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Humidity Detector FMW-B
Humidity detector to measure humidity in wood without any damage or punctures in the material, easy to use, large measuring range

The humidity detector of wood FMW-B determines moisture content by means of the capacitive method. In the humidity detector FMW-B an electromagnetic field quickly determines capacitance of wood. The moisture content in the wood is internally determined by means of a gross density.
The Humidity detector FMW-B has three important advantages:
  - It measures moisture content without damaging wood when it is placed on it.
  - Measurement results are quickly displayed.
  - Because of the high accuracy of humidity values a drying test will not be needed                        (real absolute humidity is measured/the Humidity detector FMW-B meets all the European standards EN 13183-1, EN 13183-2, EN 13556)
This humidity detector is very easy to use and it's very robust. The humidity detector FMW-B is an irreplaceable tool for both wood manufacturing and purchasing as well as for any professional sector where wood is considered a raw material. It is also capable of measuring a wide range of wood types (gross densities are stored in the detector).

Three-step measuring process:

  1. Turn-on and zero setting.

  2. Fitting of  wood thickness (selected from memory).

  3. Measuring and reading of moisture content.

Adjustments:

 - MAX, memory or Scan mode

 - Entry of the specific weight of wood from 250        to 1100 kg/m3 in 10 kg intervals

 - Relative values for building materials

Humidity detector FMW-B to measure moisture content without damaging the material.

View or print user manual of the humidity
 detector of wood MW-B
View / print user's manual of the humidity detector of wood MW-B.

Functionality

The humidity detector FMW-B for wood is guided by a microprocessor unit to quickly determine moisture content in wood and building materials. The humidity detector FMW measures moisture content when the lower frontal sensor is placed on the material for half a second. It is also possible to measure through paper or paints.
After introducing the unit weight (gross density) of any wood type, absolute humidity can be precisely determined in all wood types. With the humidity detector FMW, moisture content can be measured in many different wood types from 250 to 1100 kg/m3 (see chart below).
Humidity is determined by contact using a high-frequency technique. Measurements can be taken without damaging the material surface. Therefore, this detector is used specifically for finished products or for fast controls on site.

Measurement of the moisture content of wood with the Humidity detector FMW-B. The Humidity detector of wood FMW-B while measuring.

Put the humidity detector on the wood. Radiation penetrates wood up to 25 mm  depth to measure absolute humidity.
Characteristic density curves of wood are stored in the detector and can be selected very easily. Humidity can be determined for a specific wood type with high accuracy.

Characteristic curves of wood and basic instructions for measuring
Below you will find the characteristic curves in alphabetical order of all the most important wood types (they are stored in the humidity detector). We can also send another list with more wood types.

Softwood
- Fir
- Canadian Fir (east, west)
- Agathis (heavy, light)
- Alcere
- Alerce (European, Japanese, Russian)
- Alerce (American, East, West)
- Red Cedar
- Douglasie (heavy, light)
- Manio
- Pine (European, Nordic)
- Pine (light, heavy, Caribbean, American)
- Pine (European, Nordic, Kern, Spint)
- Pine (French)
- Pine Parana
- Pine Radiata
- Pine Sitka
- Pine Sugar
- Pine Weymouth
- Yellow wood
- Redwood (Californian, heavy, light)
- Sugi


Attention: All the characteristic curves of the wood types of this column and the adjoining one are stored inside the humidity detector FMW-B. They can be displayed by introducing the corresponding gross densities. A chart with all the materials and wood types will be included in the delivery.

To take into account:
While measuring moisture content in wood, the result will be more accurate on smooth surfaces. Moreover, the measuring value will grow on chips or knots. On the contrary, if measurements are taken on breaks, the humidity value will be lower in relation to the real humidity value (absolute humidity).
In both cases, you should measure near the area which is going to be measured.


Measurement accuracy:
Wood has an inhomogeneous composition. Therefore, oscillations in gross density can appear while measuring the same wood type. You will have to take diverse humidity measurements and the overall measurement result will be the mean value calculated by the detector. 


Wood surface:

On rough surface wood types, the result displayed in the humidity detector can be lower than the real value.


