Precise Annealing Control for Retrofits & New Furnaces

Need to be CQI-9, NADCAP, NFPA or AMS compliant? The UPC-MARATHON control solution offers compact, fully automatic and cost-effective modules or combination of modules to meet industry standard requirements as well as provide precise and reliable process control for greater savings and improved product quality:

  • Process Atmosphere Analysis
  • Process Control
  • Process Atmosphere Contro
  • AccuCarb LTA
  • FurnaceDoctor FX
  • Flow Control


  • Full compliance with AMS 2750D, NFPA 86-C section 14-9, CQI-9, Nadcap
  • Cost-effective module configurations for new installations or retrofits
  • High accuracy and reliability
  • Fully automated operation
  • Interfaces with SCADA systems
  • Remote configuration possible
  • Full compliance with AMS 2750D, NFPA 86-C section 14-9, CQI-9, and Nadcap
  • Latest achievements in annealing process control

UPC-MARATHON control solutions are modular packages customized to significantly improve your nitriding and nitrocarburizing operations, meet industry standard requirements, and ultimately provide you with precise and reliable process control. We offer compact, fully automatic modules for new installations or retrofits. Each solution consists of a cost-effective module or combination of modules delivered with state-of-the-art equipment and backed by our extensive technological expertise.

Accurate, Continuous, Automatic Measurement

The process atmosphere module is based on the AccuCarb LTA or FurnaceDoctor FX. AccuCarb LTA is specially designed oxygen probe for use in annealing atmospheres; and the FurnaceDoctor FX stationary infrared analyzer is recommended for use with endothermic or exothermic gases. The FurnaceDoctor FX is a high accuracy system that measures CO, CO2, and hydrocarbons. If used in conjunction with UPC’s Protherm series of controllers, PF calculation is possible.


Accurate, Cost-Effective Atmosphere Measurement

The AccuCarb LTA is an oxygen sensor designed specifically for annealing atmospheres and temperatures. While the electrode designs of standard oxygen probes fall short due to the high impedance of the device at annealing temperatures, the unique electrode contact and solid electrolyte substrate of the AccuCarb LTA takes care of this problem. The sensor is also gas-tight for hydrogen applications to ensure safe operation.

  • High accuracy and reliability
  • Special low temperature electrode assembly
  • Gas tight design for safety in hydrogen-based atmospheres
  • Long sensor life


Multi Point Gas Analysis

FurnaceDoctor FX is suitable for installations using exothermic and endothermic gases. It provides complete 3-gas analysis (CO, CO2, CH4), and when used in conjunction with a Protherm instrument, provides the ability for PF control.

  • Accurate, affordable infrared measurement of CO, CO2, and CH4
  • Computation of % Carbon and expected oxygen probe millivolts
  • Single- or Multi-point measurements
  • Built-in Ethernet
  • Encrypted data – fully CQI 9 compliant



Precise Monitoring, Controlling & Recording

The process control module is based on Protherm 470, 510, 610 or 710 from simple annealing atmosphere control to full furnace automation for batch or continuous lines.


All UPC instrumentation includes local data logging and compliance to automotive or aerospace specifications.



  • Protherm 470, 510, 610 or 710 controller with standard configuration
  • External I/O’s (Protherm 510, 610, 710)
  • Internal I/O’s (Protherm 470)
  • Steel plate (mountable) or cabinet (enclosure)
  • Pre-wired with terminal blocks & isolation relays
  • Electrical drawings / user manual
  • Factory assembled and tested


  • Integrated web server (Protherm 510, 610, 710)
  • Integrated VNC remote connection (Protherm 470)
  • Modbus RTU
  • Ethernet LAN interface
  • Modbus / TCP interface
  • Optional Profibus
  • Seamless integration with SCADA systems


  • Precise atmosphere control – PF or reduction/oxidation potential (redox)
  • Alarm notification and processing
  • Multi-level password protected interface
  • Real time and historical paperless chart recorder displaying process variables
  • Recipes and recipe templates can be created and modified
  • Precise temperature control (cascade mode available)
  • Internal data storage
  • PDF reports (Protherm 510, 610, 710)
  • Data export in CSV format (Protherm 510, 610, 710)
  • Data export in HTML format (Protherm 470)


Efficiency with Automated Control


Main Components:

  • N2 emergency flow line
  • Purge flow monitoring device
  • Electronic flow control of combustible gases
  • Process gas lines are equipped with solenoid valves, manual valves, and Waukee Valve-Tronic Plus™ electronic flow meters
  • System is factory assembled, prewired, and tested
  • Optional Safeties:
  • Purge confirmation, safe admission temperatures, proof of flow, check valves, limiting orifice valves, and automatic purge







  • Accurate flow measurement and control
  • Large, bright flow display
  • Internal PID maintains constant flow to set point despite pressure variations
  • Set point from control instrument or flow meter keyboard
  • Built-in web server with historical alarm log
  • Modbus/TCP communications standard
  • High, Low, and deviation alarms
  • Flow totalization
  • Direct interface to Protherm
  • instrumentation or SCADA packages