Abstract:
In this paper, an attempt has been made to design a low-cost noncontact capacitancetype
level sensor for a conducting liquid. The sensor is in the form of a uniform
circular stainless steel cylinder of type IC-00179H-2005/I and BS4127-ALSI304, with
diameter of 15-25mm and 700mm length. The inner electrode is made of insulating
material of PTFE-insulated wire with diameter 0.52 - 3.0 mm. The minimum of measured
capacitance is 52.81 pF with sensitivity of 0.283 pF/mm by the maximum water level of
550mm.
