Answers to questions about our heat treating products, oxygen & carbon sensors, temperature control devices, and probe instruments for any company in the heat treating industry.  How do I use Temperature / Carbon Deviation Alarms in a recipe? How do I send a set point change to a slave instrument using a recipe on a Dualpro or Multipro? What happens when I run a probe care sequence? How do I verify that my instrument is OPC upgradeable? What is the calibration procedure for the Multipro? How do Limit and Alarm Statements work in Version 3.5 Recipes? How do I upgrade the firmware on a Dualpro / Multipro CPU board? How do I program the Dualpro Analog Inputs? How do I setup the Dualpro to measure percent oxygen? What is the Dualpro Calibration Procedure? How do I determine dew point from my probe temperature and millivolt output? How do I use the instrument clock and counters in a recipe? How do I write a recipe for a Marathon Sensors instrument? How do I troubleshoot a carbon probe? How can I determine carbon from my probe temperature and millivolt output? How do I calibrate the probe mV input on an AACC 2000 series instrument?