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1) The contacting state and pressure between the pressboard and the electrodes of the capacitive sensor in dielectrometry system can affect the measurement of moisture in pressboard.

2) Also, its white-painted cabinets were pressboard, and there was a brick chimney rising up from the furnace that took a whole corner out of the room.

3) The trace moisture in pressboard can be measured actually by using the devised capacitive sensor and interface circuit.

4) The moisture distribution measurement of pressboard in two dimensions is discussed as well.

5) A system of moisture measuring in pressboard during drying is introduced.

6) Since being launched into market, the industrial pressboard series has been greatly appraised by relevant experts and all customers.

7) The design method of hot-press for producing the hard pressboard cylinder is introduced and the calculation method of its structure strength is presented.

8) A moisture measuring system, including the sensor, can be applied in measuring moisture in pressboard of transformer coils during the drying process.

9) All research above can provide valuable help for measurement of trace moisture in transformer pressboard .

10) However, in coaxial oil-paper combination insulation when the thickness of insulation exceeds a certain value the field strength within the pressboard under polarity reversal will increase instead.

11) The thesis presents the measurement principle and its disturbance factors, as well as the method to obtain the complex permittivity of pressboard with a lumped circuit model.

12) In plate-plate oil-paper combination insulation, increasing the thickness of insulation pressboard can reduce the field strength in oil and pressboard .

13) The dielectrometry technique, which is not yet mature, can be used to detect moisture content in pressboard.

14) Therefore, it is very important to monitor the moisture condition in pressboard during both manufacture and performance process of a transformer.

15) The dielectrometry method can be used to measure moisture distribution in transformer pressboard since the moisture affects the dielectric properties of pressboard.

16) The results show that some factors like charging voltage, charging time,(http://sentencedict.com/pressboard.html) geometry layout and the oil and pressboard condition may have some impact on the polarization and depolarization current.

17) The reliability and precision of the interface circuit can meet the needs of measurement of moisture content in pressboard .

18) In rod-plate oil-paper combination insulation, more indeterminacy exists in the relation among the field strength under polarity reversal, the size and position of pressboard .

19) The dielectrometry method can be used to measure moisture dynamics in transformer pressboard since the moisture affects the dielectric properties of pressboard.

20) A calibrated expression relating permittivity and moisture content of oil-free pressboard is presented by using experiment data and dielectric frequency spectra.