Schaller humimeter WLW User manual

User manual
humimeter WLW
Moisture meter with ram electrode
for round timber & split logs
Version 1.1_en
© Schaller GmbH
2013

page 2 Version 1.1_en
Short instruction manual
Inside the ram electrode a temperature sensor
is situated, which measures the temperature of
the wood. Let the sensor assimilate to the
temperature of the wood, because the
measured temperature is used for the internal
material compensation.
To switch on the device, press the key for
three seconds.
With the standard nails the wettest part over the
whole measuring depth will be measured. If you
need the water content in a defined measuring
depth, you should use the isolated green nails
(article number 11482), because they are only
measuring at the points.
Important: You have to remove the bark
before you can start to measure.
The measuring depth should be a quarter of the
wood diameter. In the worst case you have to
cut away a part of the diameter. Choose a part
of the wood, WITHOUT bark, knots, pitch
pockets or cracks and drive the ram electrode
in the right angle to the grain into the wood.
Hold the top of the electrode with one hand,
take the handhold with the other hand and push
down the handhold with active force. Drive the
nails about 2 cm deep into the wood.
Tip: Statistically, the spot that shows best
the average moisture of the wood is at about
20% of the total wood length.
Plug in the sensor cable into the socket of the
WLW. Take care of the correct position and fix it
with the nut. Select the correct sort of wood by
pressing the up or down key.
Now you can see the actually wood moisture and the temperature on
the display.

Version 1.1_en page 3
Now you can save the measurement by
pressing the key in the saving level. Press
the (Rolling Menu) key to enter the saving
level. When the digit in front of the disk symbol
increases, the saving was successfully.
Tip: Take a few logs on different positions of
each piece of wood you intend to measure,
and the humimeter will calculate
automatically the average value of the
series.
If you press the key, you can add extra
information to the active log series.
Push out the ram electrode of the wood.
Attention!! Risk of injury
List of calibration curves
Pressing the or key in the measuring for
at least 3 seconds and a list with all available
sorts will appear. Select your sort by pressing
or and confirm it with the key. The
measurement will continue automatically.
Measuring Value
The measure value which is shown at the display of your humimeter
WLW, represents the “wood moisture”. So there is no conversion
form the “water content” into “wood moisture” for use. It is also
possible to change the value into “water content”. If you need this,
contact [email protected]
Wood Moisture
The wood moisture is declared as the amount of water in a wood,
which stands in relationship to the weight of the dried wood. For
example: You have piece of wood with 1kg and 66,7% wood
moisture. So you have 0,6kg wood and 0,4% water in this piece. The
0,6kg represents 100% based on the dry mass.
Water content
The water content is declared as the amount of water in a wood,
which stands in relationship to the whole weight of the wood. Same
example: You have 1kg Wood with 40% water content; the wood
consist of 0,4kg water and 0,6kg wood.

page 4 Version 1.1_en
Sort of wood
Main Group Sub groups
Beech
Rubber Eucalyptus
Oak
Mahogany
Wenge
Alder
Acacia Alstonia Birch
European
chestnut Horse chestnut
Cherry
Tree Walnut
Okan
Ash
Keruing
Spruce
Pine
Balsa Yew Tree Stone Pine
Larch
Maple Douglas Fir
Hemlock Cotton Wood Elm
Fir
Ceiba Linden
Willow
Pear Hickory Olive wood
Ramin Teak
Declaration: The main group of wood is the wood sort, which is
shown on the measurement display of your humimeter WLW. Do you
want to measure wood, which is not in the list of the main group, you
should search it at the sub groups in the table above. Then use the
wood of the main group for the measuring. For example: If you want
to measure “Cherry Tree”, you have to choose the “Alder” wood at
you device.
Valid measuring Range
If the measure value is
grey, the standard valid
measuring range is
exceeded (limits see
Table). In this case the
accuracy will be
decreasing.
A blinking measuring value shows you the upper end
of the measuring range.
Beech
47,1%
Oak 47,1%
Alder 66,7%
Ash 53,9%
Spruce
66,7%
Pine 53,9%
Larch 47,1%
Fir 58,7%
Willow
66,7%

