Hi All, Current generation wide band oxygen sensors require complex driver circuits and have highly non-linear behaviour-ie you cant just measure voltage output like narrow band sensors.This is why both the meters and the sensors for WB measuring are generally exxy.
Dave Andrews and I recently bought one of the wideband AFR meter kits from TechEdge in WA: http://wbo2.com Theres heaps of info on wideband AFR measuring here. The kit was ~AU$170, and I already had a suitable Bosch LSU4 sensor. The kit also allows AFR, 3 voltage inputs, 3 temperature inputs and RPM to be data logged via onboard memory! It appears to work very well, is extremely rapid to respond, and very cheap for what it is. They also sell two suitable bosch wideband sensors, one for $150 and a VW one for $85. Apparently the VW can be got even cheaper from the US for about AU$50... If anyone in Melb wants to check it out let us know... Andrew > Sorry Geordie > I am not an electronics tech person and cant answer your question. I hope > someone can help you on this as I am interested also. > Quoting [EMAIL PROTECTED]: > > > Hmmmmmm. Interesting. Any idea what voltages it operates at??? > > > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] Behalf Of rclough > > Sent: Friday, 6 August 2004 7:45 AM > > To: [EMAIL PROTECTED] > > Subject: Re: Cheap Air/Fuel ratio meter and sensor for L-series > > > > > > A wide band sensor is what is fitted to the twin cam Hyundai Excell. > > ----- Original Message ----- > > From: [EMAIL PROTECTED] > > To: [EMAIL PROTECTED] > > Sent: Friday, August 06, 2004 6:55 AM > > Subject: RE: Cheap Air/Fuel ratio meter and sensor for L-series > > > > > > I built the $20 kit and it's pretty crappy. Not only could it sense the > > o2 reading, It seemed to also be able to sense when my hand was near the > > circuit board, or the wire running to the o2 sensor..... > > Use it as a guide only!!!! > > > > All these o2 meters do is measure the voltage produced by the sensor, > > the sensor has a platinum rod inside which produces a voltage when hot and > > will give off between 0 and 1 volt depending on how much oxygen is present. > > Ideal o2 conditions are around 0.7 volts. They can only detect a very narrow > > range, like 11:1 thru to 15:1 or something. A typical car unit is around $80 > > to $150 brand new. > > > > If you want accurate results, you need a wide-band o2 sensor like they > > use on the real o2 tuning meters, the wide-band sensor can detect a larger > > range of readings and is far more accurate. These cost a hell of a lot more > > than the narrow band type. Don't quote me but I think they are $400 to $700 > > just for the sensor. > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] Behalf Of mark krawczuk > > Sent: Friday, 6 August 2004 12:21 AM > > To: [EMAIL PROTECTED] > > Subject: Re: Cheap Air/Fuel ratio meter and sensor for L-series > > > > > > hi, might pay to get a 3 wire ego sensor from a ea falcon , the > > heating element will make the actaul sensor. start reading better,sooner, > > than waiting for the exh to bring it up to operating specs. > > the a/f meter from jaycar cost about 70 $?? > > there is another kit from jaycar for about $20 or soo, which just has > > a row of leds... > > > > btw has any body looked at the latest jaycar catalog ? > > look at catalog numbers: > > bs-5080 > > kc-5382 > > kc-5380 > > kc-5385 > > kc-5387 > > kc-5386 > > kc-5384 > > kc-5375 > > they are a heap o f electronic kits for efi cars.... > > thing is , i actually ordered the book, but they said the book wont be > > ready till september (even though its advertsied in this year s catalog. > > theres some really interesting kits, boost controller etc... > > mark k > > > > ----- Original Message ----- > > From: rclough > > To: [EMAIL PROTECTED] > > Sent: Thursday, August 05, 2004 8:43 PM > > Subject: Re: Cheap Air/Fuel ratio meter and sensor for L-series > > > > > > Good idea! I've had similar thought for the