Merlin EVO SM User Manual

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USER MANUAL
EVO SM
WOOD MOISTURE METER
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for non-destructive measurement of wood products
with a roughly sawn surface
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USER MANUAL
Non-destructive
Wood Moisture Meter
EVO WW (wood work)
EVO SM (saw mill)
Hints of the manufacturer (read in any case before using the meter)
Thank you for buying a MERLIN Moisture Meter! Please read the instructions carefully. Helpful hints are marked “IMPORTANT”. See page 23 for a summary.
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1. Technical Specifications
EVO WW (wood work) EVO SM (saw mill)
Scanning depth
EVO WW : 20 mm EVO SM: 40 mm
Min. wood thickness
EVO WW :13 mm EVO SM: 25 mm
Density range
175 - 1075 kg/m³
Timber group
1 - 21
Resolution
0,1 % humidity; 0,5 °C/°F
Measuring range
2 - 30% wood humidity* (test area to max. 99%)
Temperature range
-10 °C to +60 °C (0,5 °C), 14 to 140 °F (0,5 °F)
Operating temperature
0 °C to 40 °C, 32 to 104 °F
Storage temperature
-20 °C to +60 °C, -4 to 140 °F without batteries
Temp. Compensation
automatically
Menu language
German, English, French, Spanish, Italian, Portuguese, Czech, Russian
Power supply
4 x 1,5 V AAA Alkaline batteries
Aut. Shut off function
after approx. 3 minutes
Power input
35 mA (incl. display lightning)
Display
128 x 64 matrix display
Dimensions
124 mm x 71 mm x 30 mm
Weight incl. batteries
175 g
Protection class
IP40
Scope of supply
EVO WW/SM, Soft case, batteries, user manual
* see page 19 Exceedance of measuring range
Version October 2016, Version 1.0
MERLIN Technology GmbH, Austria
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2. Description of EVO-meters
Application area:
The MERLIN® meters are designed for measurement of timber products with planed (EVO
WW) and roughly sawn
surface (EVO
SM).
Front:
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HOW DOES IT WORK
As soon as the sensor plate is in contact with the surface of the wood, measuring starts. The processor of the instrument analyses the sensor readings and displays the result as a percentage of moisture content in the wood
( E VO 5, 1 3 , 2 5 )
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3. Set up
The battery cover is located on the front side of the meter below the display and the buttons. To insert the batteries push the battery cover opener underside and connect 4 pcs. 1,5 V AAA batteries. Carefully put battery cover back on. Your meter is now ready to work.
IMPORTANT: When you first receive the instrument, check for loose parts. If you notice any rattling noises, don’t put the battery in, return instrument to your dealer. During transport the meter may have been damaged.
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4. Turn meter on
Turn the meter on by pressing the ON-
button and release it after approx. 3 seconds. The display flashes up. Now the serial number, software version and battery status appear. Afterwards the meter is ready for measurement. To turn
off the meter push the ON-button again and release it after approx. 3 seconds. The meter will turn off automatically after approx. 3 minutes if you do not push any button.
IMPORTANT: If there are no numbers displayed after depressing the ON-button
, press and release the ON button
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again, but with longer period between. Take care to push only one button! If the display remains off, check the batteries. The batteries could be discharged or disconnected
5. Display lighting
To turn on the display lighting push the
button. Attention! High power
consumption, use only if necessary.
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6. Timber table
* l = light (coarse), h = heavy (fin)
For many species the density of heartwood and sapwood differs. For the denser heart wood correct the wood group settings by (+1), for the lighter sapwood correct the wood group settings by (-1) to obtain more accurate readings.
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7. Measurement
The operative meter shows following values on the display:
Choose the wood species or dry density by pushing the  or  button. The wood species are in ascending order of dry density. Select a timber group by pushing
the ON/OFF Button . If you cannot find the desired wood species in the menu of the meter please use the timber table mentioned above (page 9).