Version 1.1_en page 5
View of the instrument (12626)
WLW Hammer (12630):
Hand electrode (12847):
Rolling Menu /
HOLD-key
Power key
Keys to change
the wood sort
Elektrodes of
ram electrode
Wood moisture
Temperature value
Sort of wood
Sensor cabel
USB interface
Batteries case
(flip side)
Sensor cabel
Elektrodes of
ram electrode

page 6 Version 1.1_en
Next wood type
Previous wood type
Off (3 sec.) Backlight
View last Logs
ave Logs
Off (3 sec.) Backlight
witch down
witch upper
Open this menu / OK
Keypad symbols
Measuring window:
Rolling Menu
Power ON / OFF
Switch upper
Switch lower
Save
Hold
Watch the
saved data
Suppliers data
can be added
Menu:
Enter
Switch upper
Switch lower
Exit
Enter numbers
Enter letters
Next or right
Left
Yes
No
Shift
OK
Menu level overview
Wood selection menu
tore menu
Main menu
Edit Logs
Manual Logs
Clear Logs
Print Logs
Last Log
All Logs
Clear Logs
Send Logs
Manual Logs
Clear Logs
Options
Status
Options
Date / Time
Log Time
Language
Unlock
°C / °F
o Userlevel
BL On Time
Auto Off Time
Material calib.
Password
Reset

Version 1.1_en page 7
Running the instrument
Switch on the device: Press the key for three seconds.
Change the kind of wood: Press the or key.
Set the clock: press two times the key - Options – Date / Time
Here you set the date and the time by pressing (YY.MM.DD).
When you entered the Year push the key to get to the month and to
the day. Press the key again to get to the time. If you entered date
and time confirm it by pressing .
Hold the measure value: Press the key in the save mode
(Function must be activated in the Datalog Time menu)
Display-Background lighting: Press the key; Backlight will turn
off automatically after 20 seconds. Backlight will be activated by
pressing any key. Furthermore the Power off time is reset to four
minutes. (Both times can be modified in the options menu)
Power off: Press the key three Seconds in the measuring
window; the device will be switched of when you leave the key. The
device also switched off automatically, when no key is pressed for
four minutes. (Time can be changed.)
Activation of the “super user” function
2 times - Options – Unlock
Enter the 4-digit password by using the button (standard is the 4-
digit serial number) and confirm by pressing the button.
Changing the Userlevel
Changing from advanced user to single user:
Make sure that you have activated the “super user” functions
according to the instructions above. Afterwards change to the menu
and choose „Options“.
In the submenu please select „o Userlevel“ (2 times - Options – o
Userlevel)
Confirm by pressing the button. Now the single user is activated.

page 8 Version 1.1_en
Transfer saved data to the PC
To send your saved logs to the PC, connect
the humimeter device to your PC using the
USB cable that was delivered with your
device. Carefully loose the protection cap on
your humimeter and plug in the USB mini B
connector. The bigger connector has to be
connected to a USB slot on your PC.
Start the LogMemorizer software on your
PC and switch on your humimeter WLW.
The data transfer can be started on your
humimeter or on the software.
Starting the data transfer on the humimeter:
Press the key until you reach the menu
(see image on the right). Then choose
„Send Logs“ and confirm by pressing the
key. Now choose „Manual Logs“ and
confirm with again. All saved logs will be
sent to your PC.
Starting the data transfer on your PC:
Press the button „remote control“ in the
LogMemorizer software. A drop-down menu
with several options opens (see image
below).
For transferring the data you can select
„Import last manual log“ (the last saved
measuring series is transferred) or „Import
all manual logs“ (all saved logs are
transferred).
If you click on one of these menu items, the
transfer starts immediately.
For the basic adjustments of the software
please look through the instructions on the
LogMemorizer CD.

