Emissions Monitoring Interface BoardThe circuit board accepts and processes voltage inputs from four engine exhaust sensors…

  • Type J Thermocouple (Iron-Constantan)…Procedures an analog signal proportional to the catalytic converter inlet exhaust gas temperature.
  • Same as above for the converter outlet exhaust gas temperature.
  • Zirconium Oxygen Sensor…Produces an analog signal proportional, on a log scale, to the percent oxygen content in the exhaust gases at the inlet of the catalytic converter.
  • Pressure Transducer…Produces an analog signal proportional to converter pressure differential required for MACT application.