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FMI systems
The FMI systems are in-line moisture meters developed by Brookhuis Micro-Electronics in Enschede (the Netherlands) which determines the wood moisture in the production line contact-free, with a view to sorting or selecting wood. It consists of a control unit and one or more sensors. These sensors measure wood moisture content while the wood travels past them without making any contact.
The FMI-III system can easily measure the wood moisture content at a speed of 200 pieces a minute with systems suitable for transversal transport, or 600 meters a minute with systems suitable for longitudinal transport.
The FMI-IV system is the latest development from Brookhuis. It is developed as the most versatile and fastest in-line moisture content measuring system ever and measures up to 300 pieces a minute. The measuring rate of FMI-IV is 500 measurements per second which brings the minimum measuring time for a single plank or board down to 10 milliseconds only.
Control unit FMI-IV and FMI-III
FMI Sensors
Depending on the machine configuration, the following sensor types are available
FMI L-type sensors for longitudinal wood transport
FMI X-type sensors for transversal wood transport
Wood in longitudinal transport
Wood in transversal transport
Sorting
One of the most important aspects of a FMI system is its ability to sort wood, ensuring that only wood with the right moisture content is released for further production. It is also possible to set a number of limiting values so that wood can be sorted on the basis of moisture content. Sorting can also be carried out by hand with a marking system or, if it is within the machine's capabilities, the FMI system can also control a fully automated sorting system.
Automation and system solutions
The expertise and the product range of Brookhuis Micro-Electronics extend far beyond moisture measurement and sorting alone. A comprehensive solution can be supplied with electric, pneumatic and mechanical components. Systems can be delivered turnkey as well. In 2007 Brookhuis was choosen as sawmill supplier of the year by the magazine "Holzkurier".