ELECTRONIC CONTROL UNITS
ELWOOD BY CET is the new trade
mark which stems from the collaboration of experts who have been
operating in the wood drying sector for twenty years and a manufacturer
who is occupied in the measurement and data transmission sector.
The experience acquired on the field with wood dryer manufacturers
allows us to assess in depth the characteristics and the way in
which a good control unit must operate.s.
R33-I e R33 PLUS
- MOD. R1000
- MOD. R2000
- VAPORWOOD 2000
THE TECHNOLOGY applied uses the
most modern solutions in the electronic field in programming and
data transmission both as far as the hardware and the software are
concerned. We are confident of the quality of the product and we
are interested in establishing a business relationship and a collaboration
with any manufacturer wishing to develop highly personalised products.
THE MEASUREMENTS CARD - It is clear
that to carry out any drying program one requires that the following
measurement values in the kiln be as accurate as possible: wood
humidity, temperature and relative humidity. Great attention has
thus been paid to the creation of the basic measurement card which
supplies data to the R33 and R2000 control units.
ACCURACY IN THE WOOD HUMIDITY MEASUREMENT
- great accuracy is obtainable solely with the wood weighing method,
a method which unfortunately is very difficult to apply from a practical
point of view. A good alternative is the measurement of electric
conduction using electrodes placed in the timber. There are several
factors which determine the measurement in addition to the water
quantity, presence of minerals, type and density of the material
etc. Furthermore, one must consider the factors which derive from
the type of installation itself such as the presence of magnetic
fields, difference in potential between the piles of timber and
the ground plates, etc. The knowledge of these phenomena, the need
of reducing all unwanted effects and the limitations of the old
systems used until the present have encouraged us to create a new
system in which the combination of a method and software processing
has allowed us to obtain good results for a measurement range between
6% and 120%.
FLEXIBILITY - There are two types
of cards depending on the method used to measure the relative humidity.
One uses a cellulose plate sensor and the other the dry/humid bulb
MEASUREMENT CALIBRATION - The system
is equipped with a practical calibration program which allows the
tester to correct any measurement errors caused by environmental
DATA TRANSMISSION - All of the
information which is collected must be converted to the digital
system to be able to be transferred without any mistakes to the
control unit which can also be positioned at a distance.