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The L-Series kiln controller is set up like a modern,
microprocessor based, electronic circuit which
assures an exact measurement of wood moisture
content, with automatic adjustment of kiln
temperature, without need of any regulation by
the user and without using any correction table
for wood temperature, because all corrections are
automatically made by the microprocessor. This
instrument has been specially designed to assure
long-time endurance and great simplicity of use:
these targets have been achieved using high-quality
materials and an large LCD display able to give all
necessary indications at a glance.
To regulate the kiln climate the user only needs to
set the required temperature values for wet and dry
bulb and L-SERIES will automatically manage the kiln
heater, compressor, (and optional power vents and
spray,) in order to reach the requested settings for
the dry and wet temperature bulbs (probes).
Use the dierence between DBT and WBT to nd the
relative humidity (RH) and EMC of the air, using the
tables in the kiln operating manual. See Figure 3-6.
The wet bulb is mounted in a bracket. Mount the
bracket on the wall at a convenient height, roughly 4
feet (1.2m) o the oor is ideal so that it is receiving
air ow from the circulating fans. The wick material is
put in the bottle, and looped through the opening of
the bottle and 2” (50mm) is slid onto the sensor. The
bottle should then be lled with ltered water.
The wick material will become rough over time.
When this happens remove and discard the
damaged material. Then pull more wick out of the
bottle.
WARNING: The wick surrounding the wet bulb
must be maintained always wet. The wet bulb
cannot be in the water and must be positioned
close to the dry bulb, in a position in the air ow.
If these conditions are not satised, the control
could regulate the kiln for a too dry setting,
damaging the wood to be dried.
KD150 Kiln Controller
How KD150 Control Works
Figure 2-1 KD150 Controller
Wet Bulb Installation
Figure 2-2 Wet Bulb
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