Brookhuis FMD Bruksanvisning

Les nedenfor 📖 manual på norsk for Brookhuis FMD (18 sider) i kategorien Måleutstyr. Denne guiden var nyttig for 2 personer og ble vurdert med 4.5 stjerner i gjennomsnitt av 2 brukere

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Tursdale Technical Services Ltd
Unit N12B
Tursdale Business Park
Co. Durham
DH6 5PG
United Kingdom
Phone: +44 ( 0 ) 191 377 3398
Fax: +44 ( 0 ) 191 377 3357
info@tursdaletechnicalservices.co.uk
http://www.industrial-needs.com/
Manual
Humidity detector for building materials
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2
1. Characteristics ............................................................................................................................................. 3
1.1 Unit density ................................................................................................................................................. 3
1.2 Moisture content ........................................................................................................................................ 3
1.3 CEN (European Committee for Standardization) .................................................................................... 3
1.4 In Practice ................................................................................................................................................... 4
2. Electric moisture measurement ................................................................................................................. 4
2.1 Outline ......................................................................................................................................................... 4
2.1.1 Wood species, building materials and paper ................................................................................... 4
2.1.2 Temperature ........................................................................................................................................ 4
2.1.3 Accuracy .............................................................................................................................................. 5
2.1.4 Measuring depth ................................................................................................................................. 5
2.1.5 Measuring methods ............................................................................................................................ 5
2.1.6 Measuring direction ............................................................................................................................ 5
2.1.7 Measuring surface .............................................................................................................................. 5
2.1.8 Measuring range ................................................................................................................................. 6
2.1.9 Preservatives ....................................................................................................................................... 6
3. Wood species ............................................................................................................................................... 6
4. Building materials ...................................................................................................................................... 17
5. Paper ........................................................................................................................................................... 18
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3
1. Characteristics
In this chapter the unit density, the oven-dry method and the moisture measurement with the Micro-Electronics
moisture meters are described.
1.1 Unit density
The formula for the unit density is:
The unit density is used for moisture measurements with the FMW-B / FMW-T moisture meters.
For wood, the FMW-B / FMW-T are set at the average unit density applicable for a moisture
content of 0%.
For building materials and paper, the FMW-B / FMW-T is set at the reference line.
1.2 Moisture content
The average moisture content of a sample is determined using the oven-dry method.
For wood, a sample of approx. 100-200 gram is weighed and then dried at 102-105 °C, until
the mass of the sample is constant.
For building materials and paper, we refer to the manual for the relevant measuring
equipment.
The formula for determining the moisture content according to the oven-dry method is:
The Micro-Electronics moisture meters calculate the actual moisture content, as determined by the
oven-dry method.
1.3 CEN (European Committee for Standardization)
EN 13183-1 Round and sawn timber Method of measuring moisture content Part 1: Method for

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Kategori: Måleutstyr
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