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Ratio calculation, and may be selected in
the range from 0.0" to 18.0" Hg, in .1" Hg
increments, when the designated Display
Unit is " Hg. When the Display Unit is kPa,
the LCP may be selected from 0 to 60.9
kPa, in .3 kPa increments. See the
section on Milk/Rest Ratio for further
explanations of the Liner Collapse Point.
Display Units
Display Units either " Hg or kPa are used
during the conversion of vacuum
measurements to display (output) format.
This includes all vacuum measurement
data and Liner Collapse Point. Please
note: When using the Digidata.exe
Windows program to view the Digimet
3000 data, it is possible to mix different
Units, for example, you could measure
some items using kPa and others using
“Hg. But calculations made, like comparing
pulsator max vacuum levels, will not be
correct. To get correct calculations, use
ONLY “Hg or kPa for all measurements.
Type Pulsation
Type Pulsation is a setting to determine
how the Pulsator Ratio and M/R Ratio
storage slots will be identified. In the Dual
setting, storage slots will be identified as
1A, 1B, 2A, 2B and so on to 15A and 15B.
In the Single setting, storage slots will be
identified as 1, 2, 3, and so on to 30. In
order to change from one storage type to
another, all the data must be cleared that
is presently stored.
Auto Shutoff
This constant allows the user to determine
how long the unit will run without
automatically being shut off. It can be set
from 0 minutes to 30 minutes.
Vacuum Level Function
The Vacuum Level Function measures a
relatively stable vacuum input, which may
vary due to loading of the vacuum system
with pulsators, controllers and other
milking machinery. The Vacuum Level
Function is comprised of the following
measurements:
Average Vacuum
Maximum Vacuum
Minimum Vacuum
Vacuum Fluctuation
Average Vacuum level is calculated by the
use of a digital filter which presents the
average value of the vacuum line. Several
display update periods may be required to
display the actual Average Vacuum level.
Because of the averaging filter, there will
be an elapsed time before the calculations
(and the display) reach the Average
Vacuum when the Function is first
engaged. Likewise, there will be a delay
for the measurement to return to zero if the
vacuum source is removed.
Maximum Vacuum and Minimum Vacuum
are absolute measurements in that they
represent the overall minimum and
maximum vacuum pressures encountered
throughout the entire measurement
function. These measurements can be
"reset", at which time the output will
represent the absolute minimum and
maximum vacuum since the reset
occurred. When the Vacuum Level
Function is first engaged, these two
measurements are essentially in a "reset"
state in that they will monitor vacuum since
the Function was engaged. Note:
When Vacuum Level function data
appears on graphic printouts using the
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