This document is the user manual for Ballenger Motorsports AFR500. It mainly introduces how to use the product.
The Ballenger Motorsports AFR500 is a precision oxygen concentration measurement system utilizing wideband technology to sense air-fuel ratios in the range of 9.00:1 to 16.00:1. Unlike conventional sensors, it uses a pumping current controller to estimate the ratio rather than outputting a direct voltage signal. The kit includes the AFR500 controller, a Bosch LSU 4.2 or NTK wideband oxygen sensor, a wiring harness, and a tuning manual.
| Air-Fuel Ratio Range | 9.00:1 to 16.00:1 |
|---|---|
| Supply Voltage Range | 11v – 28v |
| Maximum Supply Voltage | 28V DC |
| Power Supply Current | 3A |
| Analog Output Range | 0v to 5v |
| Sensor Type | Wideband oxygen sensor |
The AFR500 is compatible with Gasoline, Alcohol (Methanol), Ethanol, Compressed Natural Gas (CNG), Liquefied Petroleum Gas (LPG), and Propane.
Connect the sensor in free air, power the unit, wait 5-15 minutes for saturation, and turn the calibration knob until the display reads CAL–.
The SEn 1 error code indicates a heater open circuit, a cracked sensing element, or that no sensor is connected.
No, the enclosure is not fully sealed, so the unit should not be exposed to open weather conditions or water.