly, a frequency converter fitted with the stabilisation device prototype was used. First, control sensitivity according to ISO was measured in all the three alternatives. Then, vacuum fluctuation during milking was measured. To conduct the measurements under objectively identified conditions, another measurement was conducted with air feed during milking being replaced with a precisely defined variable flow rate. The conducted measurement confirmed the fact that when the frequency converter is used, vacuum fluctuation in stabilised condition is at the same level as when the control valve is used. If there are sudden changes in flow rate and the frequency converter is used, vacuum fluctuation increases. The proposed stabilisation device prototype can reduce the fluctuation in small milking plant but it is not suitable in large milking parlours.

Vacuum Fluctuation in 2 × 13 Herringbone Milking Parlour in Dependence on Vacuum Control Method

Mendel University in Brno, Faculty of Agronomy, Department of Agricultural, Food and Environmental Engineering, Zemědělská 1, 613 00 Brno, Czech Republic

Mendel University in Brno, Czech Republic

Acta Technologica Agriculturae

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Vacuum fluctuation was measured using three different vacuum control methods. Firstly, the use was made of a control valve delivered by the manufacturer; then,...

Vacuum Fluctuation in 2 × 13 Herringbone Milking Parlour in Dependence on Vacuum Control Method

Published Online: Dec 12, 2015

Page range: 118 - 121

DOI: https://doi.org/10.1515/ata-2015-0023

Keywords
vacuum fluctuation, vacuum control methods, frequency converter

© Slovak University of Agriculture in Nitra

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Vacuum Fluctuation in 2 × 13 Herringbone Milking Parlour in Dependence on Vacuum Control Method

Published Online: Dec 12, 2015

Page range: 118 - 121

DOI: https://doi.org/10.1515/ata-2015-0023

Keywordsvacuum fluctuation, vacuum control methods, frequency converter

© Slovak University of Agriculture in Nitra

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
vacuum fluctuation, vacuum control methods, frequency converter