MTC-20/2S User Manual_______________________________________________________________________________________________________________4. GroundingTo avoid ground loops, the internal ground of the system is floating, i.e. it is not connected tothe protective earth of the mains while the cabinet is always connected to protective earth(green / yellow wire). The system can be grounded either via a BNC cable connected toINPUT or OUTPUT (10 mV / °C) or via the blue OUTPUT (= GND) connector.5. Connection of the Sensor / DIN ConnectorFigure 2: How to connect the temperature sensor (non DIN cable)Figure 3: Connector pinout of the DIN connector (pins 1 and 3 are connected internally)___________________________________________________________________________version 2.7 page 11