| 摘要 |
The essence of the moisture determination method is that the sensor makes contact with the fibrous material or bulk goods to be examined. While the sensor is in contact with the material to be examined, it is preheated by pulsing to 40-90 DEG C and then to 90-140 DEG C by main pulse heating. The main heating time of the sensor is used to assess the moisture content of the material to be investigated. The moisture determining apparatus comprises a main measurement bridge (1) and an additional measurement bridge (2), whose limbs incorporate resistors (3, 4, 5, 6, 7, 8) and a sensor (9) in the form of a pulsed thermal radiator as a common limb of said bridges. Incorporated in the latter arm is a switch (10). The diagonals of the bridges (1, 2) incorporate a zero device (11) in such a way that, in one position (I) of the switch (10) a signal from bridge (1) arrives at the zero device (11) and in the other position (II) a signal from bridge (2). Connected to the output of the zero device (11) is an input (19) of the control section (20), whose outputs (23, 24) are connected to the switch (10) and to the recorder (25). <IMAGE>
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