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DESCRIPTION:
SM-AFR accurately measures the precise
air/fuel ratio (AFR) of any internal combustion engine. Up to 32 SM-AFR
modules can be daisy chained together in the iMFD system. SM-AFR can also be
used as a stand alone unit capable of interfacing with 3rd party hardware.
All Sensor Modules are housed in high quality extruded aluminum designed to
operate even in the most extreme conditions. In addition, all SM modules
offer outstanding digital accuracy, response and resolution which far exceeds that
of a standard gauge.
CONNECTION DIAGRAM:
 
- Connects to 12V-18V power source.
- Analog outputs (0-5V linear wideband output, 0-1V narrowband output,
ground)
- Termination jumper. Closed for first SM in daisy chain.
- Connects to next SM in daisy chain or to first DM
- Connects to previous SM or unconnected if first SM in daisy chain
- Connects to O2 Sensor Harness then to Bosch sensor.
USES:
TECHNOLOGY:
SM-AFR utilizes the
latest digital PID and DSP technologies to maximize o2 sensor reaction time
and accuracy without compromising overshoot, and slow settling response
time. This technology is coupled with advanced self sensor calibration
circuitry and sensor soft start to both prolong the life of your oxygen
sensor as well as eliminating any user intervention for manual sensor
calibration. PLX widebands may be used and installed in your vehicle
permanently.
NO SENSOR CALIBRATION IS REQUIRED! SIMPLY PLUG AND PLAY.
Technical Article: PLX Critical Response Technology
ANALOG OUTPUTS:
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Wideband 0-5V analog linear output
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Narrowband 0-1V analog output Replace your stock
narrowband sensor
 
(Click to enlarge)
INCLUDED ITEMS:
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SM-AFR main unit
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Bosch LSU 4.2 wideband sensor
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O2 sensor harness 10ft
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4ft power wire with 2.1mm connector
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4ft Analog wires and connector with 4 terminals
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1ft Serial Cable
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Termination jumper
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Quick start guide
RECOMMENDED ACCESSORY:
The DM-5 AFR is an optional standard 52mm gauge designed to display the
measured value from the SM-AFR module. More info
SPECIFICATIONS:
| Physical Dimensions |
2" x 2.875" x 1.125" (52mm x 75mm x 28mm) L
x W x H |
| Technology |
PLX Critical Response Technology, Fast
Response PID |
| Accuracy |
< 0.1AFR (Gasoline) Wideband, < 0.2AFR
(Gasoline) Narrowband |
| Measurement Range |
10-20AFR, 0.68 lambda - 1.36 lambda |
| Analog Outputs |
Wideband Linear 0-5V, Narrowband 0-1V
(Driving Current 20mA) |
| Operating Voltage |
8V-18V |
| Power Consumption |
30 Watts (Max), 18 Watts (Typical) |
| Power Supply Technology |
High Efficiency Switching |
| Operating Temperature |
0 - 85 Deg C |
| Sensor |
One Bosch LSU 4.2 |
| Enclosure |
Extruded Aluminum |
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