GE Speedtronic Mark VIe IS220PTCCH1B is a Thermocouple Input Module consisting of 12 combustion optimized inputs and 1 cold junction. Simplex, duplex and triple modular redundancy applications are all possible with the IS220PTCCH1B. This board can accommodate conventional thermocouples such as E, J, K, S, and T, as well as mV inputs ranging from -8 to 45 mV. The thermocouples E, J, K, S, and T can be grounded or ungrounded and can be placed up to 984 feet from the turbine I/O panel. The cable resistance must not exceed 450 ohms.
The IS220PTCCH1B can run a variety of self-diagnostics, including flash memory, RAM, processor board hardware, and Ethernet port self-tests. It also provides continual monitoring of its internal power supply to ensure that they are operating properly.