The control unit can control up to 6 probes installed on 2 different separators (3 probes per vessel). It checks the status of connected probes every 30 minutes (adjustable frequency). The current status is displayed on the 2x16 LCD display on the front of the unit. The detection of hydrocarbons is done by conductivity, water behaves as a conductor while hydrocarbons behave as insulators. The probe consists of 2 stainless steel parts, when one of the two parts is immersed in hydrocarbons, a signal is sent to the control box that triggers the alarm.
The control unit detects the sensor's alarm condition and is available in two versions (standard beacon):
One signals alarms with a visual and audible signal.
The second transmits the sensor status via GSM (SMS on mobile phone).
A central alarm signal, modem, or any external alarm device can also be connected to the relay.