The stainless steel probe tube is a coaxial capacitive sensor.
The difference in dielectric constant between the liquid and gas enables the length of the probe beneath the liquid surface to be determined. The sensing circuitry is located in the probe head to avoid the effects of cable capacitance
Probe Diameter: 6.35mm
Active length: Specify length at time of order (min 0.5mtr max 1.44mtr)