same reason(s). > > > > Keep us informed how you go building and installing it, and how it > > works if you succeed. > > > > I have read that the o2 sensor in the Hyundai Excell with the twin > > cam head is a high quality unit for sensing. Could be a good deal from a > > wrecker. > > > > Others may add their knowledge on this. > > > > > > ----- Original Message ----- > > From: Rob P > > To: [EMAIL PROTECTED] > > Sent: Thursday, August 05, 2004 7:02 PM > > Subject: Cheap Air/Fuel ratio meter and sensor for L-series > > > > > > Hi all, > > I want to set up my L4 powered 1600 with a cheap O2 sensor and A/F > > ratio meter. > > Is there anything I need to know? I see heaps of cheap O2 sensors > > on Ebay, brand new starting at around AUS$30-$40. There is a Bosch #11051 > > (OE type before catalyst single wire) O2 sensor listed as suitable for an > > L-series 4-cylinder. Are these any good? I'm just running twin SU's on one c > > ar with an L18 and twin Weber 45's on another with a L20B and want to swap > > between them for tuning. I thought I'd just get a Jaycar LED A/F meter kit > > and DIY it. > > I should be able to put the whole thing together for less than > > $150 I reckon. > > Any thoughts? > > > > Cheers, > > Rob P > > > > --membersozdat---------------------------------------------------- > > --- > > OZDAT Mailing List Please Note:- > > Send (un)subscribe requests to [EMAIL PROTECTED] > > Send submissions to [EMAIL PROTECTED] > > No unauthorised redistribution of this email > > http://www.ozdat.com/ozdatonline/index.htm > > http://www.ozdat.com/ozdatonline/listindex.html > > http://www.mail-archive.com/[EMAIL PROTECTED]/ > > ------------------------------------------------------------------ > > --- > > > > --membersozdat------------------------------------------------------ > > - > > OZDAT Mailing List Please Note:- > > Send (un)subscribe requests to [EMAIL PROTECTED] > > Send submissions to [EMAIL PROTECTED] > > No unauthorised redistribution of this email > > http://www.ozdat.com/ozdatonline/index.htm > > http://www.ozdat.com/ozdatonline/listindex.html > > http://www.mail-archive.com/[EMAIL PROTECTED]/ > > -------------------------------------------------------------------- > > - > > > > --membersozdat------------------------------------------------------- > > OZDAT Mailing List Please Note:- > > Send (un)subscribe requests to [EMAIL PROTECTED] > > Send submissions to [EMAIL PROTECTED] > > No unauthorised redistribution of this email > > http://www.ozdat.com/ozdatonline/index.htm > > http://www.ozdat.com/ozdatonline/listindex.html > > http://www.mail-archive.com/[EMAIL PROTECTED]/ > > --------------------------------------------------------------------- > > > > --membersozdat------------------------------------------------------- > > OZDAT Mailing List Please Note:- > > Send (un)subscribe requests to [EMAIL PROTECTED] > > Send submissions to [EMAIL PROTECTED] > > No unauthorised redistribution of this email > > http://www.ozdat.com/ozdatonline/index.htm > > http://www.ozdat.com/ozdatonline/listindex.html > > http://www.mail-archive.com/[EMAIL PROTECTED]/ > > --------------------------------------------------------------------- > > > > --membersozdat------------------------------------------------------- > > OZDAT Mailing List Please Note:- > > Send (un)subscribe requests to [EMAIL PROTECTED] > > Send submissions to [EMAIL PROTECTED] > > No unauthorised redistribution of this email > > http://www.ozdat.com/ozdatonline/index.htm > > http://www.ozdat.com/ozdatonline/listindex.html > > http://www.mail-archive.com/[EMAIL PROTECTED]/ > > --------------------------------------------------------------------- > > > > > > > > ------------------------------------------------------------ > This email was sent from Netspace Webmail: http://www.netspace.net.au > > > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[EMAIL PROTECTED]/ ---------------------------------------------------------------------
