Apparatus for measuring moisture parameters of porous material and method of moisture propagation in porous materials

摘要

Apparatus (1) for measuring humidity parameter porous mass comprising a hinge (11) for the test sample, a digital scale (5) above, the stationary waveguides (8, 8a) of the microwave radiation and under the hinge is arranged container (14) with water (15 ) and from the waveguide and the weights are installed computer cable, whereby between the waveguide and the computer is arranged voltmeter (18) when the container (14) is arranged as the stationary part and the apparatus further comprises a base plate (2) which is vertically fastened a pair of vertical guide rails (3) on which is slidably mounted frame (4), scales (5), which is behind a screw sleeve, which is elongated threaded drive rod (16) mounted in the engine (6) and drive rod ( 16) is up freely rotatably mounted in the upper housing (24), the motor (6) and a waveguide (7) are connected with a computer (23). Method of measurement will contain repetitive and fast consecutive steps of weighing, calibration, sample position, crossing into different positions relative to the waveguides and the level in the reservoir with the appropriate switching on and off of the microwave radiation and enables the determination of a matrix An *, where each passage of the sample means getting navlhací curves.