| 摘要 |
A probe ( 10 ) includes a base element ( 12 ), formed from an inflexible material and having one or more unitary rigid elongate prong members ( 18 ), heating and sensing elements ( 20 ) and ( 22 ) supported on the base element ( 12 ), and elements for electrically energizing at least the heating element ( 20 ). The heating element ( 20 ) is formed on the or one prong member ( 18 ) so that, when energized, the thermal energy output by the heating element ( 20 ) can be sensed by the sensing element ( 22 ) to determine at least the thermal conductivity of a substance in which the probe ( 10 ) is inserted.
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