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CNG-92200H
Revised 08-00
00-02-0149
FWMurphy
Control Systems for
Alternative Fuel
Fueling Stations
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Continuing a Tradition All Murphy controls are WMurphy has been in the designed to live in the harsh Fbusiness of providing Our LEVELS I, II, and III control environment of motors, quality controls to the engine, systems have been engineered to engines and compressors. pump, and compressor market cover a wide variety of They’re tough for tough since 1939. Most of the controls requirements from simple applications. These systems are in use today were pioneered by start/stop operation of the desig
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Standard Control Systems for CNG Fueling Stations Designed for the small fueling facility...monitoring LEVEL I and controlling electric motor driven compressor. LEVEL I is an entry level controller system Features: designed for the small fueling facility requiring Automatic start and stop control only basic start and stop of the compressor Operating parameters field adjustable and monitoring basic shutdown functions. It without reprogramming monitors and controls the electric motor Includes h
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Suitable for larger stations with LEVEL II simplex or duplex compressor(s). LEVEL II is a mid-range system Features: designed for the larger stations Automatic start/stop control Operating parameters with more shutdown inputs for electric motor or engine field adjustable without being monitored than the LEVEL I driver(s) reprogramming control system. The LEVEL II Available for NEC Class I, Expandable to interface with system performs all the functions Division 1 or Division 2, multiple compres
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Monitor and control the entire fueling system including the Priority/Sequential valve operations. LEVEL III Communications modem on-board. LEVEL III is a comprehensive system Features: designed to monitor and control the PLC capabilities: Monitor 20 analog inputs entire fueling system. It is available 120 VAC control circuit for customer Reliable microprocessor based for both simplex or duplex electric supplied motor contactor control circuitry motor or engine driven systems. Available for ar
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Custom Valve Panels Priority/Sequential Valve Panels Murphy offers Priority/Sequential Valve Panels complete with Murphy Pressure Transmitters for use with the LEVEL III control system or the Murphy Stand- Alone Priority/Sequential Controller. These panels were designed to fail close valves for optimum operation. These panels can be provided on a plate or in a free standing NEMA 3 weatherproof enclosure. Valve Panel for 2 fast fill drops, 1 slow fill Valve Panel for 4 fast fill drops, 1 slow hea
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Layout of Typical CNG Fueling Station LEVEL I Compressor Driver or LEVEL II Slow Fill Control Header System PT Optional Bypass LEVEL III Valves (for fast fill) Priority Control Valves System H DOT PT Priority/ Priority/Sequential Cascade M Valve Panel* Sequential PT L Valve Storage Tanks PT Control Panel Sequential Valves (2-drop panel) PT PT † Dispenser * These items are not included in a LEVEL III control system. Order seperately. † For this standard conf
