[Retracted] Design and Implementation of SOC-Based Noncontact-Type Level Sensing for Conductive and Nonconductive Liquids

Table 1

Dielectric constants of insulation materials.

Material	Dielectric constant
Air	1.0
Formica	4.6–4.9
Glass (standard)	7.6–8.0
Glass (ceramic)	6.0
Pet film (mylar)	3.2
Polycarbonate (lexan)	2.9–3.0
Acrylic (plexiglass)	2.8
ABS	2.4–4.1
Wood table	1.2–2.5
Gypsum	2.5–6.0