A Leakwise system consists of a controller and one or more sensors. The ID-225 sensor has a high frequency transmitter mounted on a float that maintains its position precisely at the liquid/air interface, despite fluctuations in the liquid level. The loading on the special vertical antenna changes linearly with the oil layer buildup, enabling accurate oil thickness measurement. The antenna quickly recovers
The ID-225 requires a minimum water level of 30 cm (12.0 in) to operate, and can fluctuate with changing liquid levels up to 45 m (150 ft.). The sensor is controlled by the analog PS-220 Controller, which has two field-adjustable alarm points:
The Controller relays can initiate both local and remote alarms, as well as control. A 4-20mA output indicates the oil thickness. Continuous built-in diagnostics monitor sensor operation. A stilling well is recommended for all ID-225 installations.