The DS3800NTBE1A1A is a GE printed circuit board, or PCB, manufactured for the Mark IV series. This series is designed for steam or gas turbine control management.
The DS3800NTBE1A1A is a thermocouple card. Thermocouple cards relay the measured temperature from the appliance to a controller for use in process control and high-temperature safety shutdown. The Mark IV series has been designed with several thermocouple cards that all report back their values to several sections. For example, the exhaust system is assessed by thirteen thermocouple cards that send information to three different subsections. Each of these sections then can make an assessment of whether to limit fuel for the turbine or to let it flow. Since a few degrees of deviation in even one card can cause a resulting bias in the entire system, it is important to the end user that all cards in the system remain in good working order, lest a resulting bias lead to a statistical loss of input. This bias and loss of input can possibly lead to engine and combustor problems.
The DS3800NTBE1A1A has been marked with 6BA01. It is built with two mating connectors to communicate with other PCBs, which are both along its top edge. These are vertical male 28-pin connectors. One is marked JA and the second is marked JB.
The DS3800NTBE1A1A is an uncrowded PCB. It has no diodes or resistors. It is, however, populated with forty-eight capacitors. The DS3800NTBE1A1A is drilled at the factory for mounting along its edge, and also several times in the center. These drill marks avoid the waffle pattern that has been imprinted onto the top layer of the PCB.
The DS3800NTBE1A1A has four thermocouple components located on the surface of the board. These have been labeled TBA/TBB/TBC/TBD.
Tech support for the DS3800NTBE1A1A, like other Mark IV components, was provided by General Electric. GE provided all publications, such as manuals and data sheets that referenced this part.