Temperature
Minimum
thickness (wood)
Dry density
Wood species Wood moisture
Evaluation
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After adjustment of desired wood species press the meter with appropriate support pressure (ca. 4 kg) against the measured material. The actual moisture content is displayed instantly.
In addition an evaluation of the moisture appears on the display. There are four distinctions:
Dry - Optimal - Moist - Wet
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Below the lower measuring limit (below 2%) no evaluation is displayed. Division limits for the evaluation:
EVO
WW
EVO
SM
Dry 2 - 8 2 - 10
Optimal 8,1 - 11 10,1 - 15
Moist 11,1 - 17 15,1 - 20
Wet 17,1 – max. 20,1 – max.
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!Please note!
The values are recommendations without
guaranty and without liability for a
standard application and can be different
in each individual case, especially for non-
standard applications e.g. other values
are valid for damp room or laminated
wood. To be absolutely sure seek advice
from professional associations or the
norm as well as supplier specifications.
Take advantage of non-destructive wood moisture measurement by not only measuring at one point of the wood, but move the meter along the wood. The wood is absolutely dry or wet in only few cases. Using this measuring method you can quickly determine an average value of the timber or find too moist resp. too dry areas. In terms of measurement accuracy we recommend to measure along the fibre direction.
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IMPORTANT: For highest accuracy of the measurement, the surface of the boards should be planed and even. For very rough lumber the measured value could be too low and a special correction factor should be determined to obtain accurate readings. Should dry density of the measured wood deviate from average dry density (g/cm³) (control density selection), it is necessary to correct the density downwards (sapwood, rough grained) or upwards (heartwood, fine grained).
Wood which is smaller than the sensor pad or uneven is not measured accurately. The sensor pad differs in size depending on the model
EVO WW 45 x 103 mm
EVO
SM 66 x 103 mm
The entire sensor pad has to cover the measured material. The sensor pad has to be laying on a flat wood surface. The
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meter needs to be slightly pressed (approx. 4 kg) against the wood while obtaining measurements. Ensure that there is no metal or similar material underneath the wood. This can influence the measurement.
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8. Hold function (key icon)
In case you have no straight sight to the display (e.g. at overhead measurements) you can use the hold button (key icon) to save the actual measured value on the display. In this case all four button symbols change to the key icon. To continue with further measurements press any key.
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9. Determine wood group setting for
unlisted wood species
For accurate readings the wood group setting should be determined according to ISO 3130 or DIN 52183. For approximate readings, we suggest the following procedure:
Measure Length, width and
thickness of a block of wood in cm.
Multiply Length x Width x
Thickness to find Volume in cm³. Weigh the block of wood in gram and estimate the wood moisture content in %. For improved accuracy the wood moisture content can be determined by an oven dry test.
(100 x Weight/Volume) / (100 +
Wood Moisture Content x 0,5) = Density
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Example:
Length = 100 cm, Width = 12 cm, Thickness = 2,55 cm Volume = 3060 cm³ Weight = 1415 gram at approx. 15 % wood moisture content, Density = (100 x 1415 / 3060)/(100 + 15 x 0,5) = 0,43 g/cm³ Dry Density: 0,43 g
Choose wood density 420 by pressing the button  or .
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10. Exceedance of measuring range
The accuracy has been optimized for the main application range between 2 % and fibre saturation point of wood. Variation from the oven dry test may occur in case the measured value exceeds the fibre
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saturation point (Ex. max. = exceedance of measuring range). This variation might be high due to a very dry outer layer and a wet core inside the wood.
Measuring values in grey show you that the actual wood moisture is out of the measuring range mentioned above!
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11. What is also important
The meters can be used in ambient temperatures between 0 °C (32 °F) and max. 40 °C (104 °F). The meter can be stored without batteries at temperatures from -20 °C (-4 °F) up to +60 °C (140 °F). To avoid battery leakage it is advisable to remove the batteries if you do not use the meter for a long time. Avoid high moisture areas for storage. The meter can be affected by static electricity close to electrical wiring. Static electricity may be the reason for irratic readings - change location. Please handle the meter carefully. Remove dirt (resin or water) before measuring. The display of the meter may get damaged if dropped. Please remove water drops on your meter immediately.
