(Received 29 May 2008; accepted 13 January 2009)
Published Online: 2009
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Fiber optic temperature sensors were investigated as an alternative to thermocouples for measuring the temperature inside pieces of timber during kiln drying. Fiber optic sensors were thought to have some advantages over thermocouples in standard hot air drying, and this increased measurement accuracy would be beneficial for validating the Scion single-board drying model. The fiber optic sensors showed some improvement over the thermocouples, mainly in not conducting heat into the board from the kiln atmosphere. Overall the two types of sensors behaved similarly, and both showed quite different behavior to predictions from the single-board drying model. Due to their higher cost and fragility, the fiber optic sensors are not recommended for applications such as this, where thermocouples could be used instead.
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