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Humidity control by Automatic Weight Loss
System ‘AWLS’
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In the past years focus on incubator controls has
mainly been on controlling temperature in
the machines at accurate levels, - probably
the most important feature in large scale
single-stage incubation.
However, after implementing the heating and cooling
coils in the setter trolleys, the Set &
Hatch equipment was able to control the
temperature even in the biggest cabinets on
an extremely accurate level, resulting in
outstanding hatching performance.
To
improve the hatching results even further,
LINCO started to develop an evenly accurate
humidity control system, with the purpose of
ensuring the optimal weight loss of the eggs,
- - and now we are proud to introduce
Automatic Weight Loss System (AWLS).
Technical
background:
Intensive
research proves the high importance of
getting the humidity set-point adjusted to
the right level within a few hours after
setting the eggs.
Several factors influence the weight loss of
an egg, among those:
-
The
size of the egg
-
The
shell quality
-
Level
of ventilation
-
Humidity
level in the ambient
-
Air
temperature in the ambient
-
Type
of humidity supply system
-
Airflow
pattern
-
Airflow
velocity
-
Etc.
.
. but in industrial incubation environments,
at average parameters, it has proven
difficult to get below a RH% of 35 (without
artificial humidity reduction) and under
these conditions the maximum weight loss per
day (24 hours) is approx. 0.7%, (Fig.1)
Fig.1
Fig.2
As
the optimal weight reduction for a hen egg
is 11.5%, it will demand 16.5 days of
maximum weight reduction (0.7%) to reach the
required loss, - thus leaving only 1,5 day
of margin to get to the right set point in
manually operated systems.
Fig.3
With
‘AWLS’, the humidity level will
be adjusted to the perfect level already
after 2 hours of incubation, and the
required weight loss will always be reached
before transferring the eggs to the hatcher.
Benefits:
When using the “AWLS” all eggs will
reach optimum level of weight loss, and the
hatch will produce more and uniform chicks
of top quality, regardless different eggs
qualities have been incubated in different
setters.
The improved hatchability is found with all
ages and types of eggs, - but especially by
incubation of eggs from old Parent Stock the
‘AWLS’ proves its value.
Technical
design:
The
‘AWLS’ is operated with the LINCO
Professional® Control System.
The weight loss is constantly monitored from
2.520 eggs, ensuring very accurate measuring,
results. The LINCO ‘AWLS’ is operated
from the hour of setting to the hour of
transferring.
A turning frame section in a setter trolley
is in both ends suspended on electronic load
cells, and the weight of the 2.520 eggs is
measured once in every turning period. The
humidity level is adjusted (if required)
immediately after every weight check.
Monitoring
a complete turning section means that the
collected data relate to eggs placed all the
way from top to bottom in the trolley, -
this combined with the big quantity of eggs
monitored ensures that adjustments are made
on a solid base of intelligence.
The trolley with the load cells is easily
identified on its blue colour top frame.
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