Marathon Monitors Inc.
Description and Applications
The Marathon Monitors Inc. UNIPRO Controller/Programmer represents the latest technology in microprocessor-based process control instrumentation. Through flexible PID (Proportional, Integral, Digital) control along with programmable features, even the most complex, system can be handled. For a thorough explanation of PID please refer to Zeigler and Nichols; “Optimum Settings for Automatic Controllers”, Transactions of ASME, Nov. 1942. Or St. Clair, David W.; Controller Tuning and Control Loop Performance, a Primer; Straight-Line Control Company, Newark ,Delaware 1989.
The UNIPRO's control actions are based upon input from a Thermocouple, RTD, Voltage or Current source. The UNIPRO allows Manual, Automatic, or Programmed control of a single loop. Its built-in RS-422 computer interface allows it to be completely supervised by a computer, either on-site or in some remote location within the plant. The Programmer can be used, and is strongly recommended, to allow complete control of temperature or other process cycles.
The following features have been included to allow use of the instrument in a wide variety of applications:
Fully site-configurable for single point control from one of three
(3)fully isolated analog input sources, each separately configurable for thermocouple, RTD, voltage, or current.
Powerful process/logic programmer that can store up to two-hundred (200) programs, each consisting of nineteen (19) steps, subroutine calls, test and branch capability, and full access to all instrument parameters.
