A simple approach for measuring high surface resistivity of insulating materials using standard laboratory equipments is proposed. The developed system consists of a DC power transformer, a concentric ring probe assembly and a digital multi-meter. The DC power transformer can provide either 500V or 250V DC signal. The probe assembly is constructed according to Danish Standard (DS/EN 1149-1:2006). The multi-meter (Agilent 3440 1A 6) is used to measure the micro voltage over a known resistor which is serially connected with electrodes in the probe assembly. In order to obtain reliable measurements, two testing approaches, named on-off power sequence approach and alternating polarity sequence approach, are proposed and tested. The sample's surface resistivity is then calculated based on averaged measurements. The developed system and proposed methods have been extensively tested for different materials, source voltages, and serially connected resistors. The testing results showed that the developed system and methods can provide a reasonably accurate measurement of surface resistivity of insulating materials in a robust and economic manner.
[1]
Effect of solvents on surface resistivity measurement of polymer films
,
1987
.
[2]
Peter R. Griffiths,et al.
Comprar Fourier Transform Infrared Spectrometry | James D. Winefordner | 9780471194040 | Wiley
,
2007
.
[3]
R. R. Bresee,et al.
Using field theory to measure surface resistivity of high-resistance polymeric films
,
2001
.
[4]
K. Blary,et al.
Spin-coated conductive polymer film resistivity measurement using the TLM method
,
2006
.
[5]
J. S. Sun,et al.
Volume and surface resistivity of low-density polyethylene filled with stainless steel fibres
,
1993
.
[6]
L. J. V. D. Pauw.
A METHOD OF MEASURING SPECIFIC RESISTIVITY AND HALL EFFECT OF DISCS OF ARBITRARY SHAPE
,
1991
.