Version 1.1_en page 9
Print saved data
To print your saved data, connect the device
to the printer using the printer cable that
was delivered with your device. Carefully
loose the protection cap on the humimeter
WLW. At first plug in the side of the
connector with the close plastic casing at
the humimeter WLW. Then switch on the
device.
Not till then the other side of the cable has
to be plugged in at the printer. Switch on the
printer by pressing . Now the green LED is
blinking. If it does not blink, please change
the batteries and try again.
Press the button at your humimeter until
you reach the menu (see image on the
right). Choose „Print Logs“ and confirm by
pressing .
Now you can select if you want to print the
last saved measuring series or all saved
measuring series (logs).
Confirm by pressing again. The selected
logs are printed out now.
To save paper, please think of clearing the
data storage regularly.
Exemption from liability
For miss-readings and wrong measurements and of this resulting
damage we refuse any liability. This is a device for quick
determination of moisture. The moisture depends on multiple
conditions and multiple materials. Therefore we recommend a
plausibility check of the measuring results. Each device includes a
serial number and the guarantee stamp. If those are broken, no
claims for guarantee can be made. In case of a faulty device, please
contact Schaller GmbH (www.humimeter.com) or our dealer.

page 10 Version 1.1_en
Changing the batteries
Your new device is provided with batteries. Please find enclosed the
manual for changing of batteries:
At first remove the rubber protective housing. For that, hold the
rubber housing at the upper side and pull it over. If your humimeter is
provided with an optional USB port, you have to remove the
protection cap before. Press with your finger onto the arrow of the
battery cap und pull it back.
Remove the empty batteries. Put four new batteries in the device.
Make sure that the position of the battery poles is correct. Press
down the batteries and close the cap. Fix the rubber protective
housing at last.
If the battery symbol appears in the measuring
window resp. if a critical charge of battery is
shown in the status, the batteries have to be
changed IMMEDIATELY. If you do not use
your humimeter device for a longer period,
remove the batteries. For eventual resulting
damages we cannot provide any warranty.
Care instructions
Do not drop the instrument or expose it to excessive temperatures.
Clean it only with fuzz-free, dry cloth. The device is not waterproof.
The frequency for technical check of the instrument depends on the
use and required level of accuracy.
For a fee, Messtechnik Schaller GmbH can also carry out a
calibration at their factory. In this case you will receive a calibration
certificate.

Version 1.1_en page 11
Technical Data
Measuring range / Solution
Water content 7 to 150% / 0,1%
Temperature °C -10 to +60°C / 0,1°C
Temperature °F +14 to +140°F / 0,3°F
Operating temperature range 0°C to +50°C / +32 to +122°F
Storage temperature range -20°C to +60°C / -4 to +140°F
Temperature compensation automatically
Value storage appr. 10.000 measuring values
Languages German, English, French, Italian,
Russian
Power supply 4 pcs. 1,5Volt AA Alkaline batteries
(appr. 1000 measuring cycles)
Power off time selectable, standard 4 min.
Power consumption 60mA (with LED-Backlight)
Display 128 x 64 matrix LC-display,
with LED-Backlight
Dimensions 147 x 75 x 30mm (without elektrode)
Weight (including batteries) 265g
Weight Ram electrode 1500g
Protection Category IP 40
Scope of delivery humimeter WLW,
rubber protection cover,
4 x 1,5Volt AA Alkaline Batteries
Optional WLW ram electrode + plastic case
(12846)
WLW hand electrode (12847)
WLW hammer (12630)
plastic case (11929)
20 pieces replacement tips without
insulation 40mm (12146)
20 pieces replacement tips without
insulation 60mm (11775)
2 pieces replacement tips with
insulation 60mm (11482)

page 12 Version 1.1_en
!IMPORTANT! Essential reading
Common reasons for incorrect measurements
•Product temperature out of application range
Material below 0°C resp. above +50°C (32 to 122 °F) may
cause faulty measurements..
•Not adjusted temperature of the device
Let your humimeter BLW adjust to the surrounding temperature
of the material to be measured for at least half an hour.
A very high temperature difference has a negative effect on the
stability of the measurement results.
•Measuring through the bark.
The accuracy is sinking rapidly (also with the isolated nails)
•Wrong wood type
Before you measure your sample, double check the correct
selection of the chosen wood type.
•Direct sun radiation.
•Frozen, mouldy or bug damaged wood
The accuracy is sinking rapidly (also with the isolated nails)
•device shows a moisture value even though it has not been
beaten in the wood
Under particularly wet weather conditions the device can show
wood moistures without hammering the hammer in the wood.
The value returns to 0.0% when the humidity decreases. (Store
the unit in accordance conditions)