Scully Signal Company

ST-35 Overfill Prevention Control Unit

Multiple-Point, Optic-Sensing Overfill Prevention Control Unit

• Interfaces with five-wire optic sensors
• Used, typically for bottom and top-loading of tank vehicles
• Mounted at the loading rack/gantry and connects to the vehicle via the Scully plug and cable assembly (sold separately).
• Features Dynacheck® circuitry for automatic and continuous self-checking of all system components
• For vehicle ground/earth verification options, consult Scully for information on the Groundhog Self-Proving Grounding System.