Motec AFM1 User Manual download pdf (Page 8)

4 Meter Operation

The Sensor has an internal heater to heat the sensor quickly and ensure

adequate temperature when exhaust gases are relatively cold (i.e. when the

engine is under light load).

When the internal heater is used the sensor will normally give good readings

within 2 minutes of applying power.

Power Supply

The Power supply must provide current for both the Meter and the Sensor

Heater Element. The vehicle battery is usually the most convenient source of

power.

Connections

The lead supplied with the Meter should be connected between the Meter and

the Sensor.

Power should be applied to the cable by connecting the Red Wire to Battery

Positive and the Black wire to Battery Negative. This connection powers both

the Meter and the Sensor Heater Element.

The Sensor has two connectors one is for the Sensor Element and the other

for the Heater Element. If the exhaust temperature will exceed 800 deg C the

Heater Element should NOT be connected.

Note If the Heater Element is not connected the sensor warm up time will be

increased and the Sensor may not read correctly if the exhaust gasses

are too cold - see specifications.

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Black Battery Negative

MoTeC

Air Fuel Ratio Meter

Refer to Appendix B if full wiring details are required.

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Motec AFM1 User Manual Page 8