The IS220PRTDH1A is a Resistance Temperature Device Input Module from General Electric. This module is part of GE’s Mark VIe Speedtronic system, which was one of the final Speedtronic systems available. The Speedtronic line was created by GE in the 1960s for the management of industrial gas and steam turbines and included popular versions like the Mark I, Mark II, Mark IV, and Mark VI.
The IS220PRTDH1A is an I/O pack designed to work in conjunction with a terminal board. It is approved for use within hazardous locations when used with specific terminal boards like the IS200TRTDH2D, IS200SRTDH1A, or the IS200SRTDH2A. This unit has its own power supply.
Only resistive simple apparatus like RTDs should be connected to RTD inputs on the IS220PRTDH1A. Cabling used for these connections should have suitable insulation as specified in local electrical codes.
