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Re: Titania oxygen sensors Archived Message Posted by Dave Harney on August 11, 2008, 10:53 am, in reply to "Re: Titania oxygen sensors" This is taken from my ST05 02 sensor sim booklet. Titanium. "This type of sensor uses the properties of Titanium Dioxide (Ti02) which changes its electrical resistance in relation to the oxygen content of the exhaust system. Titanium sensors do not require an external oxygen reference level, therefore are immune to external factors, like air pollution or cantamination like water. Titanium sensors require external power, which is either 1 volt or 5 volts depending on the vehicle and manufacturer specification. These sensors are all heated type In order to work properly, the temperature of the sensor must be between 800 and 900 F (426 and 500 c) Output signal levels, these depend on the external voltage supply - for 1 volt systems the signal should switch from close to 0 volts (for lean) to near 1 volt (for rich), with the stoichiometric level at 0.5volt. For 5 volt systems, the output is generally reversed, near 0 volts for rich mixtures and 5 volts for lean mixtures, with 2.5 volts as the stoichiometric level. Response time - is the time it takes the sensor to change its output from below 0.20 volts to above 0.80 volts in response to a sudden change in the fuel mixture from lean to rich. The response time (as in Zirconia sensors) should be less than 100ms, and a longer transition time or small voltage swings are indicative of a defective sensor. So looks like the 1 v sensors behave like zirconia sensors and 5 volt ones are reversed. Regards Dave Message Thread: Titania oxygen sensors - Tony Sefton August 8, 2008, 8:49 am Re: Titania oxygen sensors - Mark Mcgrath August 8, 2008, 5:49 pm Re: Titania oxygen sensors - Tony Sefton August 8, 2008, 6:36 pm Re: Titania oxygen sensors - Mark Mcgrath August 9, 2008, 6:40 am Re: Titania oxygen sensors - Dave Harney August 9, 2008, 9:47 am Re: Titania oxygen sensors - Tony Sefton August 9, 2008, 7:26 pm Re: Titania oxygen sensors - Graham Bullock August 9, 2008, 8:01 pm Re: Titania oxygen sensors - Michael Whitworth August 9, 2008, 9:12 pm Re: Titania oxygen sensors - Graham Bullock August 9, 2008, 9:40 pm Re: Titania oxygen sensors - Tony Sefton August 10, 2008, 10:04 am Re: Titania oxygen sensors - lee mackintosh August 10, 2008, 7:06 pm Re: Titania oxygen sensors - Michael Whitworth August 10, 2008, 7:37 pm Re: Titania oxygen sensors - Michael Whitworth August 10, 2008, 7:58 pm Re: Titania oxygen sensors - lee mackintosh August 10, 2008, 10:42 pm Re: Titania oxygen sensors - Michael Whitworth August 11, 2008, 1:50 am Re: Titania oxygen sensors - Dave Harney August 11, 2008, 10:53 am Re: Titania oxygen sensors - Ed Kaps August 11, 2008, 6:31 pm Re: Titania oxygen sensors - Darren Bamford August 11, 2008, 9:27 pm Re: Titania oxygen sensors - Michael Whitworth August 12, 2008, 12:14 am Re: Titania oxygen sensors - Michael Whitworth August 12, 2008, 7:21 am Re: Titania oxygen sensors - Tony Sefton August 12, 2008, 8:50 am Re: Titania oxygen sensors - Dave Harney August 12, 2008, 1:46 pm Re: Titania oxygen sensors - Michael Whitworth August 13, 2008, 7:36 pm Re: Titania oxygen sensors - Tony Sefton August 13, 2008, 8:40 pm Re: Titania oxygen sensors - john weddup August 14, 2008, 7:40 pm Re: Titania oxygen sensors - Kevin Apps August 13, 2008, 11:49 pm Re: Titania oxygen sensors - Darren Bamford August 14, 2008, 9:48 pm

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