MurCal, Inc.

MurCal, Inc.

Model AFR-FI - Air/Fuel Ratio Controller for Lean-Burn, Fuel Injected Engines

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Compliance Controls' AFR-FI air/fuel ratio controller is your best value for fuel injected, lean-burn natural gas engines. What do you get with the microprocessor-based AFR-FI?

Fuel Efficiency:

No more traditional pneumatics. The AFR-FI is a 'smart system' that automatically optimizes the lean-burn air-fuel mix to ensure top performance and fuel efficiency.

Lower Maintenance:

The AFR-FI delivers optimized engine operation and stays alert with 26 alarms and shutdowns - covering fuel flow and fuel pressure, intake manifold temperature, exhaust temperature and air manifold pressure. Other AFR's for lean-burn, fuel-injected engines deliver a whole lot less. But the AFR-FI, with easy installation, automatic operation and state-of-the-art technology, is simply the best value you can find.

Automated Compliance:

The AFR-FI maintains tight control of the lean-burn air-fuel mix with computer speed and precision.

• Improved engine performance and efficiency
• Automated emissions compliance
• User-friendly display and keypad interface
• Price-competitive
• High-speed MODBUS communications

• Compliance assured
• Eliminates time consuming, unreliable pneumatic air-fuel control
• Better engine performance
• Less maintenance - lower maintenance costs
• Improved troubleshooting
• Better fuel economy
• Easy installation and setup
• Fully automatic
• Easy integration with other control systems and data collection / analysis systems
• Supports high-speed communications

• D100 MHz, 586-compatible microprocessor: 8 MB of RAM.
• User-programmable: Windows-based ladder-logic software (IEC-61131-3 std. programming languages).
• Daylight-filtered vacuum fluorescent display (4 lines with 20 characters each line).
• 16-Key pad: for set-point entry, alarm acknowledgement, start, stop, reset, etc.
• Wall / bracket mount enclosure or free standing:
  - Window in door
  - Internal swing panel
  - DIN rail-mounted terminal blocks
  - Panduit Wireway
  - Ample room for customer connection
• Canadian standard for separation of incendive and non-incendive wiring.
• Four (4) RS485 serial ports.
• Digital I/O module - reads up to 18 thermocouples or mA sources.
• Ten (10) sets of data points (air/fuel map).
• Fuel flow totalization (optional).
• Hour meter.
• Shutdown or fault snapshot - provides a complete picture of system conditions at shutdown.
• Four (4) discrete inputs - normally closed.
• Two (2) discrete relay outputs.
• Shutdowns:
  - GOV-10 shutdown (optional)
  - Low / high fuel flow
  - Low / high fuel pressure
  - Low / high air pressure
  - Air manifold pressure xmitter fail
  - Fuel pressure / flow xmitter fail
  - Air manifold temperature xmitter fail
  - TC break
  - Air manifold temperature
  - Overspeed
• Twelve (12) alarms.
• Accomodates a wide range of engine configurations:
  - V-type engines, in-line
  - Waste gate or air damper
  - Other special configurations
• Operating temperature: -40 to +85°C (-40 to 185°F).
• Controller approved for CI. 1, Div. 2, Grps. C & D Areas.

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