Scully Five-Wire Optic Sensor Liquid Level Sensor for Tank Truck Overfill Prevention Featuring Dynacheck® – Automatic and Continuous Self-Checking Circuitry • Maximum safety with Dynacheck® – automatic and continuous self-checking circuitry when used with Scully loading rack controls and vehicle onboard monitors • Solid state construction employing state-of-the-art components and technology • Scully’s field proven electro optics technology • Wide temperature range • Employs shaft that is easy to cut when shorter length is needed • Adjustable sensing level • Instant permissive signal – no warm-up time required • Quick purging of liquid – instant re-permit as product level drops below the sensing point • Fully compatible with all Scully optic controllers • FM & CSA approvals for Class I, Division 1, Groups C & D hazardous locations • Meets requirements of API Recommended Practice RP-1004 Description Scully five-wire optic sensors are designed for liquid petroleum product overfill prevention and point level detection. They are designed to be used with Scully Intellitrol® , Biclops® and ST-35 series loading rack control monitors. There is no waiting for the control monitors’ permit light to go on because the sensor requires no warm up time. The sensors can also be used with Scully Intellicheck® or Scully ONBOARD monitors. Safety Features The five-wire optic sensor incorporates Scully’s unique and exclusive Dynacheck® circuitry when connected to Scully monitoring equipment. To ensure that the system will always detect an overfill condition, the controller uses pulsed signals which continuously check the entire system operation, including sensors, wiring, connectors and itself. If a sensor comes in contact with liquid, or in the unlikely event of a system fault, the pulsed signals cease and the controller automatically signals for immediate shutdown of the loading operation. No operator involvement is needed! Shutdown is accomplished by controlling pumps or valves. Scully Five-Wire Optic Sensors are part of an automatic and continuous self-checking system you can count on. Scully five-wire optic sensors offer all these advantages: Principle of Overfill Prevention Sensor Tanker Gantry Loading Hose from Pump Terminal Automation System Output Signal Loading Gantry Valve Emergency Shutdown System Components Socket & Plug Connection Control Monitor Sculcon® Cable Mains Power
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