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WMurphy has been in the

business of providing

quality controls to the engine,
pump, and compressor market
since 1939. Most of the controls
in use today were pioneered by
Murphy to meet the needs
expressed by OEM’s, packagers
and users. As we move into a
renewed era of environmentally
clean burning Alternative Fuels,

with Compressed Natural Gas
(CNG) leading the way, Murphy
again is out in front with new
control systems. This fast growing
market requires combining the
best of our proven controls with
the innovative  SELECTRONIC

®

Micro-Controller™ units. Murphy
engineers are able to provide well
designed systems to meet your
exacting needs. 

Our LEVELS I, II, and III control
systems have been engineered to
cover a wide variety of
requirements from simple
start/stop operation of the
compressor and driver to
complete station automation with
remote communication
capabilities. Should these standard
systems or options not cover your
system requirements, these
controllers have the capability to
be expanded or engineered to
meet your needs.
We understand your
requirements, we listen to your
concerns, and most importantly,
we respond. Murphy controls are
known and accepted world-wide,
and they are backed by our
limited 2 year warranty. 

All Murphy controls are
designed to live in the harsh
environment of motors,
engines and compressors.
They’re tough for tough
applications.

These systems are

designed and built in accordance
with NFPA 52 and NFPA 37 
guidelines to meet the area
classification requirements as
defined by the National 
Electric Code.
Whether you are upgrading
existing equipment or specifying a
new installation, give your
equipment the Murphy
Advantage. You will add value to
your equipment and gain
increased customer satisfaction.
Specify Murphy LEVEL I, II, or III
SELECTRONIC

®

control systems

for your Alternative Fuels Fueling
Station control requirements.

Continuing a Tradition

1

We understand your
requirements, we listen to
your concerns, and most
importantly, we respond.

NOTE:

The features shown for LEVELS I, II, and III are typical for intended applications. Exact configuration and availability of 

features may depend upon final system requirements.

Summary of Contents for CNG-92200H

Page 1: ...F W M u r p h y Control Systems for Alternative Fuel Fueling Stations CNG 92200H Revised 08 00 00 02 0149 ...

Page 2: ...pability to be expanded or engineered to meet your needs We understand your requirements we listen to your concerns and most importantly we respond Murphy controls are known and accepted world wide and they are backed by our limited 2 year warranty All Murphy controls are designed to live in the harsh environment of motors engines and compressors They re tough for tough applications These systems ...

Page 3: ...ates load unload devices Compatible with stand alone priority sequential controls see below NEMA 4 7 and 9 enclosure Standard Control Systems for CNG Fueling Stations LEVEL I 2 Designed for the small fueling facility monitoring and controlling electric motor driven compressor The Murphy SELECTRONIC Priority Sequential Controller will monitor the Cascade or other high pressure storage banks and con...

Page 4: ...a NEMA 3 weatherproof enclosure Features Automatic start stop control for electric motor or engine driver s Available for NEC Class I Division 1 or Division 2 Group D Reliable microprocessor based control circuitry Operates load unload devices SWICHGAGE instruments included in control panel Includes hourmeter Accepts discrete analog inputs Tachometer on engine drive units Operating parameters fiel...

Page 5: ...ivision 2 Group D and non hazardous locations Automatic start stop control for electric motors or engine drivers Monitor 40 optically isolated discrete inputs Provides 32 open collector outputs Operating parameters adjustable via three button operator key pad no programming needed Built in security to prevent unauthorized system parameter manipulation Operating parameters stored in EEPROM memory m...

Page 6: ...ing NEMA 3 weatherproof enclosure Murphy strives to offer the most effective and timely support in the industry Whether your needs are panel service re programming or complete system upgrades using dependable and proven Murphy equipment our qualified staff is eager to assist Priority Sequential Valve Panels 5 Valve Panel for 2 fast fill drops 1 slow fill header and 3 bank cascade storage Valve Pan...

Page 7: ...lve Control Panel LEVEL III Control System Storage Tanks DOT Cascade Dispenser Driver Slow Fill Header These items are not included in a LEVEL III control system Order seperately For this standard configuration the dispenser must provide a dry contact closure to initiate a fill and a 4 20 mA flow rate signal for each drop Optional Bypass Valves for fast fill H M L PT PT PT PT PT PT 6 ...

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