PT100 Head Mounted Transmitter – Wiring & Installation Guide PT100 transmitters are widely used in industrial automation to convert RTD temperature signals into a standard 4–20 mA output for reliable transmission to PLCs, DCS, and control systems. This infographic explains the basic 2-wire wiring schematic, terminal connections, calibration points, and installation method of a head-mounted PT100 transmitter. A must-know topic for Instrumentation Engineers, Technicians, and Automation Professionals. Save this post for future reference and share it with your colleagues. Post navigation PT100 Temperature Transmitter Understanding PD Control (Proportional-Derivative Control)