Standard narrow band type Oxygen Sensors operate between 0 and 1 volts, and are only capable of accurately measuring a stoichiometric air/fuel ratio (e.g. 14.7:1). A richer or leaner condition results in an abrupt voltage change and is only useful for qualitative determination. Modern automobiles natural gas engines use "switch" like sensing at idle and part throttle to make small compensations in fuel delivery to keep the air/fuel ratio near 14.7:1. Common rich burn sensors for stationary natural gas engines include 12028, 15718, and 15703.

Part #12028

Back to top

Part #15718

Back to top

Part #15703

Back to top