Attention! Avoid compressive stress on
the soft case – it could turn on the device.
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The temperature of the measured
material should have approx. the same
temperature as the moisture meter.
Temperature differences of above 5°C
can affect the measurement results
negatively. The meter should adapt to
the climate for several minutes.
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SUMMARY:
Slightly press instrument towards
wood surface, when taking a reading
Select the appropriate wood species
(dry density) using the  or  button. Perform measurements along the fibre direction
To obtain averages or maximum
values slide meter with the grain across the wood
Measuring evaluation: the values
are recommendations with no guarantee and without liability. To
be sure catch up the council of the
norm or trade association as well as the supplier regulation
No foreign objects under the wood
(except polystyrene)
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If you do not use the meter for a
long time, remove the batteries
If batteries are low, a battery
symbol lights up
Always handle the meter with care
If a species is not listed on the
Timber Table, see page 17 to determine the wood species
At an exceedance of the measuring
range (measurement result on the
display is transparent) the
measurement
is above the
measurement range
Always remove dirt from the
measuring surface
The temperature of the wood
should be close to the temperature of the instrument.
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The sensor pad must be completely
covered by the measured material
Consider maximum measuring
depth and minimum wood thickness
You run an average measurement
based on the measurement surface
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12. Warranty
MERLIN warrants the EVO WW and EVO
SM moisture meters to be free from
malfunctions and defects in both materials and workmanship business to business for 6 months and business to consumer 2 years from date of purchase.
If the EVO
WW or EVO SM moisture
meter doesn’t function properly during
the warranty period due to defects in either materials or workmanship, MERLIN will, at its option, either repair or replace the instrument without charge, subject to the conditions and limitations stated herein. Such repair service will include all labor, as well as any necessary adjustments and/or replacement parts.
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Limitations -
This warranty becomes null and void if you fail to pack your EVO
WW or EVO
SM meter in a manner consistent with
the original product packaging and damage occurs during product shipment.
This warranty doesn’t cover: circumstances beyond MERLIN’s
control, service required as the result of unauthorized modifications or service, misuse, abuse, failure to follow
MERLIN’s operating or maintenance
instructions.
Repair or replacement without charge
are MERLIN’s only obligation under this
warranty. MERLIN will not be
responsible for any special,
consequential or incidental damages resulting from the purchase, use, or improper functioning of this equipment regardless of the cause.
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13. Nonliability
Such damages for which MERLIN will not be responsible include, but are not limited to, loss of revenue or profit, downtime costs, loss of use of the equipment, cost of any substitute equipment, facilities of services, or claims of your customers for such damages.
IMPORTANT-
We recommend to prevent faulty results in measurements please check your meter reading results within a adequate time period by the dry oven test according to DIN 52 183 Standard.
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REPAIR SERVICE - In case of malfunction please follow the instructions in this manual. If the malfunction is still in process send your instrument in original packaging to your geographical agent or directly to MERLIN.
Agents and employees of MERLIN are not authorized to make any modifications to this warranty or additional warranties binding MERLIN.
This warranty is personal to the
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14. Accessory (optional)
Test board PP2
It is a pleasure for us to inform you about our full range of MERLIN® moisture meters.
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15. Technical support
Local dealer
or
MERLIN® Technology GmbH Hannesgrub Süd 10 4911 Tumeltsham AUSTRIA Tel. +43 (0) 7752 71966 Fax +43 (0) 7752 71988 www.merlin-technology.com office@merlin-technology.com
Date / Stamp
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merlin-technology.com
MERLIN® Technology GmbH
Hannesgrub Süd 10
4911 Tumeltsham / Ried i.I.
AUSTRIA
Tel +43 (0) 7752 71966
Fax +43 (0) 7752 71988
office@merlin-technology.com
Seit 1995
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