I have a Yokogawa AV8C Zirconia Oxygen Analyzer Averaging Converter with the ZR22G and 6 of the ZR22G sensing probes that are 6 1/2′ long. I would like to find someone who can provide me with the specification documents and/or user manuel for the AV8C. For more information about the AV8C go to http://bit.ly/AV8C-Averaging.