Charlie, I looked into adapting my EFISM to use a
wide band O2 sensor, I though it would be simple - just a different (more
linear) O2 sensor voltage output range - however, the problem is the control
circuit required to maintain the precise sensor temperature (needed for any
accuracy) is more complex than that required to simply read the sensor
signal. In fact, from what I have read if you do not control the
heater temperature precisely - not only does accuracy suffer but the life of the
sensor is also shortened. Bosch does have a control chip - but its almost
as large as my circuit board and not cheap.
There are a number of DIY wide band units that are
available. My favorite is located here:
Ed
Sent: Saturday, November 26, 2011 9:26 AM
Subject: [FlyRotary] wide-band o2 sensor DIY
project
You can find interesting stuff in the most unexpected
places....
-------- Original Message --------
I know nothing about these folks except what I just read on their web site.
They offer plans to build a wideband O2 sensor display thingee. Dunno tital cost
of project. This is a commercial sevice, they charge for the complete write-up.
Think they may offer ready-made PCBs for each project too, not sure.
http://www.siliconchip.com.au/cms/A_111598/article.html
Thanks,
Steve!
GeoB
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