Fiber direction:
The result will not be affected if measurement is taken either in the fiber direction or against fiber direction. 


Measurement depth:
The measurement depth is 25 mm. If the wood is very thin (e.g. < 1 cm thickness) measurement will be carried out through the wood. The material on the wood will also be measured partially.


Measuring surface:
During the measurement, the measuring surface of the humidity detector has to be completely on the surface which is going to be measured in order to avoid mistakes with results.

Deciduous wood
- Abachi
- Abarco
- Birch (European)
- Abura
- Afrormosia
- Poplar
- Alone
- Amburana
- Avodire
- Baboen
- Balsa
- Bilinga
- Bodo
- Bomanga
- Bonkonko
- Bosse
- Mahogany (Bassam, Honduras, sapeli, sipo,         tiama)
- Chestnut (noble)
- Cherry-tree (European, American)
- Cedar
- Poplar
- Keruing (light, heavy)
- Dabema
- Danta
- Dibetou
- Durian
- Essessang
- Framire
- Freijo
- Ash (European)
- Fuma
- Beech (European, vaporized, non-vaporized)
- Igaganga
- Ilomba
- Iroko
- Jelutong
- Kapur
- Kosipo
- Krappa
- Kwarie
- Lauan (red)
- Limba
- Makore
- Mansonia
- Matakki
- Matoa
- Mengkulang
- Meranti (dark red, light red)
- Movingui
- Muninga
- Niangon
- Walnut (European, American)
- Satin walnut
- Oega
- Elm
- Okoume
- Padouk (African)
- Pear tree
- Peroba
- Peroba (pink)
- Banana tree
- Possentrie
- Ramin
- Oak (European, light, heavy, American,
  white, red, Japanese)
- Tasmanian Oak
- Willow
- Sapupira
- Sen
- Sepetir
- Seraya (red, white)
- Soemaroepa
- Tabaca
- Tchitola
- Teca
- Lime tree
- Tola branca
- Wane
- Yang

Building materials
For building materials it is possible to introduce "0" value. For this detector there is only a single characteristic curve (mean characteristic curve). With the humidity detector FMW-B you will be able to easily determine humid zones in floors, walls, etc. for a relative measurement in wet or weak areas.

Technical specifications
Measurement ranges 2 ... 30 % H2O for wood
0 ... 60 % H2O for building materials.
Resolution 0.1 %
Accuracy 0.5 % (of the reference material)
Measurement depth adjustable from 10 to 30 mm (1 mm intervals)
Measuring principle capacitive measurement
(without contact)
Memory 50 measurement values,
maximum value displayed
(Max Hold function)
Temperature range 0 ... 50 °C
Power 1 x 9 V battery
selectable Auto Power Off
to protect the battery
Dimensions 180 x 80 x 35 mm
Weight 260 g battery included

Delivery content:
1 x humidity detector of wood FMW-B,
1 x battery, 1 x protective cover, user manual and additional indications to measure humidity

Technical information of the humidity detector FMW-B. return to homepage
Here you will find an overview of all the measuring instruments available at PCE Instruments.

Contact:
PCE Instruments UK Limited
Units 12/13 Southpoint Business Park
Ensign Way, Southampton
United Kingdom, SO31 4RF
Phone: +44(0) 23 809 870 30
Fax: +44(0) 23 809 870 39

Contact:
PCE Americas Inc.
711 Commerce Way suite 8
Jupiter 33458 FL
USA
Phone: +1-410-387-7703
Fax: +1-410-387-7714

This page in German Humidity detector FMW-B in German. in Italian Humidity detector FMW-B in Italian. in Spanish Humidity detector FMW-B in Spanish. in Croatian Humidity detector FMW-B in Croatian. in French Humidity detector FMW-B in French. in Hungarian Humidity detector FMW-B in Hungarian in Turkish Humidity detector FMW-B in Turkish in Polish Humidity detector FMW-B in Polish in Russian Humidity detector FMW-B in Russian in Dutch Humidity detector FMW-B in Dutch in Portuguese Humidity detector FMW-B in Portuguese in Portuguese Humidity detector FMW-B in Portuguese

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