Saab Rosemount Tank Radar Star. Supply and Communication Tank Interface (SCT) SCT 5110,
Part # 9240 021-202
The Supply and Communication Tank interface (SCT) is the intrinsically safe interface between units in the hazardous area and the non hazardous area. It is placed in the cabinet for the Supply and Communication Unit (SCU). The units in the hazardous area are connected to the Supply and Communication Safety Barrier boards (SCS) in the SCT. The SCS boards use three separate shunt diode barriers for voltage and current limiting.
Drawing # 9420021-932 Safety Barrier Electronic Card, safety barrier which is installed on SCT ( SUPPLY AND COMMUNICATION TANK INTERFACE) and connected to TGU 5110. Part # SCS SS5110SP.
The signals from the Tank Gauge Unit (TGU) enter the Supply and Communication Unit (SCU) through the tank interface (SCT). The signal passes the safety barrier (SCS) and enter the Supply and Communication Computer (SCC) via the modem (SCM). In the SCC the signals are processed and sent to the Host via an RS-485 serial communications port.