ECM

Engine Control and Monitoring

AFRecorder Model 4800P


The AFRecorder Model 4800P combines dual channel, fast air-fuel ratio (AFR) measurements with extensive computational capabilities. The Model 4800P displays the AFRs of each channel, their simultaneous difference, their average, and each channel’s AFR deviation. The AFR deviation is the real-time variation of AFR and indicates engine roughness or misfire. Linearized programmable analog outputs and full analyzer control via RS-232 make for easy integration with data acquisition systems. Other features include: PC software, recording with built-in statistics, and programmable simulated exhaust gas oxygen (SEGO) outputs. The SEGO outputs can be used to make an engine controller run closed-loop at non-stoichiometric set points. This feature is useful for engine calibration or catalytic converter testing. The Model 4800P can be AC or DC powered and is packaged for
dynamometer or in-vehicle use.

Range: 6 to 150 AFR, 0.4 to 10 l, 0.1 to 2.5 f, 0 to 22% O2
Accuracy: +/-0.6% at stoichiometric, +/-0.9% elsewhere
Response Time: Less than 150ms
Calculation Time: 1 ms
Fuel Types Supported: Any fuel specified by H:C, O:C, and N:C ratios, and H2
Analog Outputs: 0 to 5 V, linearized, programmable
RS-232: Yes. Software included.
SEGO (Simulated Exhaust Gas Oxygen) Sensor Outputs: Yes. Dual programmable.
Recording: Yes
Statistics: Average, Maximum, Minimum, Standard Deviation
Power: 100 to 250 VAC or 11 to 16 VDC
Size: 10.2" x 4.6" x 13.3" (W x H x D)