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Understanding VaDia Viewer data
1.
FOREWORD
This document is intended to help you understand the data logged with your VaDia.
It contains interesting examples of real-life VaDia recordings and a short explanation of what
you see and what can be concluded.
This document is written for (semi-) professionals in the dairy industry and assumes a basic
knowledge and understanding of milking.
This document is nr. 3 of the following 3 documents:
'VaDia Startup Guide'
'VaDia Viewer User Manual'
'Understanding VaDia Viewer data'.
Latest versions of these documents can be found on our website
www.biocontrol.no
Special thanks to Odd Rønningen, Ghislain Coppejans, Johan Grolleman and the companies
that allowed them to provide their valuable input.
Disclaimer: this document has been carefully made by consulting milking experts. It is
'informative' and is not intended to be complete, nor can the content be warranted for
correctness and to be without errors. It is advised to be careful with making conclusions only
on the basis of VaDia recordings.
Understanding VaDia Viewer data v1.0
1/12
www.biocontrol.no/vadia
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Table of Contents
Related Manuals for Biocontrol VaDia
Summary of Contents for Biocontrol VaDia
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Page 1: Foreword
Understanding VaDia Viewer data FOREWORD This document is intended to help you understand the data logged with your VaDia. It contains interesting examples of real-life VaDia recordings and a short explanation of what you see and what can be concluded. -
Page 2: Table Of Contents
Contents FOREWORD ........................1 1.1. Changes in this document compared to previous version ............2 WHAT CAN VADIA DO FOR YOU ................... 3 DEFINITIONS AND BACKGROUND THEORY ..............4 3.1. Teat-end vacuum fluctuations ....................4 3.2. Short Milk Tube (SMT) vacuum recording ................5 3.3. -
Page 3: What Can Vadia Do For You
WHAT CAN VADIA DO FOR YOU VaDia gives you a good indication of the performance of the milking equipment, e.g. the following can be recorded and analyzed with VaDia: • Average teat end vacuum with milk flow • Irregular vacuum fluctuations and heavy vacuum drops that indicate insufficient vacuum capacity (vacuum reserve and under-dimensioned transport capacity) •... -
Page 4: Definitions And Background Theory
This is because all 4 teats get vacuum at the same time which has an effect on the cluster vacuum. In case of simultaneous pulsation VaDia Viewer assessment therefore may indicate too many irregular vacuum fluctuations. This can also happen in case of some automatic milking systems (robots). -
Page 5: Short Milk Tube (Smt) Vacuum Recording
The milk should flow from the teat to the milk line as fast and smooth as possible without turbulence. This is significantly influenced by the vacuum resistance (drop) of the cluster. Vacuum drop can be recorded by measuring SMT and LMT at the same time. Understanding VaDia Viewer data v1.0 5/12 www.biocontrol.no/vadia... -
Page 6: Interesting Examples
Below table lists a report of a milking with series 1 having different liners and shells than series 2. Interesting differences are recorded in machine-on-time, overmilking, teat-end vacuum and mouthpiece vacuum. MPC vacuum in series 2 is lower and better than series 1, which is too high, causing congestion. Understanding VaDia Viewer data v1.0 6/12 www.biocontrol.no/vadia... -
Page 7: Comparison Cluster/Liner, Take-Off Not Working Well
Which cluster/liner combination would you want? Later the farmer mentioned that he had the idea that the take-off setting of series 2 was not so good. ‘Not so good’ was here about 1:30 minutes overmilking! ≈1:30 Understanding VaDia Viewer data v1.0 7/12 www.biocontrol.no/vadia... -
Page 8: Zooming In To Individual Milkings
ZOOMING IN TO INDIVIDUAL MILKINGS Below is a nice example of a ‘normal’ individual milking assessment. Please refer to chapter 6 of the VaDia Viewer manual about definitions of milking phases and calculation methods or go to: http://www.biocontrol.no/index.php?root=comm&branch=vadia&leaf=manuals Further explanations and examples assume this basic knowledge. -
Page 9: Re-Attachment
A sudden large drop in SMT vacuum is probably caused by a liner slip and teatcup repositioning on the teat. Changes in the MPC vacuum fluctuations coincide with changes in SMT fluctuations, and denote the end of milk flow from the relevant teat. Understanding VaDia Viewer data v1.0 9/12 www.biocontrol.no/vadia... -
Page 10: A Heafer Milking
Pre-stimulation pulsation Chan1 = SPT, Chan2 = SMT. Red circle: pulsation goes to stimulation mode in the beginning of the milking. Chan1 Chan2 Graphics: VaDia by BioControl 16:27:45 16:29:12 16:30:38 16:32:05 16:33:31 16:34:57 16:36:24 Understanding VaDia Viewer data v1.0 10/12 www.biocontrol.no/vadia... -
Page 11: Zooming In To Pulsation
Even though the timing of the pulsation phases is not accurately indicated, the recording is accurate enough to give valuable information. 6.1. Effect of pulsation restrictors Below top picture is of pulsation without restriction, bottom picture is with restriction. Understanding VaDia Viewer data v1.0 11/12 www.biocontrol.no/vadia... -
Page 12: Insufficient Pulsation Capacity
B-phase can be irritating for cows and make them nervous. This seems to be caused by oscillations in the vacuum system, about 12 Hz. This may be a problem, but this can only be concluded when the explanation is found. Understanding VaDia Viewer data v1.0 12/12 www.biocontrol.no/vadia...
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